Blackwater River (VA) at Dendron
Flood Warning
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 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) 07/15/2025 10:45 AM EDTRecord: 46.4 ftCATEGORY STAGE 
Minor Flooding 36.3 ft Action 35.3 ft Reliability of the Forecast:
NOTE: Forecasts are not available. Only observed stages are available for this point.
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
- 44.3 - The Blackwater River overflows the bridge on White Marsh Road.
- 42.5 - River stage sensor operating limit
- 42.3 - White Marsh Road Bridge, over the Blackwater River, is completely flooded.
- 40.3 - White Marsh Road (VA 617), including the west end of the bridge across the Blackwater River, begins to flood.
- 39.8 - Water begins to cover Sexton Rd about 1/8 of a mile north of the river gauge.
- 39.3 - Walls Bridge Road is impassible due to high water.
- 36.3 - Jones Town Drive and Walls Bridge Road begin to flood.
Gauge Info
| Coordinates | 37.0250, -76.8750 |
| RFC | SERFC |
| State | VA |
| WFO | AKQ |
| County | Surry |
| Data Provider(s) | |
| US Geological Survey | USGS--Water Resources of the United States |
| USGS | 02047500 |
Gauge Location
Recent Crests
| 1. | 37.26 ft | on 03-19-2025 | (P) |
| 2. | 35.78 ft | on 02-17-2025 | |
| 3. | 36.31 ft | on 03-08-2024 | (P) |
| 4. | 36.62 ft | on 02-20-2021 | (P) |
| 5. | 36.37 ft | on 12-26-2020 | (P) |
Recent Crests
| 1. | 37.26 ft | on 03-19-2025 | (P) |
| 2. | 35.78 ft | on 02-17-2025 | |
| 3. | 36.31 ft | on 03-08-2024 | (P) |
| 4. | 36.62 ft | on 02-20-2021 | (P) |
| 5. | 36.37 ft | on 12-26-2020 | (P) |
| 6. | 38.30 ft | on 09-19-2020 | (P) |
| 7. | 38.67 ft | on 08-16-2020 | (P) |
| 8. | 35.20 ft | on 03-06-2019 | |
| 9. | 36.01 ft | on 02-25-2019 | |
| 10. | 35.75 ft | on 11-17-2018 | |
| 11. | 34.96 ft | on 05-22-2018 | |
| 12. | 36.37 ft | on 10-10-2016 | |
| 13. | 35.91 ft | on 02-06-2016 | |
| 14. | 34.93 ft | on 12-28-2015 | |
| 15. | 36.79 ft | on 07-01-2015 | |
| 16. | 35.14 ft | on 04-18-2014 | |
| 17. | 39.88 ft | on 06-09-2013 | |
| 18. | 36.88 ft | on 01-19-2013 | |
| 19. | 39.66 ft | on 09-09-2011 | |
| 20. | 39.37 ft | on 08-29-2011 | |
| 21. | 38.57 ft | on 09-02-2006 | |
| 22. | 35.57 ft | on 12-12-2004 | |
| 23. | 36.32 ft | on 09-20-2004 | |
| 24. | 39.87 ft | on 09-20-2003 | |
| 25. | 33.33 ft | on 04-03-2002 | |
| 26. | 33.95 ft | on 05-28-2001 | |
| 27. | 39.42 ft | on 09-05-2000 | |
| 28. | 46.41 ft | on 09-17-1999 | |
| 29. | 37.11 ft | on 02-06-1998 | |
| 30. | 35.91 ft | on 10-10-1996 | |
| 31. | 35.11 ft | on 09-12-1996 | |
| 32. | 35.28 ft | on 03-10-1995 | |
| 33. | 37.42 ft | on 03-04-1994 | |
| 34. | 35.93 ft | on 03-08-1993 | |
| 35. | 34.61 ft | on 03-12-1992 | |
| 36. | 35.19 ft | on 01-14-1991 | |
| 37. | 38.06 ft | on 08-08-1990 | |
| 38. | 35.81 ft | on 05-04-1989 | |
