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NWS / NWPSSite ID: LRZC1active

NWS / NWPS LRZC1

San Lorenzo Creek (Alameda) above Hayward

San Lorenzo Creek (Alameda) • Alameda • CA

Latest public reading2.72 ftObserved Jun 21, 2026 at 10:20 AM CDT
TrendFallingForecast available
Data freshness StaleObservation 132 minutes old
Flood contextNo source flood categoryFetched Timestamp unavailable

Stage and discharge

Observed source readings

Stage and discharge

Daily rollups and linked forecast values

Observed Forecast

Stage and discharge chart includes 2 observed points and 60 forecast points.

Line chart: Observed, Forecast00.511.522.532026-06-112026-06-232026-06-24
Data series

Flood-stage context

Source-published thresholds where available

Action20.85 ftSource-backed threshold
Minor flood24.64 ftSource-backed threshold
Moderate flood29.64 ftSource-backed threshold
Major flood33 ftSource-backed threshold

Forecast

Linked NWS/NWPS values

HGIFZ • stage2.72 ftValid Jun 21, 2026 at 1:00 PM CDT
HGIFZ • stage2.72 ftValid Jun 21, 2026 at 2:00 PM CDT
HGIFZ • stage2.72 ftValid Jun 21, 2026 at 3:00 PM CDT
HGIFZ • stage2.72 ftValid Jun 21, 2026 at 4:00 PM CDT
HGIFZ • stage2.72 ftValid Jun 21, 2026 at 5:00 PM CDT
HGIFZ • stage2.72 ftValid Jun 21, 2026 at 6:00 PM CDT

Observations

stage

2.72 ft

Observed Jun 20, 2026 at 7:00 PM CDT

stage

2.8 ft

Observed Jun 10, 2026 at 7:00 PM CDT

Alerts

Alerts unavailable

Alerts are shown only when the API returns a source-backed match.

Official public sources

Readings and thresholds stay tied to USGS, NOAA/NWS, or source-backed records.

Source freshness

Observed and fetched timestamps are shown separately when the API returns them.

Transparent methodology

Unavailable forecasts, alerts, and thresholds are shown as unavailable states.