Regular Recreational Dam Removal

Fisheries Resource Volunteer Corps (FRVC) is committed to protecting and preserving the wild trout streams and rivers in the Angeles and San Bernardino National Forests. One of the ways we do this is through our efforts to remove recreational dams built by visitors. These dams, which are often made of large boulders and logs, sandbags, plastic tarps, and carpeting, create a number of problems for the stream and the fish that live in it.

Recreational dams create barriers for fish to migrate up and downstream, altering the way the stream system works and creating pools and riffles. They also reduce the water flow and impact bank and riparian habitat through scouring. This can lead to reduced oxygen levels in the water, increased water temperature, and stress for fish and other aquatic species. Additionally, trash often collects in dams, creating unsanitary conditions for humans and wildlife.

Despite the negative impact they have on the stream, we understand the desire for visitors to have a place to play and swim. That's why we make sure to inform visitors of the impact that dams have on the health of the stream and remind them that these streams provide a significant amount of our household water. Additionally, each forest has specific "Spawning Periods" for certain fish species during which dam removal is prohibited, such as the Santa Sucker, Speckled Dace, and Arroyo Chub.

In the Angeles Forest, the spawning period is from February 1st to September 10th, and in the San Bernardino Forest, it's from January 1st to June 1st. We encourage volunteers to join us in our efforts to remove these recreational dams and learn about the importance of preserving these streams for the fish and other wildlife that call them home, as well as for the recreational use of everyone.