St. Marys River at Interstate 95 (in MHHW)
No watches, warnings or advisories are in effect for this area.
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.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) 06/26/2025 7:15 PM EDTRecord: 5.1 ftLow Threshold: -6.5 ftCATEGORY STAGE 
Major Flooding 3 ft Moderate Flooding 1.5 ft Minor Flooding 1 ft Action 0.5 ft Reliability of the Forecast:
NOTE: Forecasts are not available. Only observed stages are available for this point.
Water levels are referenced to the Mean Higher High Water (MHHW) Datum. This datum can be used to approximate sea water inundation of normally dry ground near the coast. For specific impacts, please refer to the statements on this page.
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
- 3 - EXTENSIVE INUNDATION OF STRUCTURES AND ROADS IN THE AREA. EVACUATIONS OF PEOPLE OR TRANSFER OF PROPERTY TO HIGHER GROUND IS LIKELY.
- 1.5 - SOME INUNDATION OF STRUCTURES AND ROADS ALONG THE RIVER BASIN IS EXPECTED. EVACUATIONS OF PEOPLE OR PROPERTY TO HIGHER GROUND IS POSSIBLE.
- 1 - FLOODING OF LOW LYING ROADS AND CAMPGROUNDS POSSIBLE. SOME BOAT RAMPS AND DOCKS ALONG THE RIVER MAY BEGIN TO FLOOD.
Gauge Location
Recent Crests
| 1. | 1.05 ft | on 11-17-2024 |
| 2. | 1.36 ft | on 11-16-2024 |
| 3. | 1.07 ft | on 11-15-2024 |
| 4. | 1.32 ft | on 11-14-2024 |
| 5. | 1.09 ft | on 11-13-2024 |
Recent Crests
| 1. | 1.05 ft | on 11-17-2024 | |
| 2. | 1.36 ft | on 11-16-2024 | |
| 3. | 1.07 ft | on 11-15-2024 | |
| 4. | 1.32 ft | on 11-14-2024 | |
| 5. | 1.09 ft | on 11-13-2024 | |
| 6. | 1.13 ft | on 11-13-2024 | |
| 7. | 1.02 ft | on 10-10-2024 | |
| 8. | 1.48 ft | on 10-10-2024 | |
| 9. | 1.01 ft | on 09-22-2024 | |
| 10. | 1.18 ft | on 09-21-2024 | |
| 11. | 1.06 ft | on 09-20-2024 | |
| 12. | 1.16 ft | on 09-16-2024 | |
| 13. | 1.04 ft | on 09-16-2024 | |
| 14. | 1.32 ft | on 09-15-2024 | |
| 15. | 1.00 ft | on 09-14-2024 | |
| 16. | 1.09 ft | on 08-23-2024 | |
| 17. | 1.16 ft | on 08-23-2024 | |
| 18. | 1.09 ft | on 08-22-2024 | |
| 19. | 1.22 ft | on 08-22-2024 | |
| 20. | 1.02 ft | on 02-06-2024 | |
| 21. | 1.33 ft | on 12-17-2023 | |
| 22. | 1.10 ft | on 11-26-2023 | |
| 23. | 1.14 ft | on 11-15-2023 | |
| 24. | 1.03 ft | on 11-14-2023 | |
| 25. | 1.00 ft | on 11-02-2023 | |
| 26. | 1.06 ft | on 10-03-2023 | |
| 27. | 1.20 ft | on 10-02-2023 | |
| 28. | 1.05 ft | on 10-01-2023 | |
| 29. | 1.31 ft | on 10-01-2023 | |
