Hydrology of Crater, East and Davis Lakes, Oregon by Kenneth N. Phillips
WATER LOSS FROM THE LAKE
East Lake loses water by evaporation and by seepage. In this report, the -annual loss by evaporation is estimated and is assumed to be the same in each year. The seepage loss is assumed to be at a rate that will balance the water budget not only in a period of average precipitation, but in wet and dry periods after adjustment for observed changes in lake volume.