List of old-growth forests#Canada

! Country

! Area

! Old-growth extent

! WWF ecoregion

! Old-growth forest type

|Salonga National Park

|

|Central Congolian lowland forests

|

|Réserve biologique intégrale du Bois des Nèfles

|{{convert|sortable=on|179|ha}}

|Tropical and subtropical dry broadleaf forests

|

|Réserve biologique intégrale du Piton de la Fournaise

|{{convert|sortable=on|21,005|ha}}

|Tropical and subtropical moist broadleaf forests

|

|Réserve biologique intégrale du Mazerin

|{{convert|sortable=on|2,491|ha}}

|Tropical and subtropical dry broadleaf forests

|Pandanus scrub

|Kakamega Forest{{citation needed|date=July 2012}}

|

|

|

! Country

! Area

! Old-growth extent

! WWF ecoregion

! Old-growth forest type

|Sundarbans

|

|Sundarbans

|Mangrove forest

|Prey Lang

|

|Tropical and subtropical dry broadleaf forests

|

|Kintrishi Protected Landscape

|

|Euxine-Colchic deciduous forests

|temperate broadleaf rainforest

|Lagodekhi Protected Areas

|

|Caucasus mixed forests

|temperate broadleaf forest

|Mtirala National Park

|

|Euxine-Colchic deciduous forests

|temperate broadleaf rainforest

|Dudhatoli Mountains, Uttarakhand

|{{convert|sortable=on|6000|ha}}

|Western Himalayan broadleaf forests and subalpine conifer forests

|temperate broadleaf mixed forests and montane forests biome

|Leuser Ecosystem

|

|Sumatran montane rain forests

Sumatran lowland rain forests

|tropical rainforest

tropical montane forest

|Lorentz National Park

|

|New Guinea mangroves
Southern New Guinea lowland forests
New Guinea montane forests

|

|Mamberamo Foja Wildlife Reserve

|

|Northern New Guinea lowland rain and freshwater swamp forests

Northern New Guinea montane rain forests

|

|Coast along the Caspian Sea and the northern slopes of the Alborz mountains

|

|Caspian Hyrcanian mixed forest{{cite web|url = https://whc.unesco.org/en/tentativelists/5214/|title = Hyrcanian Forest (Caspian Forest)|access-date = 2019-12-26|archive-date = 2019-07-07|archive-url = https://web.archive.org/web/20190707200207/http://whc.unesco.org/en/tentativelists/5214|url-status = live}}

|temperate broadleaf and mixed forests biome

|Shiretoko National Park

|

|Hokkaido deciduous forests, Hokkaido montane conifer forests{{citation needed|date=March 2013}}

|temperate and subalpine mixed forest

|Yakushima Wilderness Area

|

|Nansei Islands subtropical evergreen forests, Taiheiyo evergreen forests

|subtropical and temperate rainforest

|Kasugayama Primeval Forest

|

|Taiheiyo evergreen forests

|

|Belum-Temengor{{Cite web |last=Ding |first=Emily |date=2019-03-06 |title=In Malaysia, one of the world's oldest rainforests awaits |url=https://www.cnn.com/travel/article/belum-rainforest-malaysia/index.html |access-date=2024-06-18 |website=CNN |language=en}}

|

|Peninsular Malaysian rain forests

|

|Danum Valley

|

|Borneo lowland rain forests

|

|Taman Negara

|

|Peninsular Malaysian rain forests

|

|Ulu Muda Forest

|

|Peninsular Malaysian rain forests

|

|Central Sikhote-Alin

|

|Ussuri broadleaf and mixed forests

|

|Virgin Komi Forests

|

|Urals montane tundra and taiga

|Coniferous

|Western Caucasus

|

|Caucasus mixed forests

|

|Yushan National Park

|

|Taiwan subtropical evergreen forests

|Taiwania

! Country

! Area

! Old-growth extent

! WWF ecoregion

! class="unsortable"| Old-growth forest type

|Walpole Wilderness Area, Western Australia

|

|Jarrah-Karri forest and shrublands

|Karri, Jarrah, Eucalyptus jacksonii, Eucalyptus guilfoylei

|Barrington Tops National Park, New South Wales

|

|Eastern Australian temperate forests

|subtropical and temperate rainforest and eucalypt

|Greater Blue Mountains Area, New South Wales

|

|Eastern Australian temperate forests

|eucalypt forest

|Tarkine, Tasmania

|{{convert|2000|km2}}

|Tasmanian temperate rain forests

|Temperate rainforest

|Tasmanian Wilderness

|

|Tasmanian temperate rain forests

|temperate rainforest and eucalypt forest

|Goolengook, East Gippsland, Victoria

|Over {{convert|20|km2}}

|Eastern Australian temperate forests

|rare warm temperate/cool temperate "Overlap Rainforest"

|Blue Tier, Tasmania

|{{convert|100|ha}}{{cite web|url=http://tasland.org.au/content/uploads/2016/03/Blue-Tier-reserve-report-2015.docx|title=Blue Tier Reserve Report 2015|year=2015|access-date=2016-05-21|archive-date=2016-03-21|archive-url=https://web.archive.org/web/20160321152800/http://tasland.org.au/content/uploads/2016/03/Blue-Tier-reserve-report-2015.docx|url-status=live}}

|Tasmanian temperate rain forests

|myrtle canopy, unusually diverse understorey for temperate rainforest (celery top pine, waratah, sassafras, tree fern), threatened Simson's Stag Beetle.

|Styx Forest, Tasmania

|

|Tasmanian temperate rain forests

|

|Weld, Tasmania

|

|Tasmanian temperate rain forests

|

|Upper Florentine Valley, Tasmania

|

|Tasmanian temperate rain forests

|

|Badja State Forest, New South Wales{{cite web|url=https://www.wilderness.org.au/articles/nsw-south-coast-forests-revised-list-icon-areas-under-threat|title=NSW South Coast Forests - Revised List of Icon Areas under Threat|publisher=Wilderness Society|year=2015|access-date=2016-05-21|archive-date=2016-04-07|archive-url=https://web.archive.org/web/20160407210301/https://www.wilderness.org.au/articles/nsw-south-coast-forests-revised-list-icon-areas-under-threat|url-status=live}}

|

|Eastern Australian temperate forests

|Wet old-growth with sweeping tree-fern understoreys. 10+ threatened species (including squirrel glider and golden-tipped bat)

|Dampier State Forest, New South Wales

|

|Eastern Australian temperate forests

|Wet old-growth. Most extensive rainforests in the South Coast.

|Wandella / Peak Alone, New South Wales

|

|Eastern Australian temperate forests

|High old-growth and threatened species values. Important catchment value.

|Monga State Forest / Buckenbowra, New South Wales

|

|Eastern Australian temperate forests

|Pristine Buckenbowra River, including an area on the northern side of the river with a golden-tipped bat record. Also an area around McGregors Creek, nominated for wilderness, and important for old-growth and to increase the viability of the connection / link between Buckenbowra and Deua National Park.

|Dampier, New South Wales

|

|Eastern Australian temperate forests

|Upper Deua River (Identified Wilderness) and Big Belimba Creek catchment and contains extensive old-growth forests. Big Belimba Creek contains giant wet old-growth forest and extensive tree-fern forests.

|Tallaganda State Forest, New South Wales

|

|Eastern Australian temperate forests

|Tall wet old-growth forest.

|Gondwana Rainforests of Australia

|50 separate reserves totaling {{convert|366500|ha}}

|Subtropical rainforest

|The most extensive area of subtropical rainforest in the world. Extremely high conservation value; over 200 rare or threatened plant and animal species.

