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Location Canada, Alberta
Central coordinates 111o 50.02' West  50o 3.66' North
IBA criteria A4i
Area 1,000 ha
Altitude 0
Year of IBA assessment 2008

Bird Studies Canada/Nature Canada

Site description Hays Reservoir is located about halfway between Medicine Hat and Lethbridge in southern Alberta. It is an artificial reservoir with five small islands that are used by colonial nesting birds. The reservoir contains little marsh development, but it is surrounded by native mixed grassland habitat. An irrigation canal feeds the reservoir. The nationally vulnerable Great Plains Toad was reported breeding at this site in 1982.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
American White Pelican Pelecanus erythrorhynchos breeding  1998  3,850 nests  A4i  Least Concern 


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Freshwater lakes and pools  -

Land use

Land-use Extent (% of site)
water management major

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Hays Reservoir. Downloaded from on 21/10/2014

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