Koosharem Reservoir is a small shallow lake formed by damming Otter Creek above Grass Valley. The reservoir shoreline is privately/publicly owned and administered by the BLM and the Koosharem Irrigation Company with public access. The water level fluctuates seasonally and has a Surface Area of 310 acres. The reservoirsits at 6,995 ft. and has a max depth of 20 ft. Fishing at Koosharem can be a year round activity. Past surveys found that cutthroat and rainbow trout are showing better growth and…
Koosharem Day Use site is primarily first-come, first-served. Use the availability view to gauge how busy it is before you go.
See the map for Koosharem Day Use site's exact location and directions.
Pick your dates on the availability calendar, then reserve through the official booking link. You can also set an alert and we'll notify you if a sold-out date opens up.