! Country

! Area

! Old-growth extent

! WWF ecoregion

! class="unsortable"| Old-growth forest type

|Kalkalpen National Park

|UNESCO World Heritage protected beech forests: 5,262 hectares; primary forest remains: 400 hectares

|

|Temperate broadleaf and mixed forests biome

|[https://www.wildnisgebiet.at Wildnisgebiet Dürrenstein] (incl. primary forest Rothwald)

|Total: 7,000 hectares; UNESCO World Heritage protected beech forests: 3,685.27 hectares; Rothwald: 420 hectares

|

|Temperate broadleaf and mixed forests biome

|Lankaran lowland and Talysh mountains

|

|Caspian Hyrcanian mixed forest

|temperate broadleaf and mixed forests biome

|Białowieża Forest

|{{convert|sortable=on|308,580|ha}}

|Central European mixed forests{{citation needed|date=March 2013}}

|

|Perućica

|{{convert|sortable=on|1,434|ha}}

|Dinaric Mountains mixed forests

|

|Ravna Vala

|{{convert|sortable=on|45.04|ha}}

|Dinaric Mountains mixed forests

|

|Ancient and Primeval Beech Forests of Europe in the Central Balkan National Park

|{{convert|sortable=on|10,988,91|ha}}

|Rodope montane mixed forests

|Temperate broadleaf and mixed forests biome

|Boubin Primeval Forest

|{{convert|sortable=on|685.9|ha}};

core zone (primary forest): 46 hectares

|Järvselja Nature Reserve

|{{convert|sortable=on|184|ha}}

|Scandinavian and Russian taiga

|Variety of succession stages between carrs and Scots pine dominated taiga

|Pyhä-Häkki National Park

|

|Scandinavian and Russian taiga

|Scots pine and Norway spruce

|Réserve Biologique Intégrale d'Assan

|{{convert|sortable=on|1,032|ha}}

|Temperate coniferous forest

|Pinus sylvestris, Abies alba, Larix decidua, Juniperus thurifera and Pinus uncinata

|Réserve Biologique Intégrale de Chaux

|{{convert|sortable=on|148|ha}}

|Temperate broadleaf and mixed forest

|Abies alba, Picea abies and Fagus sylvatica

|Réserve Biologique Intégrale de la Glacière

|{{convert|sortable=on|28|ha}}

|Temperate broadleaf and mixed forest

|Abies alba, Picea abies and Fagus sylvatica

|Réserve Biologique Intégrale de la Sainte-Baume

|{{convert|sortable=on|138|ha}}

|Temperate broadleaf and mixed forest

|Fagus sylvatica, Quercus pubescens, Taxus baccata, Ilex aquifolium, Tilia cordata, maple and Quercus ilex

|Réserve Biologique Intégrale de la Sylve d’Argenson

|{{convert|sortable=on|2,579 |ha}}

|Temperate broadleaf and mixed forest

|Fagus sylvatica, Quercus petraea and Quercus robur

|Réserve Biologique Intégrale de Saint-Pé-de-Bigorre

|{{convert|sortable=on|1,010|ha}}

|Temperate broadleaf and mixed forest

|Fagus sylvatica, Tilia cordata and Maple

|Réserve Biologique Intégrale des Maures

|{{convert|sortable=on|2,531|ha}}

|Mediterranean forests, woodlands, and scrub

|Quercus ilex, Quercus suber, Castanea sativa and Pinus pinaster

|Réserve Biologique Intégrale du Mont Ventoux

|{{convert|sortable=on|906|ha}}

|Temperate broadleaf and mixed forest

|Pinus uncinata, Pinus nigra, Pinus sylvestris, Fagus sylvatica and Abies alba

|Réserve Biologique Intégrale du Défilé de Straiture

|{{convert|sortable=on|124|ha}}

|Temperate broadleaf and mixed forest

|Abies alba, Picea abies and Fagus sylvatica

|Réserve Biologique Intégrale d'Oléron - Saint-Trojan

|{{convert|sortable=on|158|ha}}

|Temperate broadleaf and mixed forest

|Quercus ilex, Quercus petraea and Pinus pinaster

|Réserve Biologique Intégrale du Bois du Ruère

|{{convert|sortable=on|64|ha}}

|Temperate broadleaf and mixed forest

|Fagus sylvatica, Quercus robur, Carpinus betulus, Tilia cordata and Maple

|Réserve Biologique Intégrale du Vercors

|{{convert|sortable=on|2,160|ha}}

|Temperate broadleaf and mixed forest

|Abies alba, Picea abies and Fagus sylvatica

|Klepina Duliba Old Growth forest

|{{convert|sortable=on|118|ha}}

|Temperate broadleaf and mixed forest

|Abies alba,Picea abies and Fagus sylvatica

|Valle Cervara

|{{convert|sortable=on|50|ha}}

|Oldest beech forest in Europe{{cite journal|title = La hêtraie pluri-séculaire de la vallée Cervara (Parc national des Abruzzes, Italie)|date = 2005 |journal = Acta Botanica Gallica|doi = 10.1080/12538078.2005.10515511 |s2cid = 85386812 |last1 = Schirone |first1 = Bartolomeo |last2 = Pedrotti |first2 = Franco |last3 = Spada |first3 = Francesco |last4 = Bernabei |first4 = Mauro |last5 = Di Filippo |first5 = Alfredo |last6 = Piovesan |first6 = Gianluca |volume = 152 |issue = 4 |pages = 519–528 |bibcode = 2005AdBG..152..519S |doi-access = free }}

|temperate broadleaf and mixed forests biome. Fagus sylvatica Taxus. /lex, several Betulaceae (Carpinus spp., Ostrya. Corylus, Alnus cordata in some areas, Betula), Ulmus spp. (surtout U glabra), Fraxinus ornus (more rarely F excelsior) and Acer (A. opalus s.l., A. pseudoplatanus, A. platanoides, A. /obelii)

|Biogradska Gora

|

|Dinaric Mountains mixed forests

|temperate broadleaf and mixed forest

|Crna Poda

|

|Dinaric Mountains mixed forests

|Coniferous

|Trillemarka

|

|Scandinavian and Russian taiga

|

|Stabbursdalen National Park

|

|Scandinavian and Russian taiga

|

|Øvre Dividal National Park

|

|Scandinavian and Russian taiga, Scandinavian montane birch forest and grasslands

|

|Retezat National Park

|

|Carpathian montane conifer forests

|

|Vinatovača

|{{convert|sortable=on|37|ha}}

|Temperate broadleaf and mixed forest

|Fagus sylvatica

|Stužica

|{{convert|sortable=on|761.5|ha}}

|Pannonian mixed forests

|European Beech

|Carpathian Biosphere Reserve

|{{convert|57880|ha}}

|Ancient and Primeval Beech Forests of the Carpathians and Other Regions of Europe

|

|Forest of Dean

|

|

|mixed woodland

|Puzzlewood

|

|

|

! Province

! Area

! Old-growth extent

! WWF ecoregion

! class="unsortable"| Old-growth forest type

|Carmanah Walbran Provincial Park

|{{convert|164|km2|acre}}

|Central Pacific coastal forests

|coniferous temperate rainforest

|Clayoquot Sound

|{{convert|265000|ha|acres}}

|Central Pacific coastal forests

|coniferous temperate rainforest

|Great Bear Rainforest

| {{convert|16000|km2|acre}}

|British Columbia mainland coastal forests

|coniferous temperate rainforest

|North River Wilderness Area{{cite web

| title = Protected Areas

| publisher = Nova Scotia Environment

| url = http://www.gov.ns.ca/nse/protectedareas/map.asp

| access-date = 2008-12-27

| date = April 2009

| archive-date = 2009-01-03

| archive-url = https://web.archive.org/web/20090103003517/http://www.gov.ns.ca/nse/protectedareas/map.asp

| url-status = live

}}

|

|New England-Acadian forests

|Eastern Hemlock

|Panuke Lake Nature Reserve

|{{convert|47|ha|acres}}

|New England-Acadian forests

|Eastern Hemlock, Red Spruce

|Shelburne Heritage River

|

|New England-Acadian forests

|Eastern Hemlock, pine

|Pollett's Cove

|

|Eastern Canadian forests, New England-Acadian forests

|boreal

|French River Wilderness Area

|

|New England-Acadian forests

|Eastern Hemlock

|Trout Brook Wilderness Area

|

|

|deciduous

|Tobeatic Wilderness Area

|

|New England-Acadian forests

|Eastern Hemlock, pine

|Portapique River Wilderness Area

|

|New England-Acadian forests

|Eastern Hemlock, Red Spruce

|Waverley–Salmon River Long Lake Wilderness Area

|

|New England-Acadian forests

|Eastern Hemlock, Red Pine, Eastern White Pine

|Boggy Lake Wilderness Area

|

|New England-Acadian forests

|Sugar Maple, Yellow Birch, American Beech

|Great Barren & Quinan Lakes Nature Reserve

|

|New England-Acadian forests

|Eastern Hemlock, Red Spruce

|MacFarlane Woods Nature Reserve

|

|New England-Acadian forests

|Sugar Maple, Yellow Birch, American Beech

|Bornish Hill Nature Reserve

|

|New England-Acadian forests

|hardwood

|Sporting Lake Nature Reserve

|{{convert|25|ha|acres}}

|New England-Acadian forests

|Eastern Hemlock, White Pine, Red Spruce

|Gillies Grove, Arnprior

|{{convert|18|ha|acres}}

|Eastern Great Lakes lowland forests

|

|Obabika Old-Growth Forest

|{{convert|2400|ha|acres}}

|Eastern forest-boreal transition

|

|Quetico Provincial Park

|{{convert|1500|km2|acres}}

|Western Great Lakes forests

|

|White Bear Forest

|

|Eastern forest-boreal transition

|

|Wolf Lake Forest Reserve

|{{convert|336|ha|acres}}

|Eastern forest-boreal transition

|red pine

|Bois Beckett Forest,{{cite web| url=http://boisbeckett.org/organisme.html| title=Organisme| publisher=Regroupement du Bois Beckett| language=fr| access-date=13 August 2014| archive-date=13 August 2014| archive-url=https://web.archive.org/web/20140813224900/http://boisbeckett.org/organisme.html| url-status=live}} Sherbrooke