| 30. | 1.21 ft | on 09-30-2023 | |
| 31. | 1.36 ft | on 09-30-2023 | |
| 32. | 1.39 ft | on 09-29-2023 | |
| 33. | 1.31 ft | on 09-28-2023 | |
| 34. | 1.37 ft | on 09-28-2023 | |
| 35. | 1.40 ft | on 09-27-2023 | |
| 36. | 1.01 ft | on 08-03-2023 | |
| 37. | 1.15 ft | on 06-06-2023 | |
| 38. | 1.54 ft | on 06-05-2023 | |
| 39. | 1.12 ft | on 06-03-2023 | |
| 40. | 1.01 ft | on 06-02-2023 | |
| 41. | 1.25 ft | on 04-11-2023 | |
| 42. | 1.64 ft | on 04-10-2023 | |
| 43. | 1.10 ft | on 04-09-2023 | |
| 44. | 1.15 ft | on 12-21-2022 | |
| 45. | 1.26 ft | on 09-29-2022 | |
| 46. | 1.04 ft | on 05-12-2022 | |
| 47. | 1.22 ft | on 11-09-2021 | |
| 48. | 1.02 ft | on 11-08-2021 | |
| 49. | 1.66 ft | on 11-08-2021 | |
| 50. | 1.77 ft | on 11-07-2021 | |
| 51. | 1.76 ft | on 11-06-2021 | |
| 52. | 1.22 ft | on 11-06-2021 | |
| 53. | 1.44 ft | on 11-05-2021 | |
| 54. | 1.00 ft | on 11-04-2021 | |
| 55. | 1.27 ft | on 10-19-2020 | |
| 56. | 1.22 ft | on 10-18-2020 | |
| 57. | 1.02 ft | on 10-17-2020 | |
| 58. | 1.50 ft | on 09-22-2020 | |
| 59. | 1.42 ft | on 09-22-2020 | |
| 60. | 1.67 ft | on 09-21-2020 | |
| 61. | 1.90 ft | on 09-21-2020 | |
| 62. | 1.79 ft | on 09-20-2020 | |
| 63. | 1.56 ft | on 09-20-2020 | |
| 64. | 1.49 ft | on 09-19-2020 | |
| 65. | 1.28 ft | on 09-16-2020 | |
| 66. | 1.30 ft | on 09-15-2020 | |
| 67. | 1.08 ft | on 12-25-2019 | |
| 68. | 1.44 ft | on 09-04-2019 | |
| 69. | 1.00 ft | on 09-03-2019 | |
| 70. | 1.03 ft | on 09-01-2019 | |
| 71. | 1.06 ft | on 08-31-2019 | |
| 72. | 1.03 ft | on 08-03-2019 | |
| 73. | 1.19 ft | on 11-24-2018 | |
| 74. | 1.31 ft | on 11-23-2018 | |
| 75. | 1.07 ft | on 11-23-2018 | |
| 76. | 1.04 ft | on 01-03-2018 | |
| 77. | 1.02 ft | on 01-02-2018 | |
| 78. | 1.03 ft | on 10-19-2017 | |
| 79. | 1.06 ft | on 10-18-2017 | |
| 80. | 1.54 ft | on 09-11-2017 | |
| 81. | 1.58 ft | on 09-11-2017 | |
| 82. | 1.01 ft | on 11-14-2016 | |
| 83. | 1.28 ft | on 11-13-2016 | |
| 84. | 2.79 ft | on 10-07-2016 | |
| 85. | 1.00 ft | on 10-28-2015 | |
| 86. | 1.24 ft | on 10-27-2015 | |
| 87. | 1.11 ft | on 10-02-2015 | |
| 88. | 1.06 ft | on 09-29-2015 | |
| 89. | 1.06 ft | on 09-28-2015 | |
| 90. | 1.10 ft | on 09-27-2015 | |
| 91. | 1.12 ft | on 09-27-2015 | |
| 92. | 1.09 ft | on 09-26-2015 | |
| 93. | 1.07 ft | on 09-24-2015 | |
| 94. | 1.06 ft | on 12-08-2014 | |
| 95. | 1.00 ft | on 04-20-2014 | |
| 96. | 1.04 ft | on 11-05-2013 | |
| 97. | 1.06 ft | on 10-15-2013 | |
