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USGSSite ID: 01646500active

USGS 01646500

Potomac River near Washington, DC

Potomac River • Fairfax • VA

Latest public reading2,750 cfsObserved May 14, 2026 at 11:50 PM CDT
TrendFallingNo forecast linked
Data freshness StaleObservation 31409 minutes old
Flood contextThresholds linkedFetched Timestamp unavailable

Stage and discharge

Observed source readings

Stage and discharge

Daily rollups and linked forecast values

Observed

Stage and discharge chart includes 7 observed points.

Line chart: Observed05001.0K1.5K2.0K2.5K3.0K3.5K2026-05-072026-05-092026-05-112026-05-15
Data series

Flood-stage context

Source-published thresholds where available

Action7 ftSource-backed threshold
Minor flood10 ftSource-backed threshold

Forecast

Linked NWS/NWPS values

Forecast unavailable

Forecasts are not available for this gauge in RiverStat.us launch sources.

Observations

flow

2,750 cfs

Observed May 14, 2026 at 7:00 PM CDT

flow

2,650 cfs

Observed May 12, 2026 at 7:00 PM CDT

flow

2,850 cfs

Observed May 10, 2026 at 7:00 PM CDT

discharge

2,900 cfs

Observed May 9, 2026 at 7:00 PM CDT

discharge

3,010 cfs

Observed May 8, 2026 at 7:00 PM CDT

discharge

3,230 cfs

Observed May 7, 2026 at 7:00 PM CDT

discharge

3,450 cfs

Observed May 6, 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.