Whiteside Marsh
marsh and weltands in California

Whiteside Marsh is a coastal estuary marsh and wetlands on the northwestern shore of San Pablo Bay in northern Marin County, California. It is in and adjacent to the city of Novato and the Bel Marin Keys community, in the North Bay region of the San Francisco Bay Area.
Restoration
The marsh is the site of the Hamilton Wetland Restoration Project, a federal and state wetlands habitat restoration project on the closed Hamilton Army Airfield.
It is a habitat of the endangered California red-legged frog, identifiable as the name implies by distinctive red markings on the legs. It is also nesting habitat for the endangered California Least Tern.
History
Around the turn of the 19th century, marshes at the site were diked, dried out, and farmed. It was the homestead of Peter Whiteside.
Hamilton Air Force Base was built on the site in 1930. It and the subsequent Hamilton Army Airfield occupied the area until the base was closed in 1988.
See also
Natural history of Marin County, California
Wetlands of the San Francisco Bay Area
References
External links
Hamiltonwetlands.gov: Official Hamilton/Bel Marin Keys Wetlands Restoration Project website Archived April 16, 2016, at the Wayback Machine — Whiteside Marsh project.
“Whiteside Marsh” enters the record as marsh and weltands in California. Crown Archives preserves that source wording while asking what Whiteside, Marsh and marsh can confirm, complicate or overturn.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Jun 7, 2026. The linked authority identifier is Q7996258. Authority coordinates are 38.056, -122.501. None of the 1 selected statements returned an explicit reference. The first chronological checks are 1930, 1988 and 2016.
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This entry incorporates text from “Whiteside Marsh” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.