From Wyoming Game & Fish
We conducted standard fall gillnetting of Seminoe Reservoir in September of 2002. Numbers of rainbow trout in our nets increased from 2001 sampling while walleye numbers remained about the same.
Rainbow trout averaged 14.8 inches and 1.2 pounds and walleye averaged 14.7 inches and 1.5 pounds. The largest rainbow we saw was 18.8 inches and 2.0 pounds and the largest walleye was 28.9 inches and 10.5 pounds.
One concern we have with the Seminoe Reservoir fishery is the decline in rainbow trout and walleye condition or relative weight (Wr). Both rainbow trout and walleye were significantly “skinnier” in 2002 than 2001.
It appears that the drought conditions are having an impact on this fishery also. Low reservoir water levels tend to decrease food production and at the same time concentrate fish and increase competition for the available food.