San Mateo C below Junction Box a Dam1 near Hillsborough

San Mateo County, California · USGS gauge 11162737 · NWS BJBC1 · San Mateo Creek flood status · California river levels

Nearby: river levels near Hillsborough

Is San Mateo C below Junction Box a Dam1 near Hillsborough flooding right now?

San Mateo C below Junction Box a Dam1 near Hillsborough measured 0.30 ft on 2026-09-11 01:15:00 UTC. No NWS minor flood stage is published for this gauge.

Gauge height
0.30 ft
as of 65 min ago
Streamflow
data refreshed 2 min ago

No National Weather Service flood stage is published for this gauge, so no flood category can be shown — why some gauges have no flood stage.

Last 7 days

Past 7 days · 0.25–0.38 ft

Nearby gauges

GaugeDistanceCounty
San Mateo C above Junction Box a Dam1 near Hillsborough0.1 miSan Mateo County
Pilarcitos C below Spillway near Hillsborough CA0.6 miSan Mateo County
Pilarcitos C above Stone Dam near Hillsborough CA2.1 miSan Mateo County
Pilarcitos C below Stone Dam near Hillsborough CA2.4 miSan Mateo County
San Mateo C below Lo Crystal Sp Reservoir near San Mateo CA3.7 miSan Mateo County
Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.

Sources: USGS monitoring location · NWS gauge & forecast