Fifty percent, or 1,000 acres, of Elkhorn Slough’s salt marshes have been lost over the past 150 years due to human actions. Marsh loss and estuarine habitat erosion in Elkhorn Slough is currently ongoing with channel bank erosion rates from 1 to 2 feet per year and interior marsh dieback rates of at least 3 acres per year. These rapid changes not only affect the estuary’s animals and plants, but also impact public access sites and railroad and road infrastructure. In addition, Elkhorn Slough’s estuarine habitats suffer from subsidence, degraded water quality conditions, and invasion of non-native species.

Fact Sheet: Why Restore Elkhorn Slough? (pdf, 1.82MB)

Fact Sheet: Tidal Wetland Project and the Proposed Parsons Slough Restoration Project (pdf, 1.25MB)

Download the final Philip Williams and Associates report on the projected effects of major actions on Elkhorn Slough hydrodynamics, geomorphology and habitats.

Download the Elkhorn Slough Tidal Wetland Project Strategic Plan. This document describes Elkhorn Slough’s estuarine habitats, characterizes the main impacts causing loss and degradation of those habitats, and provides conservation and restoration recommendations.

Yampah marsh loss – note anoxic soil chemestry conditions

Bank erosion causing damage to Moss Landing State Beach parking lot