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Surface Water Data Portal

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

Unassigned watershed

New Chicago Marsh at Don Edwards

Reading 8.89 ft and 0 cfs. Valley Water publishes no flood threshold for this location.

New Chicago Marsh at Don Edwards plotted at latitude 37.4405 and longitude -121.9652 over Valley Water's published major-watershed layer.
New Chicago Marsh at Don Edwards at 37.4405, -121.9652, exactly as positioned in Valley Water's sensor feed. 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

8.89 ft

Captured July 28, 2026 at 4:30 PM PT

  • Sensor ID 5176
  • 37.4405, -121.9652
  • Not a flood watch sensor
  • Reporting

Flood Thresholds

Valley Water publishes no flood thresholds for this sensor. It is monitored for water supply and stream conditions rather than for flood warning.

Upstream and Downstream

Where this gauge sits on New Chicago Marsh.

  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

Sensor Notes

Installed in end of January 2026. Stage only sensor to measure tide levels. NAVD88 = Stage - 8.04

Valley Water, sensor notes for New Chicago Marsh at Don Edwards