| 39. | 34.73 ft | on 02-14-1988 | |
| 40. | 36.93 ft | on 04-20-1987 | |
| 41. | 35.12 ft | on 12-02-1985 | |
| 42. | 38.41 ft | on 09-28-1985 | |
| 43. | 36.29 ft | on 03-08-1984 | |
| 44. | 36.20 ft | on 04-19-1983 | |
| 45. | 36.01 ft | on 08-13-1982 | |
| 46. | 34.72 ft | on 06-09-1981 | |
| 47. | 36.19 ft | on 11-15-1979 | |
| 48. | 37.56 ft | on 02-28-1979 | |
| 49. | 36.37 ft | on 01-21-1978 | |
| 50. | 34.33 ft | on 03-10-1977 | |
| 51. | 35.56 ft | on 01-31-1976 | |
| 52. | 37.70 ft | on 03-21-1975 | |
| 53. | 33.88 ft | on 03-21-1974 | |
| 54. | 36.92 ft | on 10-08-1972 | |
| 55. | 35.55 ft | on 10-26-1971 | |
| 56. | 34.40 ft | on 04-09-1971 | |
| 57. | 34.94 ft | on 04-05-1970 | |
| 58. | 36.23 ft | on 08-07-1969 | |
| 59. | 35.08 ft | on 03-20-1968 | |
| 60. | 34.53 ft | on 02-24-1967 | |
| 61. | 33.52 ft | on 05-07-1966 | |
| 62. | 34.05 ft | on 03-29-1965 | |
| 63. | 34.06 ft | on 02-22-1964 | |
| 64. | 38.40 ft | on 06-05-1963 | |
| 65. | 37.23 ft | on 10-22-1961 | |
| 66. | 35.40 ft | on 02-10-1961 | |
| 67. | 37.69 ft | on 09-14-1960 | |
| 68. | 35.54 ft | on 01-02-1959 | |
| 69. | 36.79 ft | on 08-05-1958 | |
| 70. | 35.50 ft | on 02-05-1957 | |
| 71. | 34.29 ft | on 02-13-1956 | |
| 72. | 35.71 ft | on 08-19-1955 | |
| 73. | 34.96 ft | on 05-23-1954 | |
| 74. | 34.38 ft | on 03-18-1953 | |
| 75. | 35.86 ft | on 01-30-1952 | |
| 76. | 33.86 ft | on 03-22-1951 | |
| 77. | 35.42 ft | on 09-12-1950 | |
| 78. | 35.75 ft | on 08-16-1949 | |
| 79. | 35.50 ft | on 02-18-1948 | |
| 80. | 33.92 ft | on 01-23-1947 | |
| 81. | 36.04 ft | on 12-31-1945 | |
| 82. | 38.20 ft | on 07-21-1945 | |
| 83. | 35.14 ft | on 03-09-1944 | |
| 84. | 35.00 ft | on 02-08-1943 | |
| 85. | 33.64 ft | on 03-11-1942 | |
| 86. | 42.40 ft | on 08-20-1940 |
Historic Crests
| 1. | 46.41 ft | on 09-17-1999 |
| 2. | 42.40 ft | on 08-20-1940 |
| 3. | 39.88 ft | on 06-09-2013 |
| 4. | 39.87 ft | on 09-20-2003 |
| 5. | 39.66 ft | on 09-09-2011 |
Historic Crests
| 1. | 46.41 ft | on 09-17-1999 | |
| 2. | 42.40 ft | on 08-20-1940 | |
| 3. | 39.88 ft | on 06-09-2013 | |
| 4. | 39.87 ft | on 09-20-2003 | |
| 5. | 39.66 ft | on 09-09-2011 | |
| 6. | 39.42 ft | on 09-05-2000 | |
| 7. | 39.37 ft | on 08-29-2011 | |
| 8. | 38.67 ft | on 08-16-2020 | (P) |
| 9. | 38.57 ft | on 09-02-2006 | |
| 10. | 38.41 ft | on 09-28-1985 | |
| 11. | 38.40 ft | on 06-05-1963 | |
| 12. | 38.30 ft | on 09-19-2020 | (P) |
| 13. | 38.20 ft | on 07-21-1945 | |
| 14. | 38.06 ft | on 08-08-1990 | |
| 15. | 37.70 ft | on 03-21-1975 | |
| 16. | 37.69 ft | on 09-14-1960 | |
| 17. | 37.56 ft | on 02-28-1979 | |
| 18. | 37.42 ft | on 03-04-1994 | |
| 19. | 37.26 ft | on 03-19-2025 | (P) |
| 20. | 37.23 ft | on 10-22-1961 | |
| 21. | 37.11 ft | on 02-06-1998 | |
| 22. | 36.93 ft | on 04-20-1987 | |
| 23. | 36.92 ft | on 10-08-1972 | |
