With a man-made obstruction this would be a reservoir, not a lake. The shoreline would not rise and fall with season so grooming is easier.
Saturday, October 30, 2021
45.4396472, -122.823625
google map 
45.4398639, -122.8247528
45.4400472, -122.8256917
BOUNDARY 45.4388333, -122.8266205
BOUNDARY 45.4409039, -122.8225095
Water Science School.
Lakes and Reservoirs. usgs
