Tabusintac Lagoon and River Estuary
{{Infobox protected area
| name = Tabusintac Lagoon and River Estuary
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| coords = {{coord|47|20|N|64|56|W|region:CA-NB|format=dms|display=inline,title}}
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| area = {{convert|50|km2|sqmi}}
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| embedded = {{Designation list
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| designation1 = Ramsar
| designation1_date = 10 June 1993
| designation1_number = 612{{Cite web|title=Tabusintac Lagoon and River Estuary|website=Ramsar Sites Information Service|url=https://rsis.ramsar.org/ris/612|accessdate=25 April 2018}}}}
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The Tabusintac Lagoon and River Estuary is a wetland in Alnwick Parish, Northumberland County, in north-eastern New Brunswick, Canada. It was classified as a wetland of international importance on June 10, 1993. It is also a globally significant Important Bird Area for the population of common terns, and shorebirds in general, that it supports.{{Cite web
|url = http://www.bsc-eoc.org/iba/site.jsp?siteID=NB002
|archive-url = https://web.archive.org/web/20110612091910/http://www.bsc-eoc.org/iba/site.jsp?siteID=NB002
|url-status = dead
|archive-date = 2011-06-12
|title = Tabusintac Lagoon & River Estuary
|publisher = IBA Canada
|accessdate = 2008-01-31
}} Primarily a shallow coastal estuary with gentle slopes, the 50 km2 site is underlain by various sedimentary rocks, including red sandstone and shale.{{Cite web|url=http://www.ns.ec.gc.ca/wildlife/ramsar/lagoon.html |title=Tabusintac Lagoon and River Estuary |publisher=Environment Canada |accessdate=2008-01-31 |url-status=dead |archiveurl=https://web.archive.org/web/20070225062220/http://www.ns.ec.gc.ca/wildlife/ramsar/lagoon.html |archivedate=February 25, 2007 }} The lagoon system is protected from the Gulf of Saint Lawrence by a constantly shifting barrier beach and dune system
|url=http://www.ramsar.org/profile/profiles_canada.htm
|title=The Annotated Ramsar List: Canada
|work=The Annotated Ramsar List of Wetlands of International Importance
|publisher=Ramsar Convention Bureau
|date=2000-01-10
|accessdate=2008-01-31 |archiveurl = https://web.archive.org/web/20080129161427/http://www.ramsar.org/profile/profiles_canada.htm |archivedate = 2008-01-29}} that frequently blocks commonly used navigation channels. It attains an elevation of no more than 8 m above sea level.
It is located on the Acadian Peninsula, and includes Tabusintac Bay and the mouth of the Tabusintac River.{{Cite web|url=http://www.breadnmolasses.com/id26.html |title=Where the River Meets the Ocean, Tabusintac |last=Underhill |first=Kellie |publisher=Bread ‘n Molasses |date=October 2006 |accessdate=2008-01-31 |url-status=dead |archiveurl=https://web.archive.org/web/20050206184149/http://www.breadnmolasses.com/id26.html |archivedate=February 6, 2005 }} It also contains roughly 6 km2 of peatlands, within which are numerous freshwater ponds.{{cite web | title=Tabusintac Ramsar Site | website=inmgroup.net | date=2017-10-27 | url=http://www.inmgroup.net/tabusintac/watershed/id21.html | archive-url=https://web.archive.org/web/20171027024841/http://www.inmgroup.net/tabusintac/watershed/id21.html | archive-date=2017-10-27 | url-status=dead | access-date=2022-06-21}}