Allegheny River at C.W. Bill Young Lock and Dam

NWS / NWPSSite ID: acmp1active

NWS / NWPS acmp1

Allegheny River • Allegheny • PA

Latest public reading12.56 ftObserved May 14, 2026 at 11:45 AM CDT

TrendRisingForecast available

Data freshnessStaleBeyond three times the publishing interval. Value shown with its age, never hidden.Observation 216 minutes old

Flood contextNo source flood categoryFetched Timestamp unavailable

Stage and discharge

Observed source readings

Daily rollups and linked forecast values

Observed Forecast

Source-published thresholds where available

Action15 ftSource-backed threshold

Minor flood17 ftSource-backed threshold

Moderate flood20 ftSource-backed threshold

Major flood23 ftSource-backed threshold

Linked NWS/NWPS values

HPIFF • stage10.4 ftValid Sep 3, 2026 at 7:00 AM CDT

HPIFF • stage10.4 ftValid Sep 3, 2026 at 1:00 PM CDT

HPIFF • stage10.5 ftValid Sep 3, 2026 at 7:00 PM CDT

HPIFF • stage10.5 ftValid Sep 4, 2026 at 1:00 AM CDT

HPIFF • stage10.5 ftValid Sep 4, 2026 at 7:00 AM CDT

HPIFF • stage10.5 ftValid Sep 4, 2026 at 1:00 PM CDT

stage

10.41 ft

Observed Sep 2, 2026 at 7:00 PM CDT

stage

11.8 ft

Observed Aug 24, 2026 at 7:00 PM CDT

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

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

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

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