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Surface Water Data Portal

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

Guadalupe watershed

Guadalupe River at Alamitos Fish Ladder

Reading 1.60 ft and 5.8 cfs. Valley Water publishes no flood threshold for this location.

Guadalupe River at Alamitos Fish Ladder plotted at latitude 37.2468 and longitude -121.8700 over Valley Water's published major-watershed layer.
Guadalupe River at Alamitos Fish Ladder at 37.2468, -121.8700, exactly as positioned in Valley Water's sensor feed. Guadalupe River is the published polygon whose name matches this portal group. 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

1.60 ft

Captured July 28, 2026 at 4:30 PM PT

  • Sensor ID 5088
  • 37.2468, -121.8700
  • 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 Guadalupe River.

  1. Guadalupe River at Alamitos Fish Ladder

    1.60 ft · 5.8 cfs · no published threshold

  2. Guadalupe River above Almaden Expwy

    2.34 ft · 1.86 cfs · 6.66 ft below threshold 1

  3. Guadalupe River at Alma Ave (Stage Only)

    3.12 ft · 0 cfs · 11.38 ft below threshold 1

  4. Guadalupe River at US-101 (USGS)

    5.12 ft · 27.5 cfs · 11.88 ft below threshold 1

  5. Guadalupe River at Montague Expwy (Stage Only)

    10.44 ft · 0 cfs · no published threshold

  6. Guadalupe River at Gold St (Stage Only)

    4.76 ft · 0 cfs · no published threshold

Sensor Notes

Record should be considered poor due to the theoretical rating and the distance between the fishladder and measurement cross-section. Flow past the station is regulated by slide gate at the head of the fish ladder.

Valley Water, sensor notes for Guadalupe River at Alamitos Fish Ladder