Snow and Salmon Creeks used to flow together into an extensive brackish and saltmarsh wetland before entering Discovery Bay. At some point early in the 20th Century Snow Creek was diverted from it's central location in the valley floor up to the eastern edge of the valley floor and then out onto Discovery Bay mudflats. The results have been an unstable and aggrading estuary, altered sedimentation and freshwater hydrology, and recurring flooding in the valley as Snow Creek jumps back into it's old channel at high flows. If it is determined that the benefits would be significant for salmon recovery, and the obstacles of landowner impacts and the SR101 bridge capacity can be overcome, this study would lay out a preferred alternative for restoring stream connectivity.

UPDATE: The attached document provides information on hydraulic analysis completed by WDFW that suggests that the current Salmon Creek bridge under SR101 could not support the full extreme flow events from a combined Snow and Salmon Creeks without backwatering into private property. There are also concerns of effects on Snow Creek property owners if the stream was relocated away from their properties. This project is on hold.