Cowlitz River below Mayfield Dam
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
- Warning: 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) 04/01/2025 4:00 PM PDTOfficial Forecast (FCST) 04/01/2025 2:53 PM PDTRecord: 68.4 cfsCATEGORY FLOW 
Major Flooding 45 kcfs Moderate Flooding 35 kcfs Minor Flooding 25 kcfs Action 17 kcfs Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions
NOTE: Forecasts are issued routinely year-round.
River forecasts for this location take into account past and future precipitation. The stages/flows that will occur may be different if future rainfall is different than forecast.
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
- 60000 - the Cowlitz River will cause severe near record flooding below Mayfield Dam downstream through Toledo. Deep and swift flood waters will inundate farmlands...roads...and some residential areas...especially near Toledo. Major damage due to erosion is likely. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Cowlitz River Basin.
- 45000 - the Cowlitz River will cause major flooding from Mayfield Dam downstream through Toledo. Deep and swift flood waters will inundate farmlands...roads...and some residential areas...especially near Toledo. Some damage due to erosion is possible. Flooding will occur all along the river including headwaters...tributaries...and other streams within and near the Cowlitz River Basin.
- 35000 - the Cowlitz River will flood the reach from Mayfield Dam downstream through Toledo. Swift flood waters will inundate some farmlands and several roads...especially near Toledo.
Gauge Info
| Coordinates | 46.5106, -122.615 |
| RFC | NWRFC |
| State | WA |
| WFO | SEW |
| County | Lewis |
| Data Provider(s) | |
| US Geological Survey (derived) | USGS--Water Resources of the United States |
| USGS | 14238000 |
Gauge Location
Recent Crests
| 1. | 20.59 ft | on 01-07-2009 |
| 2. | 19.34 ft | on 11-09-2006 |
| 3. | 17.83 ft | on 01-04-1997 |
| 4. | 26.19 ft | on 11-28-1995 |
| 5. | 18.31 ft | on 02-19-1995 |
Recent Crests
| 1. | 20.59 ft | on 01-07-2009 |
| 2. | 19.34 ft | on 11-09-2006 |
| 3. | 17.83 ft | on 01-04-1997 |
| 4. | 26.19 ft | on 11-28-1995 |
| 5. | 18.31 ft | on 02-19-1995 |
| 6. | 19.62 ft | on 11-24-1990 |
| 7. | 17.78 ft | on 02-10-1990 |
| 8. | 17.32 ft | on 11-24-1986 |
| 9. | 17.82 ft | on 02-23-1986 |
| 10. | 18.97 ft | on 11-16-1983 |
| 11. | 17.56 ft | on 01-08-1983 |
| 12. | 18.45 ft | on 01-24-1982 |
| 13. | 18.42 ft | on 12-31-1980 |
| 14. | 18.40 ft | on 12-18-1979 |
| 15. | 23.69 ft | on 12-04-1977 |
| 16. | 25.26 ft | on 12-04-1975 |
| 17. | 17.76 ft | on 01-18-1975 |
| 18. | 17.85 ft | on 06-19-1974 |
| 19. | 17.47 ft | on 12-27-1972 |
| 20. | 19.27 ft | on 03-19-1972 |
| 21. | 19.03 ft | on 02-20-1968 |
| 22. | 20.09 ft | on 12-13-1966 |
| 23. | 16.76 ft | on 05-07-1966 |
| 24. | 24.36 ft | on 01-30-1965 |
| 25. | 17.49 ft | on 01-26-1964 |
| 26. | 21.83 ft | on 11-21-1962 |
| 27. | 17.93 ft | on 12-25-1961 |
| 28. | 19.29 ft | on 02-22-1961 |
| 29. | 18.67 ft | on 11-25-1960 |
| 30. | 17.49 ft | on 11-21-1960 |
| 31. | 17.68 ft | on 12-16-1959 |
| 32. | 23.71 ft | on 11-24-1959 |
| 33. | 18.96 ft | on 01-24-1959 |
| 34. | 18.07 ft | on 12-12-1958 |
| 35. | 17.24 ft | on 11-21-1958 |
| 36. | 19.69 ft | on 11-12-1958 |
| 37. | 17.36 ft | on 04-21-1958 |
| 38. | 17.52 ft | on 02-26-1957 |
| 39. | 18.28 ft | on 12-11-1956 |
| 40. | 17.35 ft | on 05-20-1956 |
| 41. | 19.65 ft | on 12-22-1955 |
| 42. | 22.05 ft | on 12-12-1955 |