|{{convert|6|ha|acres|abbr=on}}

|New England-Acadian forests

|hemlock, beech

|Papineau Woods, Laval,{{cite web|url=https://www.bonjourquebec.com/en-ca/listing/to-see-and-do/bois-papineau/0q4q|title=Bois Papineau}}

|{{convert|100|ha|acres|abbr=on}}

|

|

! State

! Area

! Old-growth extent

! WWF ecoregion

! class="unsortable"| Old-growth forest type

|Sipsey Wilderness{{cite web| url = http://www.primalnature.org/ogeast/contents.html | title = Old Growth in the East: A Survey | first=Mary Byrd |last=Davis | date = 10 October 2010 |archive-url=https://web.archive.org/web/20110525035919/http://www.primalnature.org/ogeast/survey.html |archive-date=25 May 2011}}

|

|Appalachian mixed mesophytic forests

|Eastern Hemlock, American Beech, Sweet Birch, White Oak, Tulip Poplar

|Tongass National Forest[http://www.fs.fed.us/r10/tongass/forest_facts/faqs/forestmgmt.shtml#1 Tongass Forest Management FAQs] {{Webarchive|url=https://web.archive.org/web/20110629141045/http://www.fs.fed.us/r10/tongass/forest_facts/faqs/forestmgmt.shtml#1 |date=2011-06-29 }} (accessed 2008-09-18).

|{{convert|sortable=on|5400000|acre}}

|Northern Pacific coastal forests, Pacific Coastal Mountain icefields and tundra

|Western Red Cedar, Sitka Spruce, Western Hemlock

|White River National Wildlife Refuge

|{{convert|sortable=on|973|acre}}

|Mississippi lowland forests

|American Sweetgum, Nuttall's Oak, Willow Oak, Sugarberry, American Elm, Green Ash, American Sycamore, Pecan, American Elm, Baldcypress

|Ouachita National Forest

|{{convert|sortable=on|800000|acre}}

|

|Post Oak, Shortleaf Pine, Hickory, Northern Red Oak, White Oak, Blackjack Oak, Eastern Redcedar, Gum Bumelia, Winged Elm, Yaupon

|Ozark-St. Francis National Forest{{Cite web

| year = 2005

| title = Final Environmental Impact Statement for the Revised Land and Resource Management Plan. Ozark-St. Francis National Forests

| url = http://www.fs.fed.us/oonf/ozark/projects/planrevision/eis.html

| publisher = United States Forest Service Southern Region

| access-date = 2011-02-16

| archive-date = 2007-02-08

| archive-url = https://web.archive.org/web/20070208112205/http://www.fs.fed.us/oonf/ozark/projects/planrevision/eis.html

| url-status = live

}} Final Environmental Impact Statement, p. 365

|{{convert|sortable=on|11000|acre}}

|

|Shortleaf Pine, Post Oak, Blackjack Oak, Eastern Black Oak, White Oak, Northern Red Oak

|Hot Springs National Park

|{{convert|sortable=on|320|acre}}

|

|Shortleaf Pine, Blackjack Oak, White Oak

|Overflow National Wildlife Refuge

|{{convert|sortable=on|230|acre}}

|

|American Beech, Sugar Maple

|Yosemite National Park{{Citation

| last1 = Bolsinger

| first1 = Charles L.

| last2 = Waddell

| first2 = Karen L.

| year = 1993

| title = Area of old-growth forests in California, Oregon, and Washington

| url = http://www.fs.fed.us/pnw/pubs/pnw_rb197.pdf

| publisher = United States Forest Service, Pacific Northwest Research Station

| id = Resource Bulletin PNW-RB-197

| access-date = 2010-10-22

| archive-date = 2020-10-23

| archive-url = https://web.archive.org/web/20201023223431/https://www.fs.fed.us/pnw/pubs/pnw_rb197.pdf

| url-status = live

}}

|{{convert|sortable=on|225510|acre}}

|Sierra Nevada forests

|Giant Sequoia, Ponderosa Pine, Jeffrey Pine, Sugar Pine, White Fir, California Incense Cedar, Coast Douglas-fir, Red Fir, Western White Pine, Lodgepole Pine, Foxtail Pine

|Sequoia-Kings Canyon National Park

|{{convert|sortable=on|202430|acre}}

|Sierra Nevada forests

|Giant Sequoia, Ponderosa Pine, Jeffrey Pine, Sugar Pine, White Fir, Red Fir, California Incense Cedar

|Lassen Volcanic National Park

|{{convert|sortable=on|27130|acre}}

|Sierra Nevada forests

|Ponderosa Pine, Jeffrey Pine, Sugar Pine, White Fir, Red Fir, Western White Pine, Mountain Hemlock, Lodgepole Pine, Whitebark Pine

|Redwood National and State Parks{{cite web| title = Frequently Asked Questions| publisher = National Park Service| date = August 17, 2008| url = https://www.nps.gov/redw/faqs.htm| access-date = 2008-11-15| archive-date = 2008-12-26| archive-url = https://web.archive.org/web/20081226130339/http://www.nps.gov/redw/faqs.htm| url-status = live}}

|{{convert|sortable=on|38982|acre}} or more

|Northern California coastal forests

|Coast Redwood

|Humboldt Redwoods State Park

|{{convert|sortable=on|23600|acre}}

|Northern California coastal forests

|Coast Redwood

|Muir Woods National Monument

|{{convert|sortable=on|240|acre}}

|California interior chaparral and woodlands

|Coast Redwood

|Samuel P. Taylor State Park

|{{convert|sortable=on|600|acre}}

|California interior chaparral and woodlands

|Coast Redwood

|Big Basin Redwoods State Park

|{{convert|sortable=on|10800|acre}}

|Northern California coastal forests

|Coast Redwood

|Henry Cowell Redwoods State Park

|{{convert|sortable=on|200|acre}}

|Northern California coastal forests

|Coast Redwood, Coast Douglas-fir, Pacific Madrone, Ponderosa Pine

|Headwaters Forest Reserve{{cite web |url=http://www.blm.gov/pgdata/etc/medialib/blm/ca/pdf/pdfs/arcata_pdfs/headwaters_documents.Par.19453.File.dat/FY07ManagersReport.pdf |title=Archived copy |access-date=2009-04-10 |url-status=dead |archive-url=https://web.archive.org/web/20080725013121/http://www.blm.gov/pgdata/etc/medialib/blm/ca/pdf/pdfs/arcata_pdfs/headwaters_documents.Par.19453.File.dat/FY07ManagersReport.pdf |archive-date=2008-07-25 }} Headwaters Forest Reserve 2007 BLM Manager Report

|{{convert|sortable=on|3088|acre}}

|Northern California coastal forests

|Coast Redwood

|Blue oak woodlands{{cite web

|last = Stahle

|first = David

|title = Ancient Blue Oak Woodlands of California

|publisher = University of Arkansas Tree-Ring Laboratory

|url = http://www.uark.edu/blueoak/

|access-date = 2008-11-10

|url-status = dead

|archive-url = https://web.archive.org/web/20081204063001/http://www.uark.edu/blueoak/

|archive-date = 2008-12-04

}}

|{{convert|sortable=on|500000

|Angeles National Forest{{Citation

| last1 = Warbington

| first1 = Ralph

| last2 = Beardsley

| first2 = Debby

| year = 2002

| title = 2002 Estimates of Old Growth Forests on the 18 National Forests of the Pacific Southwest Region

