Water Level Management
In 1977, the water level management regime was altered to allow gradual summer draw-downs (0.76 m/yr) to clean spawning shoals and reduce midsummer algal blooms. Fall and winter water levels were stabilized by mid-late September each year. This resulted in increased walleye spawning activity on traditional spawning sites. Since 1982, summer water draw-downs were modified in response to adverse public reaction to the previous water level management regime.
In the fall of 1991, a mail survey of shoreline residents and lake users was conducted by MNR to identify the most desired water level management regime. Three options (moderate summer draw-down, severe summer draw-down, and total summer stabilization) were presented. The majority of respondents favoured the moderate summer draw-down option which essentially confirmed the water level management regime which had been in place. This option seemed to represent the best compromise for boating, fisheries management and other interests. Under this scenario, it was recognized that walleye stocks would probably continue to decline and the lake would shift predominantly to a northern pike-largemouth bass sport fishery.
The above document cites the history of White Lake water levels starting in 1860 up to 1984. The information is anecdotal in nature, but written by Mr. Evan R. Thomas, a fish biologist working for the government.