River levels near Hillsborough, California
1 of 7 gauges have both a usable water-level reading and a published minor flood stage. Readings may be delayed; check the observation time on each gauge page. This summary does not establish whether streets or unmonitored waterways near Hillsborough are flooding.
Pilarcitos C a Half Moon Bay CAPilarcitos C below Spillway near Hillsborough CAPilarcitos C above Stone Dam near Hillsborough CAPilarcitos C below Stone Dam near Hillsborough CASan Mateo C above Junction Box a Dam1 near HillsboroughSan Mateo C below Junction Box a Dam1 near HillsboroughSan Mateo C below Lo Crystal Sp Reservoir near San Mateo CAProvisional 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.