| url = http://www.fs.fed.us/r5/rsl/publications/oldgrowth/oldgrowth2002.html

| publisher = United States Forest Service, Pacific Southwest Region

| access-date = 2010-10-22

| archive-date = 2015-09-24

| archive-url = https://web.archive.org/web/20150924130138/http://www.fs.fed.us/r5/rsl/publications/oldgrowth/oldgrowth2002.html

| url-status = live

}}

|{{convert|sortable=on|29000|acre}}

|California montane chaparral and woodlands

|Jeffrey Pine, Bigcone Douglas-fir, Ponderosa Pine, White Fir, Lodgepole Pine

|Eldorado National Forest

|{{convert|sortable=on|122000|acre}}

|Sierra Nevada forests

|Coast Douglas-fir, Ponderosa Pine, White Fir, Lodgepole Pine, Red Fir

|Inyo National Forest

|{{convert|sortable=on|238000|acre}}

|Sierra Nevada forests – Great Basin montane forests

|Lodgepole Pine, Jeffrey Pine, Great Basin Bristlecone Pine

|Klamath National Forest

|{{convert|sortable=on|168000|acre}}

|Klamath-Siskiyou forests

|Ponderosa Pine, Jeffrey Pine, Coast Douglas-fir, Red Fir, White Fir, California Incense Cedar

|Lassen National Forest

|{{convert|sortable=on|92000|acre}}

|

|Coast Douglas-fir, Ponderosa Pine, White Fir, Jeffrey Pine, Red Fir, Lodgepole Pine

|Los Padres National Forest

|{{convert|sortable=on|18900|acre}}

|

|Jeffrey Pine, Coast Redwood, Coast Douglas-fir, White Fir

|Mendocino National Forest

|{{convert|sortable=on|60000|acre}}

|

|Coast Douglas-fir, Ponderosa Pine, White Fir, Tanoak, Pacific madrone

|Modoc National Forest

|{{convert|sortable=on|43400|acre}}

|

|Lodgepole Pine, Ponderosa Pine, White Fir, California Incense Cedar, Red Fir

|Pfeiffer Big Sur State Park{{cite web |title=Pfeiffer Big Sur State Park |url=https://www.oldgrowthforest.net/ca-pfeiffer-big-sur-state-park |website=Old Growth Forest Network |access-date=2022-05-05 |archive-date=2023-01-21 |archive-url=https://web.archive.org/web/20230121042440/https://www.oldgrowthforest.net/ca-pfeiffer-big-sur-state-park |url-status=live }}

|{{convert|sortable=on|1006|acre}}{{cite web |title=Pfeiffer Big Sur State Park |url=https://en.wikipedia.org/wiki/Pfeiffer_Big_Sur_State_Park |website=Wikipedia |access-date=2022-05-05 |archive-date=2022-05-07 |archive-url=https://web.archive.org/web/20220507234104/https://en.wikipedia.org/wiki/Pfeiffer_Big_Sur_State_Park |url-status=live }}{{Circular reference|date=June 2022}}

|

|Redwood

|Plumas National Forest

|{{convert|sortable=on|127000|acre}}

|

|Coast Douglas-fir, Ponderosa Pine, White Fir, Jeffrey Pine, Red Fir

|San Bernardino National Forest

|{{convert|sortable=on|87400|acre}}

|

|Bigcone Douglas-fir, Ponderosa Pine, White Fir, Jeffrey Pine, Lodgepole Pine

|Sequoia National Forest

|{{convert|sortable=on|196000|acre}}

|

|Giant Sequoia, Jeffrey Pine, Red Fir, Coast Douglas-fir, Ponderosa Pine, White Fir, Lodgepole Pine

|Shasta-Trinity National Forest

|{{convert|sortable=on|230000|acre}}

|

|Coast Douglas-fir, Tanoak, Pacific madrone, Red Fir, White Fir, Jeffrey Pine

|Sierra National Forest

|{{convert|sortable=on|383000|acre}}

|

|Lodgepole Pine, Red Fir

|Six Rivers National Forest

|{{convert|sortable=on|137000|acre}}

|

|Coast Douglas-fir, Tanoak, Pacific madrone, White Fir

|Stanislaus National Forest

|{{convert|sortable=on|139000|acre}}

|

|Lodgepole Pine, Jeffrey Pine, White Fir

|Tahoe National Forest

|{{convert|sortable=on|84000|acre}}

|

|Coast Douglas-fir, Ponderosa Pine, White Fir, Sugar Pine, California Incense Cedar, California Black Oak, Lodgepole Pine, Red Fir

|Arapaho National Forest{{cite encyclopedia |last=Rebertus |first=Alan J. |author2=Thomas T. Veblen |author3=Lynn M. Roovers |author4=Joy Nystrom Mast |title= Structure and Dynamics of Old-Growth Engelmann Spruce-Subalpine Fir in Colorado |pages=139–153 |editor1=Merrill R. Kaufmann |editor2=William H. Moir |editor3=Richard L. Bassett|encyclopedia=Old-growth forests in the Southwest and Rocky Mountain regions. General Technical Report RM-213 |year=1992 |publisher=Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture |oclc=26835406}}

|{{convert|sortable=on|2590|ha}}

|

|Subalpine Fir, Engelmann Spruce

|Cathedral Pines, Cornwall

|{{convert|sortable=on|42|acre}}

|

|White Pine, Hemlock

|Sages Ravine, Salisbury

|{{convert|sortable=on|100|acre}}

|

|Hemlock, Oak

|Great Mountain Forest, Norfolk—North Forty Tract

|{{convert|sortable=on|40|acre}}

|

|Hemlock, Hardwoods, White Pine

|Great Mountain Forest, Norfolk—Bigelow Pond Site

|{{convert|sortable=on|5|acre}}

|

|Hemlock

|Mount Riga Incorporated, Salisbury

|{{convert|sortable=on|8|acre}}

|

|White Pine, Eastern Hemlock, Yellow Birch, American Beech

|Bear Mountain, Salisbury

|{{convert|sortable=on|5|acre}}

|

|Sweet Birch, Pitch Pine

|Belden Forest, Simsbury{{cite web |title=Belden Forest |url=https://www.oldgrowthforest.net/ct-belden-forest |website=Old-Growth Forest Network |access-date=17 January 2021 |archive-date=24 January 2021 |archive-url=https://web.archive.org/web/20210124155045/https://www.oldgrowthforest.net/ct-belden-forest |url-status=live }}

|{{convert|sortable=on|40|acre}}

|

|Eastern White Pine{{cite news |last1=Marteka |first1=Peter |title=Belden Forest In Simsbury Offers Thrills And Inspiration |url=https://www.courant.com/news/connecticut/hc-xpm-2011-04-08-hc-marteka-belden-forest-0408-20110408-story.html |access-date=17 January 2021 |work=The Hartford Courant |date=April 8, 2011 |archive-date=2021-07-08 |archive-url=https://web.archive.org/web/20210708092433/https://www.courant.com/news/connecticut/hc-xpm-2011-04-08-hc-marteka-belden-forest-0408-20110408-story.html |url-status=live }}

|Eglin Air Force Base

|{{convert|sortable=on|6795|acre}}

|

|longleaf pine

|Apalachicola National Forest

|

|Southeastern conifer forests

|Pondcypress, Slash Pine

|Big Cypress National Preserve

|{{convert|sortable=on|23000|acre}}

|South Florida rocklands, Everglades

|slash pine

|Big Cypress National Preserve

|{{convert|sortable=on|158000|acre}}

|South Florida rocklands, Everglades

|pondcypress

|Tosohatchee Wildlife Management Area

|{{convert|1000|acre

|

|Floodplain swamp

|Tosohatchee Wildlife Management Area

|40 acres (16 ha)

|

|Mesic flatwoods

|Tosohatchee Wildlife Management Area

|Unknown, up to 1000 acres

|

|Hydric hammock

|Chattahoochee National Forest{{cite web

|url = http://www.fs.usda.gov/wps/portal/fsinternet/!ut/p/c5/04_SB8K8xLLM9MSSzPy8xBz9CP0os3gDfxMDT8MwRydLA1cj72DTUE8TAwgAykeaxRtBeY4WBv4eHmF-YT4GMHn8usNB9uHXDzYBB3A00PfzyM9N1S_IjTDIMnFUBADW0rdA/dl3/d3/L2dJQSEvUUt3QS9ZQnZ3LzZfMjAwMDAwMDBBODBPSEhWTjJNMDAwMDAwMDA!/?navtype=BROWSEBYSUBJECT&cid=fsm9_029160&navid=130000000000000&pnavid=&ss=110803&position=Not%20Yet%20Determined.Html&ttype=detail&pname=Chattahoochee-Oconee%20National%20Forest-%20Land

