Sudbury River at Saxonville
Flood Watch
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
- Upstream gauge unavailableDownstream gauge unavailableWarning: no valid ratings curve available. Transformations to and from FEET/CFS/KCFS will not happen.
Traces and Thresholds Click to turn on/off display
Observed (OBS) 06/06/2025 3:15 PM EDTOfficial Forecast (FCST) 06/06/2025 11:03 AM EDTRecord: 14 ftCATEGORY STAGE 
Major Flooding 13 ft Moderate Flooding 12 ft Minor Flooding 10 ft Action 8.5 ft Reliability of the Forecast:
NOTE: Forecasts are issued routinely year-round.
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
- 15 - Significant flooding occurs along the river, especially in Wayland and Concord. In Wayland portions of Route 20 both west and east bound as well as Route 27, Old Sudbury Road, will be impacted. In Concord Nashawtuc Road, Sudbury Road and Route 117 will be heavily impacted. This is a serious, potentially life threatening situation. Follow the directions of local officials if you are asked to evacuate. Do not go sightseeing and stay away from river banks which can give way due to erosion.
- 13.5 - Significant flooding occurs along the river, espeically in Wayland and Concord. In Wayland, portions of Route 20 both west and east bound as well as Route 27, Old Sudbury Road, will be impacted from Glezen Lane to the Sudbury town line. In Concord Nashawtuc Road, Sudbury Road and Route 117 will be heavily impacted. Should evacuation be required, do so immediately. Follow the directions of emergency management officials. Know alternate routes for travel, and stay away from flooded areas.
- 12.5 - Flooding impacts portions of Route 27, Old Sudbury Road, in Wayland as well as Route 20 both west and east bound at Route 27. Portions of Route 27 will have up to 12 inches of water. Other low lying areas in Wayland will experience flooding including Pelham Island Road and Shore Drive near Stonebridge Road. Flood waters will be impacting portions of Nashawtuc Road, Sudbury Road and Route 117 in Concord.
Gauge Info
| Coordinates | 42.3254, -71.3976 |
| RFC | NERFC |
| State | MA |
| WFO | BOX |
| County | Middlesex |
| Data Provider(s) | |
| US Geological Survey | USGS--Water Resources of the United States |
| USGS | 01098530 |
Gauge Location
Recent Crests
| 1. | 10.07 ft | on 04-04-2024 |
| 2. | 11.34 ft | on 01-13-2024 |
| 3. | 11.72 ft | on 01-10-2024 |
| 4. | 11.27 ft | on 12-19-2023 |
| 5. | 11.27 ft | on 12-19-2023 |
Recent Crests
| 1. | 10.07 ft | on 04-04-2024 |
| 2. | 11.34 ft | on 01-13-2024 |
| 3. | 11.72 ft | on 01-10-2024 |
| 4. | 11.27 ft | on 12-19-2023 |
| 5. | 11.27 ft | on 12-19-2023 |
| 6. | 10.51 ft | on 09-02-2021 |
| 7. | 10.61 ft | on 07-10-2021 |
| 8. | 10.28 ft | on 04-27-2019 |
| 9. | 10.69 ft | on 04-23-2019 |
| 10. | 10.59 ft | on 01-25-2019 |
| 11. | 10.42 ft | on 11-28-2018 |
| 12. | 10.21 ft | on 11-20-2018 |
| 13. | 10.25 ft | on 11-16-2018 |
| 14. | 10.24 ft | on 11-13-2018 |
| 15. | 10.18 ft | on 11-10-2018 |
| 16. | 10.23 ft | on 11-03-2018 |
| 17. | 10.05 ft | on 12-10-2014 |
| 18. | 10.65 ft | on 03-31-2014 |
| 19. | 10.18 ft | on 06-14-2013 |
| 20. | 10.15 ft | on 08-29-2011 |
| 21. | 10.13 ft | on 03-08-2011 |
| 22. | 13.99 ft | on 03-31-2010 |
| 23. | 10.78 ft | on 03-24-2010 |
| 24. | 12.92 ft | on 03-16-2010 |
| 25. | 11.12 ft | on 02-26-2010 |
| 26. | 11.50 ft | on 12-12-2008 |
| 27. | 10.57 ft | on 03-09-2008 |
| 28. | 10.27 ft | on 02-19-2008 |
| 29. | 10.37 ft | on 02-14-2008 |
| 30. | 11.01 ft | on 04-18-2007 |
| 31. | 10.20 ft | on 05-16-2006 |
| 32. | 10.10 ft | on 10-27-2005 |
| 33. | 10.30 ft | on 10-26-2005 |
