vynsane
slow-release refill
Crater Lake is isolated from surrounding streams and rivers, thus there is no inlet or outlet to the lake. Its primary input is from annual precipitation in the region. Average annual precipitation is 168 cm (66 in); average annual snowfall is 13 m (44 ft). It took approximately 250 years for the lake to fill to today's level (~1,883 m or ~6,178 ft above sea level). The lake maintains its current level because the amount of rain and snowfall equals the evaporation and seepage rate. Lake level has varied only over a range of 5 m (16 ft) in the past 100 years.
slow-release refill
Crater Lake is isolated from surrounding streams and rivers, thus there is no inlet or outlet to the lake. Its primary input is from annual precipitation in the region. Average annual precipitation is 168 cm (66 in); average annual snowfall is 13 m (44 ft). It took approximately 250 years for the lake to fill to today's level (~1,883 m or ~6,178 ft above sea level). The lake maintains its current level because the amount of rain and snowfall equals the evaporation and seepage rate. Lake level has varied only over a range of 5 m (16 ft) in the past 100 years.