Is impact to Lake Davis trout fishery increasing/decreasing/not changing?
An examination of pike (> 16 inches) stomach contents in 2002 indicated that trout constitute about 70% of the volume of pike diet. Smaller pike do not have as many trout in their stomachs, in part because the Department only plants larger trout (>8 inches) in Lake Davis. A rough calculation of pike food requirements combined with the Lake Davis stomach content data indicates that a 16″ pike eats about 14 “catchable” size trout annually. Since it appears that the number of larger pike in Lake Davis is increasing, impact on trout will increase. 3. Is increase of natural escape of pike increasing/decreasing/not changing? Based upon the historical record, about one year in twenty (5 years in a century) would result in an uncontrolled spill at Lake Davis. As the density of pike at locations near the spillway increases, the risk of their entrainment in water going over the spillway increases. 4. Is risk of human movement of pike to other waters increasing/decreasing/not changing? As pike de
