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May is American Wetlands Month

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In 1991, the Environmental Protection Agency (EPA) created American Wetlands Month. Every May, the public is encouraged to celebrate and learn about the value of wetlands in our communities. Wetlands are renowned for their ability to remove excess nutrients, toxic substances, and sediment from water that flows through them, helping to improve downstream water quality and the overall health of waters in our communities.

Moorhen Marsh is a 21-acre constructed wetland and was the first of its kind on the west coast as its primary water source is dependent solely on the treated wastewater or effluent from Mt. View Sanitary District. Moorhen Marsh discharges to the Peyton Slough Wetlands Complex and enters the historical marsh, McNabney. McNabney Marsh is 138 acres and was re-exposed to tidal action in 2009. Both marshes provide critical habitat for native plants and wildlife.

We encourage you to explore the wetlands right here in our backyard! The McNabney Marsh Observation Platform is open Monday-Saturday 7 am-4:30 pm and Moorhen Marsh is open by appointment only. Appointments can be made with the Public Outreach Coordinator, Robin Mitchell at or 925-228-5635.

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