Corte Madera Creek at Ross
Marin County, California
The past week
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What floods at each level
- 23 ft
Major Flood Stage. (Stage of 25.5 for co-located County ALERT stream gage.) Major flood inundation in town; travel along local roadways likely impossible and very dangerous. Major damage to local businesses and homes. Water is above guard rail on Lagunitas Road bridge.
- 20 ft
Moderate Flood Stage. (Stage of 22.5 for co-located County ALERT stream gage.) Lagunitas Road bridge is overtopped, and 1 to several feet of flood waters inundate local businesses, residences, and roadways.
- 17 ft
Minor Flood Stage. (Stage of 19.5 feet for co-located County ALERT stream gage.) Backwatering begins at Lagunitas Road bridge, with minor flooding near Town Hall and Fire Station. NWS will issue a Flash Flood Warning if not yet already issued.
- 15 ft
Action Stage. (Stage of 17.5 for co-located County ALERT stream gage.) Water level is 2 feet below Lagunitas Road bridge soffit, and less than 2 feet below local storm drain inlets on adjacent roads and parking lots. NWS will issue a Flash Flood Watch if not yet already issued.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Dec 31, 2005 | 22.59 ft | — |
| Jan 3, 1982 | 19.81 ft | 7,200 cfs |
| Feb 16, 1986 | 18.07 ft | 4,150 cfs |
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