Waskerley Reservoir

{{Short description| A reservoir in County Durham, England}}

{{Use British English|date=August 2020}}

{{Use dmy dates|date=September 2019}}

{{Infobox body of water

| name = Waskerley Reservoir

| image =Waskerley Reservoir - geograph.org.uk - 1130280.jpg

| caption =Waskerley Reservoir

| alt = A shot across snowy moorland of an upland lake

| image_bathymetry =

|pushpin_map=County Durham

| caption_bathymetry =

| location = County Durham, England

| coords = {{Coord|54|47|33|N|1|58|00|W|type:waterbody_region:GB|display=inline,title}}

| type = reservoir

| inflow =

| outflow =

| catchment = {{convert|15|km2|abbr=on}}{{cite web|url=http://www.britishdams.org/2006conf/site_visits_description.pdf|title=British Dam Society - Durham Conference 2006|publisher=British Dam Society|accessdate=10 February 2011}}

| agency=Northumbrian Water

| length =

| width =

| area =

| depth =

| max-depth = {{convert|24.3|m|abbr=on}}

| volume = {{convert|2.0|e6m3|acre.ft|abbr=out}}

| residence_time =

| shore =

| elevation = {{convert|355|m|abbr=on}} asl

| frozen =

| islands =

| cities =

}}

Waskerley Reservoir is the largest of a group of three reservoirs located on Muggleswick Common, County Durham, with the others being Smiddy Shaw and Hisehope Reservoirs.

The reservoir, which was constructed in 1877, is owned and operated by Northumbrian Water.Waskerley, Smiddyshaw, Hisehope (pdf downloadable at {{cite web |url=http://www.nwl.co.uk/EnvironmentMap.aspx |title=Our region |publisher=Northumbrian Water |accessdate=11 February 2011}}) It and Smiddy Shaw—which in turn is fed by Hisehope—feed water under gravity to a water treatment works at Honey Hill.{{cite web |url=http://www.nwl.co.uk/waterresmanplanSEA.aspx |title=Final Water Resources Management Plan 2010-2035 |publisher=Northumbrian Water Ltd |accessdate=3 February 2011 |archive-date=19 April 2011 |archive-url=https://web.archive.org/web/20110419060210/http://www.nwl.co.uk/waterresmanplanSEA.aspx |url-status=dead }}) Because the three reservoirs cannot meet the full demand of Honey Hill, Waskerley can be replenished by a gravity feed from Burnhope Reservoir or, if necessary, by pumping water from the Tyne-Tees Tunnel via an airshaft.

Waskerley and its two neighbouring reservoirs are located within the Muggleswick, Stanhope and Edmundbyers Commons and Blanchland Moor Site of Special Scientific Interest, which itself forms part of the North Pennines Area of Outstanding Natural Beauty.