|title = Old Growth Chattahoochee-Oconee National Forests, Georgia

|access-date = 2011-02-15

|author = United States Department of Agriculture Forest Service

|date = February 2008

|website = www.fs.usda.gov

|archive-date = 2011-10-05

|archive-url = https://web.archive.org/web/20111005045353/http://www.fs.usda.gov/wps/portal/fsinternet/!ut/p/c5/04_SB8K8xLLM9MSSzPy8xBz9CP0os3gDfxMDT8MwRydLA1cj72DTUE8TAwgAykeaxRtBeY4WBv4eHmF-YT4GMHn8usNB9uHXDzYBB3A00PfzyM9N1S_IjTDIMnFUBADW0rdA/dl3/d3/L2dJQSEvUUt3QS9ZQnZ3LzZfMjAwMDAwMDBBODBPSEhWTjJNMDAwMDAwMDA!/?navtype=BROWSEBYSUBJECT&cid=fsm9_029160&navid=130000000000000&pnavid=&ss=110803&position=Not%20Yet%20Determined.Html&ttype=detail&pname=Chattahoochee-Oconee%20National%20Forest-%20Land

|url-status = live

}}

|{{convert|sortable=on|346|acre}}

|Appalachian-Blue Ridge forests

|River floodplain hardwood, Dry-mesic oak forest, Seasonally wet oak-hardwood woodland

| Fernbank Forest

| {{convert|sortable=on|65|acre}}

| Piedmont Hardwood Forest

| Tulip Poplar – Oak – Hickory{{citation needed|date=January 2023}}

|Big Trees Forest Preserve

|30 acres (12 ha)

|Piedmont Hardwood Forest

|oak-hickory-pine forest{{Cite web |url=https://www.oldgrowthforest.net/ga-john-ripley-forbes-big-trees-forest-preserve |title=John Ripley Forbes, Big Trees Forest Preserve |access-date=2023-01-20 |archive-date=2023-01-21 |archive-url=https://web.archive.org/web/20230121042440/https://www.oldgrowthforest.net/ga-john-ripley-forbes-big-trees-forest-preserve |url-status=live }}{{full citation needed|date=January 2023}}

|Shawnee National Forest

|{{convert|sortable=on|2800|acre}}

|

|post oak – blackjack oak

|Cache River State Natural Area

|{{convert|sortable=on|1600|acre}}

|Central U.S. hardwood forests

|

|Cypress Creek National Wildlife Refuge

|{{convert|sortable=on|500|acre}}

|Central U.S. hardwood forests

|

|Beall Woods State Park

|{{convert|sortable=on|329|acre}}

|Central U.S. hardwood forests

|

|Hoosier National Forest

|{{convert|sortable=on|390|acre}}

|Central U.S. hardwood forests

|Post Oak

|Douglas Woods{{cite web

|url = http://www.nature.org/wherewework/northamerica/states/indiana/work/art12466.html

|title = The Nature Conservancy in Indiana  – Douglas Woods

|access-date = 2009-07-14

|author = The Nature Conservancy

|author-link = The Nature Conservancy

|archive-date = 2009-07-21

|archive-url = https://web.archive.org/web/20090721164516/http://www.nature.org/wherewework/northamerica/states/indiana/work/art12466.html

|url-status = live

}}

|{{convert|sortable=on|400|acre}}

|Southern Great Lakes forests

|Silver Maple, Oak, Hickory

|Wesselman Woods

|{{convert|sortable=on|200|acre}}

|Central U.S. hardwood forests

|Sugar Maple, Tulip Tree, Oak

|Pioneer Mothers Memorial Forest{{cite web

| url = http://www.indianaoutfitters.com/Destinations/Pioneer_Mothers.htm

| title = Pioneer Mothers Memorial Forest Trail

| access-date = 2009-08-10

| archive-date = 2010-02-18

| archive-url = https://web.archive.org/web/20100218125454/http://www.indianaoutfitters.com/Destinations/Pioneer_Mothers.htm

| url-status = live

}}

|{{convert|sortable=on|88|acre}}

|Central U.S. hardwood forests

|Oak

|Ginn Woods{{cite web

| url = http://cms.bsu.edu/academics/centersandinstitutes/fseec/properties/ginnwoods

| title = Ginn Woods - Ball State University

| website = bsu.edu

| publisher = Ball State University

| access-date = 21 February 2016

| archive-date = 2 March 2016

| archive-url = https://web.archive.org/web/20160302134707/http://cms.bsu.edu/academics/centersandinstitutes/fseec/properties/ginnwoods

| url-status = live

}}

|{{convert|sortable=on|161|acre}}

|Southern Great Lakes forests

|

|Meltzer Woods{{Cite news

| url = http://www.indystar.com/story/life/2014/11/05/old-growth-forest-indiana/18530951/

| title = Take 1st look at weird Indiana woods

| last = Higgins

| first = Will

| date = 6 November 2014

| website = indystar.com

| publisher = The Indianapolis Star

| access-date = 21 February 2016

| archive-date = 5 August 2020

| archive-url = https://web.archive.org/web/20200805052825/https://www.indystar.com/story/life/2014/11/05/old-growth-forest-indiana/18530951/

| url-status = live

}}

|{{convert|sortable=on|48|acre}}

|Southern Great Lakes forests

|Bur oak, Black ash, Swamp white oak, Beech, Maples

|Bicentennial Woods{{Cite news

| url = http://www.nature.org/ourinitiatives/regions/northamerica/unitedstates/indiana/placesweprotect/bicentennial-woods.xml

| title = Bicentennial Woods - The Nature Conservancy

| website = nature.org

| publisher = The Nature Conservancy

| access-date = 21 February 2016

| archive-date = 15 February 2016

| archive-url = https://web.archive.org/web/20160215131339/http://www.nature.org/ourinitiatives/regions/northamerica/unitedstates/indiana/placesweprotect/bicentennial-woods.xml

| url-status = live

}}

|{{convert|sortable=on|79|acre}}

|Southern Great Lakes forests

|Oaks, Maples, Sycamores, Sassafras, Slippery elm and Flowering dogwood

|Fort Leavenworth

|{{convert|sortable=on|1000|acre}}

|Central forest-grasslands transition

|Eastern floodplain

|Blanton Forest

|{{convert|sortable=on|2239|acre}}

|

|

|Lilley Cornett Woods

|{{convert|sortable=on|252|acre}}

|

|

|Baxter State Park

|{{convert|sortable=on|23094|acre}}

|

|Balsam Fir

|Mahoosuc Mountains Ecological Reserve

|{{convert|sortable=on|2444|acre}}

|

|Balsam Fir

|Bigelow Mountain Ecological Reserve

|{{convert|sortable=on|3100|acre}}

|

|Balsam Fir

|Big Reed Forest Preserve

|{{convert|sortable=on|5000|acre}} or less

|

|northern hardwoods, spruce-fir, rich woods, and cedar swamps

|Belt Woods

|{{convert|sortable=on|43|acre}}

|

|white oak – tulip poplar

|Swallow Falls State Park ("Hemlock Grove")DeGroot, Bob (January 12, 2006), [http://maryland.sierraclub.org/newsletter/archives/2006/01/a_004.asp "Legislative Issue: Protecting Maryland's Forests and Wildlife"] {{webarchive|url=https://web.archive.org/web/20081128200352/http://maryland.sierraclub.org/newsletter/archives/2006/01/a_004.asp |date=2008-11-28 }}, Chesapeake: The Sierra Club Maryland Chapter Newsletter Online

|{{convert|sortable=on|39|acre}}

|Appalachian mixed mesophytic forests

|eastern hemlock – white pine

|Potomac-Garrett State Forest ("Crabtree Woods"){{Cite web|url=http://www.mdflora.org/placesatrisk/crabtree.html|archiveurl=https://web.archive.org/web/20090707225329/http://mdflora.org/placesatrisk/crabtree.html|url-status=dead|title=Maryland Native Plant Society: Crabtree Old-Growth Forest, Garrett County, Marylandwebsite=mdflora.org|archivedate=Jul 7, 2009|accessdate=Jul 23, 2022}}

|{{convert|sortable=on|500|acre}}

|Appalachian mixed mesophytic forests

|sugar maple – red oak – basswood – cucumber tree

|Mohawk Trail State Forest

|{{convert|sortable=on|612|acre}}

| New England-Acadian forests

| northern hardwood

|Ice Glen

|

| New England-Acadian forests

| northern hardwoodAbrams, Marc, [http://rparticle.web-p.cisti.nrc.ca/rparticle/AbstractTemplateServlet?calyLang=eng&journal=cjb&volume=78&year=2000&issue=7&msno=b00-057 The dendroecology and climatic impacts for old-growth white pine and hemlock on the extreme slopes of the Berkshire Hills, Massachusetts, U.S.A.]

