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Location Canada, Saskatchewan
Central coordinates 106o 22.83' West  51o 49.26' North
IBA criteria A4i
Area 7,600 ha
Altitude 530 - 540m
Year of IBA assessment 2008

Bird Studies Canada/Nature Canada

Site description Blackstrap Coulee is close to the town of Dundurn, and about 50 km south of Saskatoon in Saskatchewan. The coulee, which was carved by an ice age river, features a man-made, steep-sided reservoir (Blackstrap Lake), a large shallow-banked, marshy lake (Indi Lake) and wooded valley slopes. It is about 25 km long by one km wide, and also contains a channel connecting the two lakes. Two dams hold back canal water to form Blackstrap Lake, making it much less marshy than Indi Lake. Before the dams were built, the bottom of Blackstrap Coulee was farmed. The west valley slopes are covered by a mixed grass prairie with wooded draws while the east slope contains extensive aspen and shrub woods. Blackstrap Lake contains a provincial park, a ski hill, a summer camp and two townsites, Thode and Shields, each with 20 or so year-round residences on the waters edge.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Franklin's Gull Larus pipixcan non-breeding  1995  10,000 individuals  A4i  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Blackstrap Provincial Park 526 protected area contained by site 260  


IUCN habitat Habitat detail Extent (% of site)
Forest Temperate deciduous woods  10%
Grassland Steppe & dry calcareous grassland  10%
Wetlands (inland) Freshwater lakes and pools; Freshwater marshes/swamps  80%

Land use

Land-use Extent (% of site)
agriculture minor
nature conservation and research minor
rangeland/pastureland minor
tourism/recreation major
water management major

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Blackstrap Coulee. Downloaded from on 22/10/2014

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