A large lake (188 Mi²/487 km²) in Western Nevada, the terminus of the Truckee River rising in the Sierra Nevada and flowing out of Lake Tahoe.
Since the lake has no outlet, salt and other soluble minerals accumulate. Currently the water is 1/6 as salty as sea water.
This is the largest remnant of Lake Lahontan that formed during ice ages, reaching an area of 8,500 Mi².
Flora and fauna
The large lake that does not freeze in winter has a moderating effect that reduces seasonal and diurnal variations. Due to the open water, temperatures tend to remain above freezing when it is significantly colder away from the lake. Likewise the water moderates summer heat.
Guided Fly Fishing Adventures at Pyramid Lake with Jay Clark Fly Fishing (www.jayclarkflyfishing.com)