Susquehanna River at Marietta, PA
USGS gauge 01576000 · drainage 25,990 sq mi · observed Oct 16, 9:15 PM EDT · 65 min old
Weather alerts Official NWS
Freeze Watch issued October 16 at 9:09PM EDT until October 18 at 9:00AM EDT by NWS State College PA
Ends Oct 18, 9:00 AM EDT
Source: National Weather Service alerts for the gauge location, fetched Oct 16, 10:16 PM EDT.
Last 7 days Live gauge
Source: USGS Water Data API (continuous values), observed to Oct 16, 9:15 PM EDT. 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 | 35.56 ft | Oct 16, 9:15 PM EDT |
| Action stage | 44.0 ft | 8.4 ft above the latest gage height |
| Minor stage | 49.0 ft | 13.4 ft above the latest gage height |
| Moderate stage | 52.0 ft | 16.4 ft above the latest gage height |
| Major stage | 54.0 ft | 18.4 ft above the latest gage height |
| Forecast high | 35.9 ft | Oct 17, 8:00 AM EDT |
Source: USGS Water Data API (continuous gage height), observed to Oct 16, 9:15 PM EDT. Flood stages and the forecast (dashed curve) from National Weather Service forecast point MRTP1, forecast issued Oct 16, 10:41 AM EDT. 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 40.0545, -76.5308.
Radar Official NWS
Source: National Weather Service radar, station KLWX. 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, 9:21 PM EDT.
Public land at this gauge Mapped layer
| Unit | Managed by | Public access |
|---|---|---|
| Front Street (Tract Two) Park | Unknown manager | Open access |
| Front Street (Tract Two) Park | Unknown manager | Open access |
| Front Street Park | Unknown manager | Open access |
| Marietta Borough Open Space | Unknown manager | Open access |
| Chickies Rock County Park | Unknown manager | 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 01576000 Historical record
| Item | Value |
|---|---|
| USGS site name | Susquehanna River at Marietta, PA |
| Site type | Stream |
| Agency | U.S. Geological Survey |
| County and state | Lancaster County, Pennsylvania |
| Drainage area | 25,990 sq mi |
| Altitude | 201 ft (NGVD29) |
| Hydrologic unit code | 020503061702 |
| Coordinates | 40.0545, -76.5308 |
| Daily mean flow record | Oct 1, 1931 to Oct 14, 2026 |
| Instantaneous flow record | Oct 1, 1985 to Oct 16, 2026 |
| Instantaneous gage height record | Oct 1, 2007 to Oct 16, 2026 |
| Annual peaks on file | 99, 1889 to 2024 |
Source: USGS Water Data API monitoring-locations and time-series-metadata, fetched Oct 16, 10:12 PM EDT.
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.