Connecticut River at Middle Haddam
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) 04/07/2025 1:45 AM EDTOfficial Forecast (FCST) 04/06/2025 11:26 AM EDTCATEGORY STAGE 
Major Flooding 13 ft Moderate Flooding 10.5 ft Minor Flooding 7 ft Action 5 ft Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions
NOTE: Forecasts are issued routinely year-round.
Gauge reading affected by ocean tides.
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
- 18 - This is a serious and life threatening flood episode. Follow the direction of your local emergency management officals. If asked to evacuate, do so immediately. All flood protection measures must be rushed to completion in flood prone areas. Widespread inundation is likely from Middletown and Portland downstream through Chester, Old Lyme and Old Saybrook.
- 16.5 - This is a serious and potentially life threatening flood episode. Follow the direction of your local emergency management officals. If asked to evacuate, do so immediately. All flood protection measures must be rushed to completion in flood prone areas.
- 15 - Significant flooding will continue to impact low lying homes and businesses along the river from Wethersfield south through Middle Haddam, downstream to the mouth of the river in Old Saybrook. A portion of Route 9 will flood near the Middletown Portland railroad bridge. Follow the directions of your local emergency management officals.
Gauge Info
| Coordinates | 41.5418, -72.5531 |
| RFC | NERFC |
| State | CT |
| WFO | BOX |
| County | Middlesex |
| Data Provider(s) | |
| US Geological Survey | USGS--Water Resources of the United States |
| USGS | 01193050 |
Gauge Location
Recent Crests
| 1. | 7.44 ft | on 03-14-2024 |
| 2. | 9.98 ft | on 03-10-2024 |
| 3. | 8.22 ft | on 01-13-2024 |
| 4. | 11.20 ft | on 12-21-2023 |
| 5. | 7.15 ft | on 12-18-2023 |
Recent Crests
| 1. | 7.44 ft | on 03-14-2024 |
| 2. | 9.98 ft | on 03-10-2024 |
| 3. | 8.22 ft | on 01-13-2024 |
| 4. | 11.20 ft | on 12-21-2023 |
| 5. | 7.15 ft | on 12-18-2023 |
| 6. | 10.41 ft | on 07-13-2023 |
| 7. | 7.53 ft | on 05-04-2023 |
| 8. | 7.41 ft | on 07-20-2021 |
| 9. | 8.48 ft | on 12-28-2020 |
| 10. | 7.36 ft | on 04-16-2020 |
| 11. | 8.05 ft | on 11-06-2018 |
| 12. | 7.51 ft | on 11-01-2017 |
| 13. | 7.33 ft | on 04-15-2017 |
| 14. | 7.92 ft | on 04-09-2017 |
| 15. | 8.85 ft | on 02-28-2016 |
| 16. | 7.70 ft | on 04-17-2015 |
| 17. | 9.39 ft | on 04-17-2014 |
| 18. | 7.33 ft | on 04-02-2014 |
| 19. | 6.96 ft | on 12-10-2011 |
| 20. | 7.21 ft | on 05-20-2011 |
| 21. | 8.15 ft | on 05-02-2011 |
| 22. | 8.07 ft | on 03-22-2011 |
| 23. | 8.33 ft | on 03-14-2011 |
Historic Crests
| 1. | 11.20 ft | on 12-21-2023 |
| 2. | 10.41 ft | on 07-13-2023 |
| 3. | 9.98 ft | on 03-10-2024 |
| 4. | 9.39 ft | on 04-17-2014 |
| 5. | 8.85 ft | on 02-28-2016 |
Historic Crests
| 1. | 11.20 ft | on 12-21-2023 |
| 2. | 10.41 ft | on 07-13-2023 |
| 3. | 9.98 ft | on 03-10-2024 |
| 4. | 9.39 ft | on 04-17-2014 |
| 5. | 8.85 ft | on 02-28-2016 |
| 6. | 8.48 ft | on 12-28-2020 |
| 7. | 8.33 ft | on 03-14-2011 |
| 8. | 8.22 ft | on 01-13-2024 |
| 9. | 8.15 ft | on 05-02-2011 |
| 10. | 8.07 ft | on 03-22-2011 |
| 11. | 8.05 ft | on 11-06-2018 |
| 12. | 7.92 ft | on 04-09-2017 |
| 13. | 7.70 ft | on 04-17-2015 |
| 14. | 7.53 ft | on 05-04-2023 |
| 15. | 7.51 ft | on 11-01-2017 |
| 16. | 7.44 ft | on 03-14-2024 |
| 17. | 7.41 ft | on 07-20-2021 |
| 18. | 7.36 ft | on 04-16-2020 |
| 19. | 7.33 ft | on 04-15-2017 |
| 20. | 7.33 ft | on 04-02-2014 |
| 21. | 7.21 ft | on 05-20-2011 |
| 22. | 7.15 ft | on 12-18-2023 |
| 23. | 6.96 ft | on 12-10-2011 |
Vertical Datum Table
| type | NGVD29 |
|---|---|
| major Flooding | 13.00 ft |
| moderate Flooding | 10.50 ft |
| minor Flooding | 7.00 ft |
| action | 5.00 ft |
| Latest Value | 5.15 ft |
| Gauge Zero | 0.00 ft |
Gauge Photos
No Images Found
Unique Local Info
|
Potential River Levels Used to Estimate the Chance of Flooding and the Range of Possible River Levels |
||
| 10 Day (HEFS) | 10 Day (NAEFS) | 10 Day (GEFS) |
 |
 |
 |
Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.
Click individual graphics to enlarge.
River stage data collection for this gage began in September 2010.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.