Mississippi River at Saint Louis, MO
USGS gauge 07010000 · drainage 697,000 sq mi · observed Oct 16, 9:00 PM CDT · 20 min old
Weather alerts Official NWS
No active National Weather Service alerts were returned for this location. This is not a statement that conditions are safe.
Source: National Weather Service alerts for the gauge location, fetched Oct 16, 9:13 PM CDT.
Last 7 days Live gauge
Source: USGS Water Data API (continuous values), observed to Oct 16, 9:00 PM CDT. Shaded band: 25th to 75th percentile of USGS daily statistics for each date; dashed: median. Flow in cfs.
Gage height and flood stages Live gauge
| Measure | Gage height | Note |
|---|---|---|
| Latest gage height | 10.52 ft | Oct 16, 9:00 PM CDT |
| Action stage | 28.0 ft | 17.5 ft above the latest gage height |
| Minor stage | 30.0 ft | 19.5 ft above the latest gage height |
| Moderate stage | 35.0 ft | 24.5 ft above the latest gage height |
| Major stage | 40.0 ft | 29.5 ft above the latest gage height |
| Forecast high | 10.4 ft | Oct 17, 1:00 AM CDT |
Source: USGS Water Data API (continuous gage height), observed to Oct 16, 9:00 PM CDT. Flood stages and the forecast (dashed curve) from National Weather Service forecast point EADM7, forecast issued Oct 16, 8:35 PM CDT. Dashed horizontal lines are drawn only where they fall inside the axis; all stages are in the table.
Gauge location Mapped layer
Source: Map services and data available from U.S. Geological Survey, National Geospatial Program (USGS Topo). Map about 10 miles across, centred on the gauge at 38.6290, -90.1798.
Radar Official NWS
Source: National Weather Service radar, station KLSX. The loop is served live by the NWS and shows its own frame times.
Weather forecast Official NWS
Source: National Weather Service point forecast, updated Oct 16, 5:01 PM CDT.
Public land at this gauge Mapped layer
| Unit | Managed by | Public access |
|---|---|---|
| Gateway Arch National Park | National Park Service | Open access |
| City Arch River Park Over The Highway | City | Open access |
| Jefferson National Expansion Memorial | City | Open access |
| Riverfront Trail | City | Open access |
| Robert Baer Plaza | City | Open access |
Source: USGS Protected Areas Database (PAD-US), within about half a mile of the gauge, downloaded 2026-10-12. Mapped land is not proof of legal access.
About USGS gauge 07010000 Historical record
| Item | Value |
|---|---|
| USGS site name | Mississippi River at St. Louis, MO |
| Site type | Stream |
| Agency | U.S. Geological Survey |
| County and state | St. Louis City, Missouri |
| Drainage area | 697,000 sq mi |
| Altitude | 380 ft (NAVD88) |
| Hydrologic unit code | 071401010403 |
| Coordinates | 38.6290, -90.1798 |
| Daily mean flow record | Jan 1, 1861 to Oct 14, 2026 |
| Instantaneous flow record | Feb 22, 1988 to Oct 16, 2026 |
| Instantaneous gage height record | Oct 1, 2001 to Oct 16, 2026 |
| Annual peaks on file | 173, 1844 to 2025 |
Source: USGS Water Data API monitoring-locations and time-series-metadata, fetched Oct 16, 9:11 PM CDT.
Sources and method
- Forecasts, alerts and observations: National Weather Service. NWS material is not subject to copyright. Terms
- Data: U.S. Geological Survey. Terms
- Map services and data available from U.S. Geological Survey, National Geospatial Program. Terms
- Rain estimates and radar: NOAA and National Weather Service. Terms
- Public land: USGS Protected Areas Database of the United States. Terms
USGS daily statistics, downloaded 2026-10-12
Percentile method: trailing 24 h mean vs USGS daily percentiles for calendar date 10-16.
Percentile is estimated from USGS published daily percentiles. Readings are provisional until USGS reviews them. Not endorsed by USGS, NOAA or the National Weather Service. Not for navigation or safety-of-life decisions; the absence of an alert is not a statement that conditions are safe.