Weather gauges

Marin County OneRain website includes links to data that can be used to track and plan for flood events. It also provides links to weather information and tides.

Upgrades to County rain and stream gauges

In 2015 the District received a Flood Emergency Response Program (FERP) Grant to upgrade all its existing stream and rain gauges. This funding also allowed us to put gauges in new sites, doubling size of our network.

New sites

  • Zone 1: Novato
  • Zone 3: Mill Valley
  • Zone 4: Bel Aire (Tiburon)
  • Zone 9: Ross Valley
  • Civic Center (near Zones 6 and 7 – Santa Venetia, Rafael Meadows and Redwood Village)

The new gauges improve available data for studies and situational awareness in storms.


The District makes no representation or warranty, express or implied, with respect to data accuracy, completeness, timeliness, reliability, quality, or usefulness. Data are provided “as-is” and should not be relied upon for making critical decisions. The District assumes no liability for any damage to or loss of property, or personal injury or loss of life, which may arise out of use of data.

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