I-280

Named in 7 flood threshold descriptions published by Valley Water.

The Gauge Relationship

Every quotation below is Valley Water's own text, unedited. The captured reading and exact distance to the first threshold that names this place come before the map, so the resident answer is not hidden behind geography.

San Tomas Creek above Williams Rd

West Valley watershed · captured reading 0.51 ft · first named at threshold 3, 6.4 ft

At the captured reading, this creek is 5.89 feet below the level where I-280 is named.

Spills upstream of Willliams Road move toward the west and move northward along Boynton Avenue, ponding along I-280.
Valley Water, threshold 3 description for San Tomas Creek above Williams Rd

San Tomas Expwy flooded, with water moving northward under the I-280 viaduct toward Homestead.
Valley Water, threshold 4 description for San Tomas Creek above Williams Rd

Stevens Creek below Stevens Creek Reservoir

Lower Peninsula watershed · captured reading 2.15 ft · first named at threshold 3, 9.5 ft

At the captured reading, this creek is 7.35 feet below the level where I-280 is named.

Homes between I-280 and Stevens Creek Blvd at risk of structure damage due to flooding on the streets and throughout the neighborhood within the floodplain.
Valley Water, threshold 3 description for Stevens Creek below Stevens Creek Reservoir

Los Gatos Creek at Lincoln Ave

Guadalupe watershed · captured reading 4.95 ft · first named at threshold 3, 20 ft

At the captured reading, this creek is 15.05 feet below the level where I-280 is named.

Widespread overbanking between West San Carlos Street and I-280, as well as between West San Fernando Street and Park Avenue.
Valley Water, threshold 3 description for Los Gatos Creek at Lincoln Ave

Entire creek reach from I-280 to the confluence with Guadalupe River is spilling at multiple locations.
Valley Water, threshold 4 description for Los Gatos Creek at Lincoln Ave

Ross Creek at Cherry Ave

Guadalupe watershed · captured reading 2.53 ft · first named at threshold 4, 12 ft

At the captured reading, this creek is 9.47 feet below the level where I-280 is named.

Waters may move past Hillsdale Ave, continuing northwards to the CA-87 and I-280 interchange.
Valley Water, threshold 4 description for Ross Creek at Cherry Ave

Los Gatos Creek at Lark Ave

Guadalupe watershed · captured reading 1.51 ft · first named at threshold 3, 10 ft

At the captured reading, this creek is 8.49 feet below the level where I-280 is named.

Areas adjacent to Los Gatos Creek downstream of I-280 through downtown San Jose at risk.
Valley Water, threshold 3 description for Los Gatos Creek at Lark Ave

Gauge Location

5 stream gauges whose Valley Water threshold descriptions name I-280. — The point marks the gauge locations whose published threshold text names I-280; it does not claim a coordinate for the street or landmark. All eleven polygons in Valley Water's published major-watershed layer are shown. The eleven published polygons do not exactly match the portal's five sensor groups and do not provide a boundary for every named creek.

A place named here is not a flood prediction. It is what Valley Water records as at risk when a creek reaches that level. For an emergency, call 911.

Get an alert when one of these gauges crosses a threshold