Swatara Creek at Middletown
Future / Actual / Minor
OWP 2.0 WWA Modal Title
01/11/2021, 10:04 PM UTC through 01/11/2021, 10:04 PM UTC
Sender
Sent
- Downstream gauge unavailableWarning: no valid ratings curve available. Transformations to and from FEET/CFS/KCFS will not happen.No secondary data available. Transformations for Flow data and a secondary Y axis cannot be made at this time.
Traces and Thresholds Click to turn on/off display
Observed (OBS) 06/17/2025 6:15 PM EDTOfficial Forecast (FCST) 06/17/2025 10:25 AM EDTRecord: 23.3 ftLow Threshold: 0 ftCATEGORY STAGE 
Major Flooding 18 ft Moderate Flooding 15 ft Minor Flooding 11 ft Action 10 ft Reliability of the Forecast:
NOTE: Forecasts are issued routinely year-round.
Stage may be affected by ice during winter months.
National Water Model Hydrograph
Official NWS streamflow forecasts are produced by NWS hydrologic forecasters for river gauge locations using hydrologic models which are calibrated to that location. This process considers additional guidance and information, including local expertise and experience, to produce the best forecast possible. The NWM output provides supplemental guidance to NWS forecasters and should not be considered an official NWS river forecast.
Flood Impacts
- 23.29 - Flood of Record. Level of flooding associated with the remnants of Tropical Storm Lee on September 9 2011.
- 20 - Widespread flooding of structures...including the trailer park at Harborton Place and Caravan Court.
- 18 - Widespread flooding occurs. Numerous homes are affected by high water. Route 230 is affected. Flooding begins in the vicinity of Hoffer Park.
Gauge Info
| Coordinates | 40.1925, -76.7283 |
| RFC | MARFC |
| State | PA |
| WFO | CTP |
| County | Dauphin |
| Data Provider(s) | |
| US Geological Survey | USGS--Water Resources of the United States |
| USGS | 01573600 |
Gauge Location
Recent Crests
| 1. | 12.57 ft | on 04-05-2024 | (P) |
| 2. | 11.05 ft | on 12-19-2023 | (P) |
| 3. | 13.37 ft | on 02-05-2022 | |
| 4. | 13.46 ft | on 09-03-2021 | |
| 5. | 13.68 ft | on 12-26-2020 |
Recent Crests
| 1. | 12.57 ft | on 04-05-2024 | (P) |
| 2. | 11.05 ft | on 12-19-2023 | (P) |
| 3. | 13.37 ft | on 02-05-2022 | |
| 4. | 13.46 ft | on 09-03-2021 | |
| 5. | 13.68 ft | on 12-26-2020 | |
| 6. | 11.76 ft | on 09-12-2018 | |
| 7. | 16.19 ft | on 07-26-2018 | |
| 8. | 11.81 ft | on 01-14-2014 | |
| 9. | 9.97 ft | on 11-24-2011 | |
| 10. | 23.29 ft | on 09-09-2011 | |
| 11. | 12.63 ft | on 04-18-2011 | |
| 12. | 16.36 ft | on 03-12-2011 | |
| 13. | 12.67 ft | on 03-08-2011 | |
| 14. | 8.87 ft | on 10-02-2010 | |
| 15. | 8.61 ft | on 12-13-2008 |
Historic Crests
| 1. | 23.29 ft | on 09-09-2011 |
| 2. | 16.36 ft | on 03-12-2011 |
| 3. | 16.19 ft | on 07-26-2018 |
| 4. | 13.68 ft | on 12-26-2020 |
| 5. | 13.46 ft | on 09-03-2021 |
Historic Crests
| 1. | 23.29 ft | on 09-09-2011 | |
| 2. | 16.36 ft | on 03-12-2011 | |
| 3. | 16.19 ft | on 07-26-2018 | |
| 4. | 13.68 ft | on 12-26-2020 | |
| 5. | 13.46 ft | on 09-03-2021 | |
| 6. | 13.37 ft | on 02-05-2022 | |
| 7. | 12.67 ft | on 03-08-2011 | |
| 8. | 12.63 ft | on 04-18-2011 | |
| 9. | 12.57 ft | on 04-05-2024 | (P) |
| 10. | 11.81 ft | on 01-14-2014 | |
| 11. | 11.76 ft | on 09-12-2018 | |
| 12. | 11.05 ft | on 12-19-2023 | (P) |
| 13. | 9.97 ft | on 11-24-2011 | |
| 14. | 8.87 ft | on 10-02-2010 | |
| 15. | 8.61 ft | on 12-13-2008 |
Vertical Datum Table
| type | NAVD88 |
|---|---|
| major Flooding | 296.56 ft |
| moderate Flooding | 293.56 ft |
| minor Flooding | 289.56 ft |
| action | 288.56 ft |
| Latest Value | 283.74 ft |
| Gauge Zero | 278.56 ft |
Probability Information
No Images Available
Collaborative Agencies
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.