Past Water Levels 

Comparing the levels before and after the project was built by eye it appears the maximums are similar and the minimums now are lower. Doing the same but comparing average levels on June1, July1, August 1 and September 1 in the chart below the levels since the project was built have been just a little higher despite an average annual inflow 2.7 times what it was before 1977.                                        

This chart shows how variable the spring runoff has been. Volume is measured in acre-feet, one acre foot is an acre covered by a foot of water. For example the total inflow to the lake in 2026 until May 15, the date of the peak level was about 10,300 acre-feet or equivalent to 10,300 acres covered by a foot of water. This has an annual probability of 33% or on average expected to be equaled or exceeded once every three years based on the record since 1962. If using just the record since the project was built the probability of being exceeded would be close to 50%.