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USGSSite ID: 05501600active

USGS 05501600

Mississippi River at Hannibal, MO

Mississippi River • Marion County • MO

Latest public reading10.07 ftObserved Sep 9, 2026 at 4:15 PM CDT
TrendFallingForecast available
Data freshnessStaleBeyond three times the publishing interval. Value shown with its age, never hidden.Observation 990 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 3 observed points and 53 forecast points.

Line chart: Observed, Forecast024681012142026-08-182026-09-202026-09-23
Data series

Flood-stage context

Source-published thresholds where available

Action15 ftSource-backed threshold
Minor flood17 ftSource-backed threshold
Moderate flood22 ftSource-backed threshold
Major flood24 ftSource-backed threshold

Forecast

Linked NWS/NWPS values

HGIFF • stage9.9 ftValid Sep 10, 2026 at 1:00 PM CDT
HGIFF • stage9.9 ftValid Sep 10, 2026 at 7:00 PM CDT
HGIFF • stage9.9 ftValid Sep 11, 2026 at 1:00 AM CDT
HGIFF • stage10 ftValid Sep 11, 2026 at 7:00 AM CDT
HGIFF • stage10 ftValid Sep 11, 2026 at 1:00 PM CDT
HGIFF • stage10.1 ftValid Sep 11, 2026 at 7:00 PM CDT

Observations

stage

10.07 ft

Observed Sep 8, 2026 at 7:00 PM CDT

stage

9.66 ft

Observed Sep 1, 2026 at 7:00 PM CDT

stage

13.87 ft

Observed Aug 17, 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.