| 98. | 1.06 ft | on 10-15-2013 | |
| 99. | 1.10 ft | on 11-17-2012 | |
| 100. | 1.04 ft | on 11-15-2012 | |
| 101. | 1.01 ft | on 11-14-2012 | |
| 102. | 1.08 ft | on 07-06-2012 | |
| 103. | 1.40 ft | on 07-05-2012 | |
| 104. | 1.60 ft | on 07-03-2012 | |
| 105. | 1.45 ft | on 07-02-2012 | |
| 106. | 1.12 ft | on 07-01-2012 | |
| 107. | 1.07 ft | on 06-27-2012 | |
| 108. | 1.00 ft | on 06-07-2012 | |
| 109. | 1.71 ft | on 05-28-2012 | |
| 110. | 1.08 ft | on 10-10-2011 | |
| 111. | 1.09 ft | on 08-26-2011 | |
| 112. | 5.07 ft | on 09-10-1964 | 1 |
Historic Crests
| 1. | 5.07 ft | on 09-10-1964 | 1 |
| 2. | 2.79 ft | on 10-07-2016 | |
| 3. | 1.90 ft | on 09-21-2020 | |
| 4. | 1.79 ft | on 09-20-2020 | |
| 5. | 1.77 ft | on 11-07-2021 |
Historic Crests
| 1. | 5.07 ft | on 09-10-1964 | 1 |
| 2. | 2.79 ft | on 10-07-2016 | |
| 3. | 1.90 ft | on 09-21-2020 | |
| 4. | 1.79 ft | on 09-20-2020 | |
| 5. | 1.77 ft | on 11-07-2021 | |
| 6. | 1.76 ft | on 11-06-2021 | |
| 7. | 1.71 ft | on 05-28-2012 | |
| 8. | 1.67 ft | on 09-21-2020 | |
| 9. | 1.66 ft | on 11-08-2021 | |
| 10. | 1.64 ft | on 04-10-2023 | |
| 11. | 1.60 ft | on 07-03-2012 | |
| 12. | 1.58 ft | on 09-11-2017 | |
| 13. | 1.56 ft | on 09-20-2020 | |
| 14. | 1.54 ft | on 06-05-2023 | |
| 15. | 1.54 ft | on 09-11-2017 | |
| 16. | 1.50 ft | on 09-22-2020 | |
| 17. | 1.49 ft | on 09-19-2020 | |
| 18. | 1.48 ft | on 10-10-2024 | |
| 19. | 1.45 ft | on 07-02-2012 | |
| 20. | 1.44 ft | on 09-04-2019 | |
| 21. | 1.44 ft | on 11-05-2021 | |
| 22. | 1.42 ft | on 09-22-2020 | |
| 23. | 1.40 ft | on 09-27-2023 | |
| 24. | 1.40 ft | on 07-05-2012 | |
| 25. | 1.39 ft | on 09-29-2023 | |
| 26. | 1.37 ft | on 09-28-2023 | |
| 27. | 1.36 ft | on 11-16-2024 | |
| 28. | 1.36 ft | on 09-30-2023 | |
| 29. | 1.33 ft | on 12-17-2023 | |
| 30. | 1.32 ft | on 11-14-2024 | |
| 31. | 1.32 ft | on 09-15-2024 | |
| 32. | 1.31 ft | on 10-01-2023 | |
| 33. | 1.31 ft | on 09-28-2023 | |
| 34. | 1.31 ft | on 11-23-2018 | |
| 35. | 1.30 ft | on 09-15-2020 | |
| 36. | 1.28 ft | on 09-16-2020 | |
| 37. | 1.28 ft | on 11-13-2016 | |
| 38. | 1.27 ft | on 10-19-2020 | |
| 39. | 1.26 ft | on 09-29-2022 | |
| 40. | 1.25 ft | on 04-11-2023 | |
| 41. | 1.24 ft | on 10-27-2015 | |
| 42. | 1.22 ft | on 11-06-2021 | |
| 43. | 1.22 ft | on 11-09-2021 | |
| 44. | 1.22 ft | on 10-18-2020 | |
| 45. | 1.22 ft | on 08-22-2024 | |
| 46. | 1.21 ft | on 09-30-2023 | |
| 47. | 1.20 ft | on 10-02-2023 | |
