New website by Stoa. Not the official Valley Water website.

Surface Water Data Portal

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

Watershed

Other Sensors

Sensors Valley Water's feed does not assign to one of the five watersheds.

5 stream gauges · 0 rain gauges · 0 reservoirs

Other Sensors portal-group sensors plotted at their published coordinates over Valley Water's major-watershed polygons.
5 stream, 0 rain, and 0 reservoir sensors assigned to the Other Sensors portal group, plotted at their issued coordinates. The published layer contains no polygon named Other Sensors, so none is highlighted. The eleven published polygons do not exactly match the portal's five sensor groups and do not provide a boundary for every named creek.
  • Stream gauge
  1. San Francisquito
  2. Adobe
  3. Permanente
  4. Sunnyvale West
  5. Sunnyvale East
  6. Calabazas
  7. San Tomas
  8. Guadalupe River
  9. Coyote
  10. Uvas
  11. Llagas

Ridge to Bay

Each creek is drawn top to bottom in the order the water runs. The bar beside each gauge is filled to its captured stage on that gauge's own local scale; the dashed rules across it are the flood thresholds Valley Water publishes for that location.

New Chicago Marsh

2 gauges, ordered south to north down the creek

  1. New Chicago Marsh at Alviso

    9.66 ft · 0 cfs · no published threshold

  2. New Chicago Marsh at Don Edwards

    8.89 ft · 0 cfs · no published threshold

Other Gauges Here