Mason Valley WMA Access provides entry to a 17,742-acre wildlife management area in Lyon County featuring diverse habitats from desert shrub to wet meadows, with multiple fishable waters including North Pond, Bass Pond, Crappie Pond, and the Walker River accessible from February through September.

The area offers designated camping sites and vessel access on select ponds (with 5 mph speed limits), though the eastern portion of the main developed pond area is closed February 15-August 15 for wildlife protection.

Hunting and trapping are permitted with specific seasonal restrictions, and the area provides excellent opportunities for wildlife viewing and outdoor recreation.