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Surface Water Data Portal

Demo snapshot · July 28, 2026 at 4:53 PM PT · not current conditions

Precipitation, Page 1

Rainfall

48 rain gauges across the county, ordered by season total. The season runs from October, which is how the water year is counted here.

24 rain gauges listed on page 1, plotted at their published coordinates; marker size follows water-year rainfall.
The 24 rain gauges in this page of the index. Larger diamonds indicate a higher season total since October. 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.
  • Rain gauge

Showing 1–24 of 48 rain gauges.

Rainfall at every reporting gauge, ordered by season total
GaugeWatershed1 hour6 hours24 hoursSeason
Mt Umunhum Guadalupe 0.00 in 0.00 in 0.00 in 49.53 in
Valley Christian West Valley 0.00 in 0.00 in 0.00 in 42.05 in
Loma Prieta Pajaro 0.00 in 0.00 in 0.00 in 41.61 in
Uvas Canyon County Park Pajaro 0.00 in 0.00 in 0.00 in 41.30 in
Los Trancos Lower Peninsula 0.00 in 0.00 in 0.00 in 40.87 in
Guadalupe Watershed Guadalupe 0.00 in 0.00 in 0.00 in 38.11 in
Wunderlich (JPA) Lower Peninsula 0.00 in 0.00 in 0.00 in 37.36 in
Lexington Reservoir (Banjo Point) Guadalupe 0.00 in 0.00 in 0.00 in 34.92 in
Windy Hill (JPA) Lower Peninsula 0.00 in 0.00 in 0.00 in 34.17 in
Huddart Park (JPA) Lower Peninsula 0.00 in 0.00 in 0.00 in 33.66 in
Almaden Watershed Guadalupe 0.00 in 0.00 in 0.00 in 33.39 in
Trappers Trail Lower Peninsula 0.00 in 0.00 in 0.00 in 30.59 in
Coe Park Coyote 0.00 in 0.00 in 0.00 in 29.76 in
Stevens Creek Reservoir Lower Peninsula 0.00 in 0.00 in 0.00 in 28.31 in
Rancho San Antonio Lower Peninsula 0.00 in 0.00 in 0.00 in 26.81 in
Mt Hamilton Coyote 0.00 in 0.00 in 0.00 in 26.77 in
Johnson Ranch Guadalupe 0.00 in 0.00 in 0.00 in 24.88 in
Cow Ridge Coyote 0.00 in 0.00 in 0.00 in 24.72 in
Uvas Reservoir Pajaro 0.00 in 0.00 in 0.00 in 23.98 in
Haskins Ranch Coyote 0.00 in 0.00 in 0.00 in 22.09 in
Rinconada WTP Guadalupe 0.00 in 0.00 in 0.00 in 21.69 in
Coit Ranch Coyote 0.00 in 0.00 in 0.00 in 21.10 in
Castro Valley Pajaro 0.00 in 0.00 in 0.00 in 20.59 in
Canada de los Osos Pajaro 0.00 in 0.00 in 0.00 in 20.43 in