| 24. | 36.88 ft | on 01-19-2013 | |
| 25. | 36.79 ft | on 08-05-1958 | |
| 26. | 36.79 ft | on 07-01-2015 | |
| 27. | 36.62 ft | on 02-20-2021 | (P) |
| 28. | 36.37 ft | on 01-21-1978 | |
| 29. | 36.37 ft | on 12-26-2020 | (P) |
| 30. | 36.37 ft | on 10-10-2016 | |
| 31. | 36.32 ft | on 09-20-2004 | |
| 32. | 36.31 ft | on 03-08-2024 | (P) |
| 33. | 36.29 ft | on 03-08-1984 | |
| 34. | 36.23 ft | on 08-07-1969 | |
| 35. | 36.20 ft | on 04-19-1983 | |
| 36. | 36.19 ft | on 11-15-1979 | |
| 37. | 36.04 ft | on 12-31-1945 | |
| 38. | 36.01 ft | on 02-25-2019 | |
| 39. | 36.01 ft | on 08-13-1982 | |
| 40. | 35.93 ft | on 03-08-1993 | |
| 41. | 35.91 ft | on 10-10-1996 | |
| 42. | 35.91 ft | on 02-06-2016 | |
| 43. | 35.86 ft | on 01-30-1952 | |
| 44. | 35.81 ft | on 05-04-1989 | |
| 45. | 35.78 ft | on 02-17-2025 | |
| 46. | 35.75 ft | on 11-17-2018 | |
| 47. | 35.75 ft | on 08-16-1949 | |
| 48. | 35.71 ft | on 08-19-1955 | |
| 49. | 35.57 ft | on 12-12-2004 | |
| 50. | 35.56 ft | on 01-31-1976 | |
| 51. | 35.55 ft | on 10-26-1971 | |
| 52. | 35.54 ft | on 01-02-1959 | |
| 53. | 35.50 ft | on 02-18-1948 | |
| 54. | 35.50 ft | on 02-05-1957 | |
| 55. | 35.42 ft | on 09-12-1950 | |
| 56. | 35.40 ft | on 02-10-1961 | |
| 57. | 35.28 ft | on 03-10-1995 | |
| 58. | 35.20 ft | on 03-06-2019 | |
| 59. | 35.19 ft | on 01-14-1991 | |
| 60. | 35.14 ft | on 03-09-1944 | |
| 61. | 35.14 ft | on 04-18-2014 | |
| 62. | 35.12 ft | on 12-02-1985 | |
| 63. | 35.11 ft | on 09-12-1996 | |
| 64. | 35.08 ft | on 03-20-1968 | |
| 65. | 35.00 ft | on 02-08-1943 | |
| 66. | 34.96 ft | on 05-22-2018 | |
| 67. | 34.96 ft | on 05-23-1954 | |
| 68. | 34.94 ft | on 04-05-1970 | |
| 69. | 34.93 ft | on 12-28-2015 | |
| 70. | 34.73 ft | on 02-14-1988 | |
| 71. | 34.72 ft | on 06-09-1981 | |
| 72. | 34.61 ft | on 03-12-1992 | |
| 73. | 34.53 ft | on 02-24-1967 | |
| 74. | 34.40 ft | on 04-09-1971 | |
| 75. | 34.38 ft | on 03-18-1953 | |
| 76. | 34.33 ft | on 03-10-1977 | |
| 77. | 34.29 ft | on 02-13-1956 | |
| 78. | 34.06 ft | on 02-22-1964 | |
| 79. | 34.05 ft | on 03-29-1965 | |
| 80. | 33.95 ft | on 05-28-2001 | |
| 81. | 33.92 ft | on 01-23-1947 | |
| 82. | 33.88 ft | on 03-21-1974 | |
| 83. | 33.86 ft | on 03-22-1951 | |
| 84. | 33.64 ft | on 03-11-1942 | |
| 85. | 33.52 ft | on 05-07-1966 | |
| 86. | 33.33 ft | on 04-03-2002 |
Vertical Datum Table
| type | NAVD88 |
|---|---|
| major Flooding | N/A |
| moderate Flooding | N/A |
| minor Flooding | 36.30 ft |
| action | 35.30 ft |
| Latest Value | 33.19 ft |
| Gauge Zero | 0.00 ft |
Probability Information
No Images Available
Unique Local Info
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Additional Water and Weather Topics from the
Southeast River Forecast Center (SERFC): |
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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.