This natural intermittent lake is augmented by oil field produced water to form a wetland marsh and shallow lake habitat of approximately 850 acres. Prairie grassland and shrub communities surround the lake and the adjacent rock hills and cliffs provide raptor-nesting habitat. Because the site exists in a ?high desert? ecosystem, Loch Katrine is the most productive lacustrine complex in Wyoming?s Big Horn Basin and supports a diverse community of migratory and nesting waterfowl and shorebirds. The area produces an estimated 100-150 broods of waterfowl and 50-100 broods of shorebirds on a "normal year" and is considered to have an above average reproductive success rate

Ornithological Summary

The surrounding prairie grasslands and rocky ridges provide important habitat to several priority species for Wyoming. Some priority bird species that occur on the site include:
Priority Species:
Peregrine Falcon Brewer?s Sparrow
Bald Eagle Marsh Wren
Golden Eagle Northern Sage-grouse
Ferruginous Hawk McCown?s Longspur
Swainson?s hawk Lark Bunting
White-faced Ibis Mountain Plover
Long-billed Curlew Prairie Falcon
American White Pelican Burrowing Owl
Trumpeter Swan Merlin
Forster?s Tern

Conservation Issues

The wetlands experience both seasonal and yearly fluctuations due to changes in precipitation and evaporation rates. Current habitat is also dependent on produced water which could stop at some future time.
Low to slight risks of diseases due to low water levels and high numbers of birds during migrations.
Some chance of partial contamination from oil spill - protective structures are in place.


Public lands managed by BLM, Cody Field Office.


Loch Katrine is a closed basin wetland located within Oregon Basin, an 18 square mile closed basin drainage. A natural intermittant lake is augment by oil field produced water to form a wetland marsh and shallow lake habitat area of approximately 850 acres surrounded by prairie grassland and shrub commonities. Adjacent rocky sedimentary rock hills provide raptor and cliff nesting habitat. The wetland supports a bulrush and cattail marsh vegetation type and open water/shallow mudflats habitat.

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