Hydrology of Crater, East and Davis Lakes, Oregon by Kenneth N. Phillips
WATER SUPPLY TO THE LAKE
PRECIPITATION ON THE LAKE
The average annual precipitation on the lake has been estimated for this report at 36 inches. The infalling volume in a season depends not only upon the precipitation but upon the area of the lake at the time when it falls; the average volume is probably between 6,000 and 10,000 acre-feet per year, or 5 to 9 percent of the average annual water supply.