|Monroe State Forest

|{{convert|sortable=on|273|acre}}

|New England-Acadian forests

|northern hardwood

|Mount Everett State Reservation

|{{convert|sortable=on|530|acre}}

|New England-Acadian forests

|northern hardwood

|Mount Greylock

|{{convert|sortable=on|555|acre}}

|New England-Acadian forests

|northern hardwood

|Mount Wachusett

|{{convert|sortable=on|220|acre}}

|New England-Acadian forests

|northern hardwood

|Mount Washington State Forest

|{{convert|sortable=on|300|acre}}

|New England-Acadian forests

|northern hardwood

|William Cullen Bryant Homestead{{cite web |url=http://www.oldgrowthforest.net/the-rivulet-at-the-william-cullen-bryant |title=The Rivulet at William Cullen Bryant Homestead |author=Old Growth Forest Network |access-date=17 January 2019 |archive-date=19 January 2019 |archive-url=https://web.archive.org/web/20190119122959/http://www.oldgrowthforest.net/the-rivulet-at-the-william-cullen-bryant |url-status=live }}{{cite web |url=http://www.cummington-ma.gov/BryantHomestead.php |title=The William Cullen Bryant Homestead |author=Cummington MA official town Website |access-date=17 January 2019 |archive-date=19 January 2019 |archive-url=https://web.archive.org/web/20190119174344/http://www.cummington-ma.gov/BryantHomestead.php |url-status=live }}

|{{convert|sortable=on|109|acre}}

|New England-Acadian forests

|Eastern White Pine, Black Cherry, Sugar Maple

|Hartwick Pines State Park

|{{convert|sortable=on|49|acre}}{{Cite web|url=http://www.michigan.org/property/hartwick-pines-state-park/|title=Hartwick Pines State Park, Visitors Center & Logging Museum|website=www.michigan.org|accessdate=Jul 23, 2022|archive-date=October 31, 2016|archive-url=https://web.archive.org/web/20161031201943/http://www.michigan.org/property/hartwick-pines-state-park/|url-status=live}}

|Western Great Lakes forests

|Eastern White Pine, Red Pine, Eastern Hemlock, Beech, Sugar Maple

|Porcupine Mountains

|{{convert|sortable=on|31000|acre}}

|Western Great Lakes forests

|northern hardwood

|Sylvania Wilderness

|{{convert|sortable=on|15000|acre}}

|Western Great Lakes forests

|northern hardwood

|Warren Woods

|{{convert|sortable=on|200|acre}}

|Southern Great Lakes forests

|Beech-Maple forest

|Boundary Waters

|{{convert|sortable=on|401000|acre}}

|Western Great Lakes forests

|white pine, red pine, fir/birch, jack pine – black spruce, maple, aspen

|Keeley Creek Natural Area

|{{convert|sortable=on|900|acre}}

|Western Great Lakes forests

|bog and upland

|Itasca State Park

|{{convert|sortable=on|4094|acre}}

|Western Great Lakes forests

|Eastern White Pine, Red Pine

|Mark Twain National Forest

|{{convert|sortable=on|30000|acre}} or less

|Central U.S. hardwood forests

|Post Oak and Chinkapin Oak savanna and flatwoods

|Caney Mountain

|{{convert|sortable=on|4000|acre}} or more

|Central U.S. hardwood forests

|post oak savanna

|Great Gulf

|

|

|New England-Acadian forests

|Crawford Notch

|

|

|New England-Acadian forests

|The Bowl Research Natural Area{{cite web|title=Research Natural Area: The Bowl|url=http://www.nrs.fs.fed.us/rna/nh/white-mountain/the-bowl/|website=Northern Research Station|access-date=1 October 2015|archive-date=3 October 2015|archive-url=https://web.archive.org/web/20151003024240/http://www.nrs.fs.fed.us/rna/nh/white-mountain/the-bowl/|url-status=live}}

|{{convert|sortable=on|510|acre}}

|New England-Acadian forests

|Red Spruce, Balsam fir, Beech, Yellow birch, Sugar maple, Paper birch

|Hemenway State Forest{{cite web

| title = Sheldrick Forest Preserve

| date = 13 January 2017

| publisher = Laconia Daily Sun

| url = https://www.laconiadailysun.com/opinion/colums/lakes-region-hiking-ancient-pines-of-the-hemenway-state-forest/article_8cad7d48-c5df-5220-997d-71bede6e7ca5.html

| access-date = 2019-01-14

| archive-date = 2019-01-15

| archive-url = https://web.archive.org/web/20190115023334/https://www.laconiadailysun.com/opinion/colums/lakes-region-hiking-ancient-pines-of-the-hemenway-state-forest/article_8cad7d48-c5df-5220-997d-71bede6e7ca5.html

| url-status = live

}}

|{{convert|sortable=on|135|acre}}

|New England-Acadian forests

|Eastern White Pine

|The Bowl Research Natural Area

|{{convert|sortable=on|510|acre}}

|New England-Acadian forests

|Red Spruce, Balsam fir, Beech, Yellow birch, Sugar maple, Paper birch

|Saddler's Woods

|{{convert|sortable=on|25|acre}}

|Northeastern coastal forests

|Eastern Black Oak, White Oak, Northern Red Oak, American Beech, Tulip Poplar, Red Maple

|Bear Swamp

|{{convert|sortable=on|215|acre}}

|Atlantic coastal pine barrens

|Black Gum, American Sweetgum, Red Maple, Sweetbay Magnolia, American Beech, Swamp White Oak, American Holly

|William L. Hutcheson Memorial Forest

|{{convert|sortable=on|65|acre}}

|Northeastern coastal forests

|White Oak, Eastern Black Oak, Northern Red Oak

|Tillman Ravine

|{{convert|sortable=on|25|acre}}

|Allegheny Highlands forests

|Eastern Hemlock

|Clayton Park{{cite web |title=Clayton Park |url=https://www.oldgrowthforest.net/nj-clayton-park |website=Old-Growth Forest Network |access-date=27 August 2024}}

|{{convert|sortable=on|78|acre}}{{cite web |title=Monmouth County Park System Parks Huber Woods Park |url=https://www.monmouthcountyparks.com/page.aspx?Id=2529 |website=www.monmouthcountyparks.com |access-date=13 August 2024}}

|Northeastern coastal forests

|American Beech,White Oak, Northern Red Oak, Gray birch

|Catskill Mountains

|{{convert|sortable=on|60000|acre}} or more

|Allegheny Highlands forests

|

|Adirondack Mountains

|{{convert|sortable=on|150000|acre}} or more

|Eastern forest-boreal transition

|

|Thain Family Forest

|{{convert|sortable=on|50|acre}} or more

|Northern hardwood forest

|

|Mianus River Gorge Preserve{{Cite journal|last=Bard|first=Gily E.|date=July 1967|title=The Woody Vegetation of the Mature Forest of the Mianus River Gorge Preserve|journal=Bulletin of the Torrey Botanical Club|volume=94|issue=4|pages=336–344|doi=10.2307/2483905|issn=0040-9618|jstor=2483905}}{{Cite web|url=http://www.mianus.org/|title=Mianus River Gorge|website=www.mianus.org|language=en-US|access-date=2019-01-09|archive-date=2019-01-09|archive-url=https://web.archive.org/web/20190109205732/http://www.mianus.org/|url-status=live}}

|60 - 100 acres (24 - 40.5 ha){{Cite journal|date=2006-08-01|title=Structural and compositional change in an old-growth eastern hemlock Tsuga canadensis forest, 1965–2004|journal=Forest Ecology and Management|language=en|volume=231|issue=1–3|pages=114–118|doi=10.1016/j.foreco.2006.05.022|issn=0378-1127|last1=Weckel|first1=Mark|last2=Tirpak|first2=John M.|last3=Nagy|first3=Chris|last4=Christie|first4=Rod|bibcode=2006ForEM.231..114W }}

