SCH Number 1998072001

Project Info

Title

Mokelumne River Spawning Habitat Improvement Project

Description

The proposed project would place initially 4,000 to 5,000 cubic yards of suitably salmonid spawining gravel annually for a 3 yr period at 2 specific sites, and then provide annual supplementation of 600 to 1,000 cubic yards thereafter. The Mokelumne River is tributary to the Sacramento-San Joaquin River Delta and supports five species od anadromous fish. Fall-run Chinok salmon and steelhead trout are the primary management focus in the river. Availability of spawning gravel in this section of the Mokelumne River has been determined to be deficient because historic gold and aggregate mining operations removed hundreds of thousands of tons or gravel annually and upstream dams have reduced gravel transport to the area. This area was chosen because it is known to have supported fall-run Chinook salmon and steelhead spawning in the past and becasue the substrate is suitable for habitat improvement.

1 documents in project