Copeland Creek Bank Repair and Gravel Bar Removal

Copeland Creek Bank Repair and Gravel Bar Removal

Removal of accumulated sediment and blackberry thickets growing in the channel bottom along a reach of Copeland Creek in the area of the vehicular and pedestrian bridges on East Redwood Drive on the Sonoma State University campus. the gravel bar that has developed under and just downstream of, the bridges has deflected the flow into the left bank of the stream downstream of the bridges and caused substantial bank erosion. The eroded left bank, in the area extending about 60 feet downstream from the bridge, will be reconstructed and recontoured to reduce the sharp bend which has developed to a more gentle curve. Rock rip-rap will be placed to height of about three feet above the bed of the stream to establish the alignment of the low flow channel. The area between the rock rip-rap and the eroded bank will be backfilled with a clean compacted fill and heavily planted with native riparian vegetation. Sediment removed from the stream will be sorted and all gravel and rock larger than one inch in diameter will be redistributed in the streambed. Fine materials will be removed from the stream and relocated to landscape areas on the campus. Issuance of a Streambed Alteration Agreement Number 1600-2007-0230-3 is pursuant to Fish and Game Code Section 1602.

Rohnert Park

Sonoma