|Appalachian hemlock–northern hardwood forest

|Eastern hemlock-beech forest

|Great Smoky Mountains

|{{convert|sortable=on|187000|acre}}

|Appalachian-Blue Ridge forests

|

|Nantahala National Forest

|{{convert|sortable=on|30800|acre}}

|Appalachian-Blue Ridge forests

|

|Pisgah National Forest

|{{convert|sortable=on|46600|acre}}

|Appalachian-Blue Ridge forests

|

|Croatan National Forest

|{{convert|sortable=on|10000|acre}}

|Middle Atlantic coastal forests

|pocosin

| Goll Woods State Nature Preserve

| {{convert|sortable=on|140|acre}}

| Southern Great Lakes forests

|

| Fowler Woods State Nature Preserve

| {{convert|sortable=on|50|acre}}

| Southern Great Lakes forests

|

| Crall Woods National Natural Landmark

| {{convert|sortable=on|40|acre}}

| Southern Great Lakes forests

|

| Dysart Woods

| {{convert|sortable=on|57|acre}}

| Appalachian mixed mesophytic forests

|

| Hawk Woods in Riddle State Nature Preserve

| {{convert|sortable=on|106|acre}}

| Appalachian mixed mesophytic forests{{citation needed|date=January 2023}}

|

| Morgan Sisters Woods in Wayne National Forest

| {{convert|sortable=on|200|acre}}

| Appalachian mixed mesophytic forests

|

| California Woods Nature Preserve

| {{convert|sortable=on|40|acre}}

| Southern Great Lakes forests, Central U.S. hardwood forests

|

| Caldwell Park (Cincinnati)

| {{convert|sortable=on|122|acre}} or less

| Southern Great Lakes forests, Central U.S. hardwood forests

|

| Hueston Woods State Nature Preserve

| {{convert|sortable=on|165

| Davey Woods State Nature Preserve

| {{convert|15

| Gross (Samuel) Memorial Woods State Nature Preserve

| {{convert|sortable=on|49|acre}}

| Southern Great Lakes forests

|

| Johnson Woods State Nature Preserve

| {{convert|sortable=on|206|acre}}

| Southern Great Lakes forests

|

|Keystone Ancient Forest Preserve

|{{convert|sortable=on|1300|acre}}

|Central forest-grasslands transition zone

|Post Oak, Blackjack Oak, Eastern Redcedar

|Crater Lake National Park

|{{convert|sortable=on|50000|acre}}

|

|

|Deschutes National Forest

|{{convert|sortable=on|348100|acre}}

|

|

|Malheur National Forest

|{{convert|sortable=on|312000|acre}}

|

|

|Mount Hood National Forest

|{{convert|sortable=on|345300|acre}}

|

|Coast Douglas-fir, Western Hemlock, Western Red Cedar

|Ochoco National Forest

|{{convert|sortable=on|95000|acre}}

|

|

|Rogue River-Siskiyou National Forest

|{{convert|sortable=on|345300|acre}}

|Klamath-Siskiyou forests

|Coast Douglas-fir, Port Orford Cedar, Ponderosa Pine, Sugar Pine, Coast Douglas-fir, California Incense Cedar, White Fir, Red Fir, Mountain Hemlock

|Siuslaw National Forest

|{{convert|sortable=on|33800|acre}} (1993 estimate)

|Central Pacific coastal forests

|

|Umatilla National Forest

|{{convert|sortable=on|190741|acre}} (1993 estimate)

|

|

|Umpqua National Forest

|{{convert|sortable=on|535300|acre}} (1993 estimate)

|

|Mountain Hemlock, Ponderosa Pine

|Wallowa-Whitman National Forest

|{{convert|sortable=on|173000|acre}} (1993 estimate)

|

|

|Willamette National Forest

|{{convert|sortable=on|594800|acre}}

|

|Coast Douglas-fir, Western Hemlock, Western Red Cedar, Bigleaf Maple

|Winema National Forest

|{{convert|sortable=on|711674|acre}}

|

|

|Fremont National Forest

|{{convert|sortable=on|549800|acre}}

|

|

|Emigrant Springs State Heritage Area

|

|Blue Mountains forests

|

|Cook Forest State Park

|{{convert|sortable=on|1500

|Alan Seeger Natural Area{{Cite book |last=Fergus |first=Charles |title=Natural Pennsylvania: Exploring the State Forest Natural Areas. |publisher=Stackpole Books |year=2002 |location=Mechanicsburg, PA |pages=63–67}}

|{{convert|sortable=on|390|acre}}

|Appalachian-Blue Ridge forests

|Eastern White Pine, Eastern Hemlock

|Bear Meadows Natural Area

|{{convert|sortable=on|320|acre}}

|Appalachian-Blue Ridge forests

|Black Spruce, Balsam Fir bog

|Detweiler Run Natural Area

|{{convert|sortable=on|185|acre}}

|Appalachian-Blue Ridge forests

|Eastern White Pine, Eastern Hemlock

|Thickhead Mountain Wild Area

|{{convert|sortable=on|50|acre}}

|Appalachian-Blue Ridge forests

|Chestnut Oak

|Woodbourne Forest and Wildlife Preserve

|{{convert|sortable=on|120|acre}}

|Allegheny Highlands forests

|Eastern Hemlock, Sweet Birch, Sugar Maple, Northern Red Oak, White Ash, American Beech

|Holtwood Environmental Preserve

|{{convert|sortable=on|200|acre}}

|Northeastern coastal forests

|Chestnut Oak, Eastern Hemlock, Umbrella Magnolia

|Anders Run Natural Area

|{{convert|sortable=on|50|acre}}

|Allegheny Highlands forests

|Eastern White Pine, Eastern Hemlock, Cucumber Magnolia, American Beech, American Hornbeam, Black Cherry, oak

|Sweet Root Natural Area

|{{convert|sortable=on|64|acre}}

|Appalachian-Blue Ridge forests

|Eastern Hemlock, Sweet Birch, Eastern White Pine, American Basswood, White Oak, Red Oak

|Hearts Content Recreation Area

|{{convert|sortable=on|122|acre}}

|Allegheny Highlands forests

|Eastern White Pine, Eastern Hemlock, American Beech

|Tionesta Scenic and Research Natural Areas

|{{convert|sortable=on|4000|acre}}

|Allegheny Highlands forests

|Eastern Hemlock, American Beech, Sugar Maple

|Allegheny Islands Wilderness

|{{convert|sortable=on|156|acre}}

|Allegheny Highlands forests

|Silver Maple, Sugar Maple, American Sycamore, Slippery Elm

|Bark Cabin Natural Area

|{{convert|sortable=on|73|acre}}

|Allegheny Highlands forests

|Eastern Hemlock, Northern Red Oak, White Ash, Bigtooth Aspen, Hickories

|Johnson Run Natural Area

|{{convert|sortable=on|26

|Forrest H. Duttlinger Natural Area

|{{convert|sortable=on|158|acre}}

|Allegheny Highlands forests

|Eastern Hemlock, American Beech, Black Cherry, Sugar Maple

|Pinchot State Forest, Montage Mountain

|{{convert|sortable=on|1200|acre}}

|Appalachian-Blue Ridge forests

|Eastern Hemlock, American Beech, Black Cherry, Yellow Birch, Red Oak, White Oak, Chestnut Oak, Ash, Tulip Poplar, Red Maple

|Snyder Middleswarth Natural Area

|{{convert|sortable=on|250|acre}}

|Appalachian-Blue Ridge forests

|Eastern Hemlock, Eastern White Pine, Pitch Pine

|Hemlocks Natural Area

|{{convert|sortable=on|120|acre}}

|Appalachian-Blue Ridge forests

|Eastern Hemlock

|Ricketts Glen State Park

|{{convert|sortable=on|2000|acre}}

|Allegheny Highlands forests

|Northern Hardwood Forest

|Peck Natural Area in Lake Winola

|{{convert|sortable=on|10-20|acre}}

|Allegheny Highlands forests

|Northern Hardwood Forest, Eastern White Pine, American Beech

|Great Swamp Wildlife Management Area

|{{convert|sortable=on|3000|acre}}

|Northeastern coastal forests

|Red Maple, Atlantic White Cedar, Black Gum

|Lawton's Valley Forest{{cite web

|url = http://rewhc.org/lawtonvalleyenchanted.shtml

|title = Enchanted Forest

|access-date = 2009-01-01

|author = Johnson, James A.

