Robin Harvey wrote a brief but very nice report on the history of the lake level, and you can see it HERE. The web site mentioned is HERE. Use it, for example, to see how much rain fell yesterday or this week, and how much the lake level rose as a result.
The lake was stocked with about 500 rainbow trout today from the Nisqually Trout Farm in Lacey. The fish averaged 12" long and 1lb in weight, so the plant cost us about $2 per pound. We usually stock the lake three times per year, before Memorial Day, the fishing derby, and Labor Day. By the way, the trout like the south end of the lake near the water discharge which makes the water richer in oxygen and lowers the temperature. Trout do not like water temperatures above about 75°, so deeper, cooler water attracts them. Good fishing!
Since Lake Minterwood was created the lake level has dropped about three feet. Estimates to repair the likely leaks were in six figures, and the Board of Trustees installed a weather station to monitor all the factors, in addition to leaks, affecting the lake level. You can view the real time and historical results of this station HERE.