| 48. | 1.19 ft | on 11-24-2018 | |
| 49. | 1.18 ft | on 09-21-2024 | |
| 50. | 1.16 ft | on 09-16-2024 | |
| 51. | 1.16 ft | on 08-23-2024 | |
| 52. | 1.15 ft | on 12-21-2022 | |
| 53. | 1.15 ft | on 06-06-2023 | |
| 54. | 1.14 ft | on 11-15-2023 | |
| 55. | 1.13 ft | on 11-13-2024 | |
| 56. | 1.12 ft | on 07-01-2012 | |
| 57. | 1.12 ft | on 06-03-2023 | |
| 58. | 1.12 ft | on 09-27-2015 | |
| 59. | 1.11 ft | on 10-02-2015 | |
| 60. | 1.10 ft | on 11-17-2012 | |
| 61. | 1.10 ft | on 11-26-2023 | |
| 62. | 1.10 ft | on 04-09-2023 | |
| 63. | 1.10 ft | on 09-27-2015 | |
| 64. | 1.09 ft | on 08-22-2024 | |
| 65. | 1.09 ft | on 11-13-2024 | |
| 66. | 1.09 ft | on 08-26-2011 | |
| 67. | 1.09 ft | on 08-23-2024 | |
| 68. | 1.09 ft | on 09-26-2015 | |
| 69. | 1.08 ft | on 10-10-2011 | |
| 70. | 1.08 ft | on 12-25-2019 | |
| 71. | 1.08 ft | on 07-06-2012 | |
| 72. | 1.07 ft | on 06-27-2012 | |
| 73. | 1.07 ft | on 11-15-2024 | |
| 74. | 1.07 ft | on 09-24-2015 | |
| 75. | 1.07 ft | on 11-23-2018 | |
| 76. | 1.06 ft | on 09-20-2024 | |
| 77. | 1.06 ft | on 09-28-2015 | |
| 78. | 1.06 ft | on 09-29-2015 | |
| 79. | 1.06 ft | on 10-15-2013 | |
| 80. | 1.06 ft | on 10-15-2013 | |
| 81. | 1.06 ft | on 12-08-2014 | |
| 82. | 1.06 ft | on 10-18-2017 | |
| 83. | 1.06 ft | on 08-31-2019 | |
| 84. | 1.06 ft | on 10-03-2023 | |
| 85. | 1.05 ft | on 11-17-2024 | |
| 86. | 1.05 ft | on 10-01-2023 | |
| 87. | 1.04 ft | on 05-12-2022 | |
| 88. | 1.04 ft | on 01-03-2018 | |
| 89. | 1.04 ft | on 11-05-2013 | |
| 90. | 1.04 ft | on 09-16-2024 | |
| 91. | 1.04 ft | on 11-15-2012 | |
| 92. | 1.03 ft | on 08-03-2019 | |
| 93. | 1.03 ft | on 11-14-2023 | |
| 94. | 1.03 ft | on 09-01-2019 | |
| 95. | 1.03 ft | on 10-19-2017 | |
| 96. | 1.02 ft | on 01-02-2018 | |
| 97. | 1.02 ft | on 10-10-2024 | |
| 98. | 1.02 ft | on 02-06-2024 | |
| 99. | 1.02 ft | on 11-08-2021 | |
| 100. | 1.02 ft | on 10-17-2020 | |
| 101. | 1.01 ft | on 09-22-2024 | |
| 102. | 1.01 ft | on 11-14-2012 | |
| 103. | 1.01 ft | on 11-14-2016 | |
| 104. | 1.01 ft | on 06-02-2023 | |
| 105. | 1.01 ft | on 08-03-2023 | |
| 106. | 1.00 ft | on 09-14-2024 | |
| 107. | 1.00 ft | on 11-04-2021 | |
| 108. | 1.00 ft | on 09-03-2019 | |
| 109. | 1.00 ft | on 10-28-2015 | |
| 110. | 1.00 ft | on 04-20-2014 | |
| 111. | 1.00 ft | on 06-07-2012 | |
| 112. | 1.00 ft | on 11-02-2023 |
Gauge Photos
No Images Found
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.