|date = 1 May 2004

|archive-date = 2008-11-21

|archive-url = https://web.archive.org/web/20081121195630/http://www.rewhc.org/lawtonvalleyenchanted.shtml

|url-status = live

}}

|

|Northeastern coastal forests

|Sugar Maple, White Ash, American Beech, Yellow Birch, Northern Red Oak

|Oakland Forest

|{{convert|sortable=on|20|acre}}

|Northeastern coastal forests

|American Beech, White Oak, Red Maple, Scarlet Oak

|Pawcatuck River floodplain forest

|{{convert|sortable=on|250|acre}}

|Northeastern coastal forests

|Red Maple floodplain

|Congaree National Park

|{{convert|sortable=on|11000|acre}}

|Middle Atlantic coastal forests

|bottomland hardwood forest

|Francis Beidler Forest

|{{convert|sortable=on|1700|acre}}

|Middle Atlantic coastal forests

|mixed hardwoods and cypress-tupelo swamp

|Ellicott Rock Wilderness

|{{convert|sortable=on|1000|acre}} or more

|Appalachian-Blue Ridge forests

|

|Great Smoky Mountains

|{{convert|sortable=on|187000|acre}}

|Appalachian-Blue Ridge forests

|

|Forest within Nashville{{cite news

| title = Old growth forest in Nashville saved

| url = http://www.wbir.com/news/local/story.aspx?storyid=109816&catid=173

| access-date = 2011-02-18

| archive-date = 2023-01-21

| archive-url = https://web.archive.org/web/20230121042446/https://www.wbir.com/error/404?storyid=109816&catid=173

| url-status = live

}}

|{{convert|sortable=on|225|acre}}

|Central U.S. hardwood forests

|Black Walnut, White Oak, American Sycamore, Persimmon, Pawpaw

|Old Forest Arboretum of Overton Park

|{{convert|sortable=on|172|acre}}

|{{citation needed|date=January 2023}}

|

|Red Canyon-Dixie National Forest{{cite web |title=Red Canyon- Dixie National Forest |url=https://www.oldgrowthforest.net/ut-red-canyon |website=Old-Growth Forest Network |access-date=21 March 2023}}

|{{convert|sortable=on|255|acre}}

|Wasatch and Uinta montane forest

|Ponderosa Pine, Douglas Fir, Pinyon-juniper woodland

|George Washington and Jefferson National Forests

|{{convert|sortable=on|230000|acre}}

|Appalachian-Blue Ridge forests

|Caledon Natural Area

|{{convert|sortable=on|300|acre}}

|Southeastern mixed forests

|Upland White Oak – Tulip Poplar

|Warm Springs Mountain

|{{convert|sortable=on|425|acre}}

|Appalachian-Blue Ridge forests

|Oak-Hickory, Pitch Pine

|North Landing River Preserve

|{{convert|sortable=on|200|acre}}

|Middle Atlantic coastal forests

|Pond Pine, Atlantic White Cedar and scattered ancient Bald cypress

|James Madison Estate

|{{convert|sortable=on|200|acre}}

|Southeastern mixed forests

|Northern Red Oak, White Oak, Tulip Tree and Hickory

|Olympic National Park

|{{convert|sortable=on|366000|acre}}

|

|

|North Cascades National Park

|{{convert|sortable=on|236000|acre}}

|

|

|Mount Rainier National Park

|{{convert|sortable=on|91000|acre}}

|

|

|Colville National Forest

|{{convert|sortable=on|212488|acre}}

|

|

|Gifford Pinchot National Forest

|{{convert|sortable=on|198000|acre}}

|

|

|Mount Baker-Snoqualmie National Forest

|{{convert|sortable=on|643500|acre}}

|

|

|Okanogan–Wenatchee National Forest

|{{convert|sortable=on|316000|acre}}

|

|

|Olympic National Forest

|{{convert|sortable=on|266800|acre}}

|

|

|Moran State Park

|{{convert|sortable=on|5000|acre}}

|

|Coast Douglas-fir

|Rockport State Park (Washington)

|{{convert|sortable=on|632|acre}}

|

|Coast Douglas-fir

|Federation Forest State Park

|{{convert|sortable=on|619|acre}}

|

|Coast Douglas-fir, Sitka Spruce

|South Whidbey State Park{{cite web |url=http://parks.state.wa.us/585/South-Whidbey-Island |title=South Whidbey State Park |publisher=Washington State Parks and Recreation Commission |access-date=12 April 2019}}

|{{convert|sortable=on|381|acre}}

|

|Coast Douglas-fir, Sitka spruce, Western Hemlock and Western Red-cedar

|Seward Park (Seattle)

|{{convert|sortable=on|300|acre}}

|

|Coast Douglas-fir

|Point Defiance Park

|{{convert|sortable=on|400|acre}}

|

|Coast Douglas-fir, Western Redcedar, Western Hemlock, Bigleaf Maple, Pacific Madrone

|West Hylebos Wetlands Park

|{{convert|sortable=on|120|acre}}

|

|Sitka Spruce, Bigleaf Maple, Black Cottonwood, Coast Douglas-fir, Western Redcedar

|Schmitz Preserve Park{{citation needed|date=January 2023}}

|{{convert|sortable=on|53|acre}}

|

|

|

|Cathedral State Park

|{{convert|sortable=on|132|acre}}

|

|Eastern Hemlock

|Monongahela National Forest{{cite web

|url = http://www.wvhighlands.org/mnf_fp/Land_and_Resource_Management_Plan.pdf

|title = Monongahela National Forest Land and Resource Management Plan, Appendix B Old Growth, B-4

|access-date = 2009-01-02

|author = United States Department of Agriculture

|date = September 2006

|author-link = United States Department of Agriculture

|archive-url = https://web.archive.org/web/20080513230352/http://www.wvhighlands.org/mnf_fp/Land_and_Resource_Management_Plan.pdf

|archive-date = 2008-05-13

|url-status = dead

}}

|{{convert|sortable=on|318|acre}} in [[Monongahela National Forest#Areas of interest within the Monongahela National Forest|

6 separate stands]]

|

|

|Apostle Islands National Lakeshore

|{{convert|sortable=on|1500|acre}}

|

|

|Chequamegon-Nicolet National Forest

|

|

|

|Gerstberger Pines{{cite web |title=Gerstberger Pines |url=https://taylorcountytourism.com/wp-content/uploads/2016/09/gerstberger-pines-nature-trail-taylor-county.pdf |website=Gerstberger Pines |access-date=2021-12-21 |archive-date=2021-12-21 |archive-url=https://web.archive.org/web/20211221164411/https://taylorcountytourism.com/wp-content/uploads/2016/09/gerstberger-pines-nature-trail-taylor-county.pdf |url-status=live }}

|{{convert|sortable=on|20|acre}}

|

|Eastern Hemlock, Yellow Birch, Red Oak, White Pine, Basswood, Red Maple

|Namekagon Barrens

|{{convert|sortable=on|4000|acre}}

|

|Jack pine and scrub oak

|Yellowstone National Park

|

|{{citation needed|date=January 2023}}

|Lodgepole Pine

! Country

! Area

! Old-growth extent

! WWF ecoregion

! class="unsortable"| Old-growth forest type

|Braulio Carrillo National Park

|{{convert|sortable=on|428|km2}}

|Talamancan montane and Isthmian–Atlantic moist forests

|

|Chagres National Park

|{{convert|sortable=on|428|km2}}

|

| coastal tropical

! Country

! Area

! Old-growth extent

! WWF ecoregion

! class="unsortable"| Old-growth forest type

| Primeval Forest National Park

| 7.5 acres

| Bahamian dry forests

| evergreen tropical hardwood

|El Toro Wilderness, El Yunque National Forest

|13,700 acres

|Puerto Rican moist forests

|Ternstroemia luquillensis and Dacryodes excelsa mature forests.{{Cite web |last=USDA |first=Forest Service |title=Forest Types / Tipos de bosque |url=https://www.fs.usda.gov/detail/elyunque/landmanagement/resourcemanagement/?cid=fseprd713402 |access-date=2022-06-16 |archive-date=2022-12-08 |archive-url=https://web.archive.org/web/20221208024143/https://www.fs.usda.gov/detail/elyunque/landmanagement/resourcemanagement/?cid=fseprd713402 |url-status=live }}

! Country

! Area

! Old-growth extent

! WWF ecoregion

! Old-growth forest type

|Lucifer Dékou-Dékou Biological Reserve

|{{convert|sortable=on|64,373 |ha}}

|Tropical and subtropical moist broadleaf forests

|Tropical rainforest