| 34. | 12.04 ft | on 10-15-2005 |
| 35. | 10.28 ft | on 04-03-2005 |
| 36. | 10.36 ft | on 04-02-2004 |
| 37. | 9.43 ft | on 12-20-2002 |
| 38. | 12.61 ft | on 03-23-2001 |
| 39. | 10.90 ft | on 04-24-2000 |
| 40. | 9.31 ft | on 02-04-1999 |
| 41. | 10.77 ft | on 06-14-1998 |
| 42. | 11.08 ft | on 10-21-1996 |
| 43. | 10.42 ft | on 01-28-1996 |
| 44. | 8.55 ft | on 12-24-1994 |
| 45. | 10.26 ft | on 03-24-1994 |
| 46. | 11.97 ft | on 04-01-1993 |
| 47. | 10.49 ft | on 08-20-1991 |
| 48. | 9.71 ft | on 10-21-1989 |
| 49. | 8.90 ft | on 08-13-1989 |
| 50. | 13.47 ft | on 04-08-1987 |
| 51. | 9.80 ft | on 03-16-1986 |
| 52. | 8.65 ft | on 08-01-1985 |
| 53. | 11.98 ft | on 06-03-1984 |
| 54. | 10.09 ft | on 03-12-1983 |
| 55. | 13.30 ft | on 06-07-1982 |
| 56. | 9.18 ft | on 02-26-1981 |
Historic Crests
| 1. | 13.99 ft | on 03-31-2010 |
| 2. | 13.47 ft | on 04-08-1987 |
| 3. | 13.30 ft | on 06-07-1982 |
| 4. | 12.92 ft | on 03-16-2010 |
| 5. | 12.61 ft | on 03-23-2001 |
Historic Crests
| 1. | 13.99 ft | on 03-31-2010 |
| 2. | 13.47 ft | on 04-08-1987 |
| 3. | 13.30 ft | on 06-07-1982 |
| 4. | 12.92 ft | on 03-16-2010 |
| 5. | 12.61 ft | on 03-23-2001 |
| 6. | 12.04 ft | on 10-15-2005 |
| 7. | 11.98 ft | on 06-03-1984 |
| 8. | 11.97 ft | on 04-01-1993 |
| 9. | 11.72 ft | on 01-10-2024 |
| 10. | 11.50 ft | on 12-12-2008 |
| 11. | 11.34 ft | on 01-13-2024 |
| 12. | 11.27 ft | on 12-19-2023 |
| 13. | 11.27 ft | on 12-19-2023 |
| 14. | 11.12 ft | on 02-26-2010 |
| 15. | 11.08 ft | on 10-21-1996 |
| 16. | 11.01 ft | on 04-18-2007 |
| 17. | 10.90 ft | on 04-24-2000 |
| 18. | 10.78 ft | on 03-24-2010 |
| 19. | 10.77 ft | on 06-14-1998 |
| 20. | 10.69 ft | on 04-23-2019 |
| 21. | 10.65 ft | on 03-31-2014 |
| 22. | 10.61 ft | on 07-10-2021 |
| 23. | 10.59 ft | on 01-25-2019 |
| 24. | 10.57 ft | on 03-09-2008 |
| 25. | 10.51 ft | on 09-02-2021 |
| 26. | 10.49 ft | on 08-20-1991 |
| 27. | 10.42 ft | on 11-28-2018 |
| 28. | 10.42 ft | on 01-28-1996 |
| 29. | 10.37 ft | on 02-14-2008 |
| 30. | 10.36 ft | on 04-02-2004 |
| 31. | 10.30 ft | on 10-26-2005 |
| 32. | 10.28 ft | on 04-03-2005 |
| 33. | 10.28 ft | on 04-27-2019 |
| 34. | 10.27 ft | on 02-19-2008 |
| 35. | 10.26 ft | on 03-24-1994 |
| 36. | 10.25 ft | on 11-16-2018 |
| 37. | 10.24 ft | on 11-13-2018 |
| 38. | 10.23 ft | on 11-03-2018 |
| 39. | 10.21 ft | on 11-20-2018 |
| 40. | 10.20 ft | on 05-16-2006 |
| 41. | 10.18 ft | on 11-10-2018 |
| 42. | 10.18 ft | on 06-14-2013 |
| 43. | 10.15 ft | on 08-29-2011 |
| 44. | 10.13 ft | on 03-08-2011 |
| 45. | 10.10 ft | on 10-27-2005 |
| 46. | 10.09 ft | on 03-12-1983 |
| 47. | 10.07 ft | on 04-04-2024 |
| 48. | 10.05 ft | on 12-10-2014 |
| 49. | 9.80 ft | on 03-16-1986 |
| 50. | 9.71 ft | on 10-21-1989 |
| 51. | 9.43 ft | on 12-20-2002 |
| 52. | 9.31 ft | on 02-04-1999 |
| 53. | 9.18 ft | on 02-26-1981 |
| 54. | 8.90 ft | on 08-13-1989 |
| 55. | 8.65 ft | on 08-01-1985 |
| 56. | 8.55 ft | on 12-24-1994 |
Vertical Datum Table
| type | NAVD88 |
|---|---|
| major Flooding | 122.78 ft |
| moderate Flooding | 121.78 ft |
| minor Flooding | 119.78 ft |
| action | 118.28 ft |
| Latest Value | 115.28 ft |
| Gauge Zero | 109.78 ft |
Gauge Photos
No Images Found
Unique Local Info
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Potential River Levels Used to Estimate the Chance of Flooding and the Range of Possible River Levels |
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| 10 Day (HEFS) | 10 Day (NAEFS) | 10 Day (GEFS) |
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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.
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.