Coyote Creek, located in Marin County, flows approximately 9 miles from its headwaters in the hills near Mount Tamalpais to its confluence with San Pablo Bay. The watershed spans roughly 22 square miles and receives an average of 30 to 40 inches of annual rainfall, concentrated during the winter months.

The estuary features a mix of tidal wetlands and marsh habitats, which support a variety of wildlife, including waterfowl, fish, and other aquatic species. The area is also influenced by tidal dynamics and sedimentation processes, with adjacent urban and agricultural landscapes facing periodic flooding risks during high tides and storms.

Real-time water level monitoring in Coyote Creek provides critical data on tidal fluctuations, flooding patterns, and sea-level rise impacts. This information helps inform flood management, guide habitat restoration, and support the resilience of this vital estuarine ecosystem in Marin County.