| 43. | 18.66 ft | on 11-27-1955 |
| 44. | 17.11 ft | on 11-11-1955 |
| 45. | 17.33 ft | on 11-05-1955 |
| 46. | 17.33 ft | on 10-30-1955 |
| 47. | 17.47 ft | on 06-11-1955 |
| 48. | 17.06 ft | on 02-08-1955 |
| 49. | 17.64 ft | on 12-20-1953 |
| 50. | 21.09 ft | on 12-10-1953 |
| 51. | 19.14 ft | on 02-01-1953 |
| 52. | 17.36 ft | on 01-23-1953 |
| 53. | 18.96 ft | on 01-19-1953 |
| 54. | 17.90 ft | on 01-12-1953 |
| 55. | 22.50 ft | on 02-11-1951 |
| 56. | 21.33 ft | on 12-23-1950 |
| 57. | 17.53 ft | on 11-27-1950 |
| 58. | 18.70 ft | on 03-05-1950 |
| 59. | 18.20 ft | on 02-25-1950 |
| 60. | 19.52 ft | on 11-28-1949 |
| 61. | 16.97 ft | on 05-13-1949 |
| 62. | 17.70 ft | on 10-20-1947 |
| 63. | 17.89 ft | on 01-26-1947 |
| 64. | 24.75 ft | on 12-13-1946 |
| 65. | 17.87 ft | on 11-19-1946 |
| 66. | 20.33 ft | on 12-29-1945 |
| 67. | 18.22 ft | on 02-08-1945 |
| 68. | 16.90 ft | on 03-28-1943 |
| 69. | 21.50 ft | on 11-24-1942 |
| 70. | 19.26 ft | on 12-20-1941 |
| 71. | 17.26 ft | on 12-17-1939 |
| 72. | 19.42 ft | on 04-18-1938 |
| 73. | 19.91 ft | on 12-30-1937 |
| 74. | 17.07 ft | on 11-28-1937 |
| 75. | 18.32 ft | on 04-15-1937 |
| 76. | 17.12 ft | on 12-22-1934 |
| 77. | 20.10 ft | on 11-06-1934 |
| 78. | 18.73 ft | on 10-25-1934 |
| 79. | -1.00 ft | on 11-19-1911 |
Historic Crests
| 1. | 26.19 ft | on 11-28-1995 |
| 2. | 25.26 ft | on 12-04-1975 |
| 3. | 24.75 ft | on 12-13-1946 |
| 4. | 24.36 ft | on 01-30-1965 |
| 5. | 23.71 ft | on 11-24-1959 |
Historic Crests
| 1. | 26.19 ft | on 11-28-1995 |
| 2. | 25.26 ft | on 12-04-1975 |
| 3. | 24.75 ft | on 12-13-1946 |
| 4. | 24.36 ft | on 01-30-1965 |
| 5. | 23.71 ft | on 11-24-1959 |
| 6. | 23.69 ft | on 12-04-1977 |
| 7. | 22.50 ft | on 02-11-1951 |
| 8. | 22.05 ft | on 12-12-1955 |
| 9. | 21.83 ft | on 11-21-1962 |
| 10. | 21.50 ft | on 11-24-1942 |
| 11. | 21.33 ft | on 12-23-1950 |
| 12. | 21.09 ft | on 12-10-1953 |
| 13. | 20.59 ft | on 01-07-2009 |
| 14. | 20.33 ft | on 12-29-1945 |
| 15. | 20.10 ft | on 11-06-1934 |
| 16. | 20.09 ft | on 12-13-1966 |
| 17. | 19.91 ft | on 12-30-1937 |
| 18. | 19.69 ft | on 11-12-1958 |
| 19. | 19.65 ft | on 12-22-1955 |
| 20. | 19.62 ft | on 11-24-1990 |
| 21. | 19.52 ft | on 11-28-1949 |
| 22. | 19.42 ft | on 04-18-1938 |
| 23. | 19.34 ft | on 11-09-2006 |
| 24. | 19.29 ft | on 02-22-1961 |
| 25. | 19.27 ft | on 03-19-1972 |
| 26. | 19.26 ft | on 12-20-1941 |
| 27. | 19.14 ft | on 02-01-1953 |
| 28. | 19.03 ft | on 02-20-1968 |
| 29. | 18.97 ft | on 11-16-1983 |
| 30. | 18.96 ft | on 01-19-1953 |
| 31. | 18.96 ft | on 01-24-1959 |
| 32. | 18.73 ft | on 10-25-1934 |
| 33. | 18.70 ft | on 03-05-1950 |
| 34. | 18.67 ft | on 11-25-1960 |
| 35. | 18.66 ft | on 11-27-1955 |
| 36. | 18.45 ft | on 01-24-1982 |
| 37. | 18.42 ft | on 12-31-1980 |
| 38. | 18.40 ft | on 12-18-1979 |
| 39. | 18.32 ft | on 04-15-1937 |
| 40. | 18.31 ft | on 02-19-1995 |
| 41. | 18.28 ft | on 12-11-1956 |
| 42. | 18.22 ft | on 02-08-1945 |
| 43. | 18.20 ft | on 02-25-1950 |
| 44. | 18.07 ft | on 12-12-1958 |
| 45. | 17.93 ft | on 12-25-1961 |
| 46. | 17.90 ft | on 01-12-1953 |
| 47. | 17.89 ft | on 01-26-1947 |
| 48. | 17.87 ft | on 11-19-1946 |
| 49. | 17.85 ft | on 06-19-1974 |
| 50. | 17.83 ft | on 01-04-1997 |
| 51. | 17.82 ft | on 02-23-1986 |
| 52. | 17.78 ft | on 02-10-1990 |
| 53. | 17.76 ft | on 01-18-1975 |
| 54. | 17.70 ft | on 10-20-1947 |
| 55. | 17.68 ft | on 12-16-1959 |
| 56. | 17.64 ft | on 12-20-1953 |
| 57. | 17.56 ft | on 01-08-1983 |
| 58. | 17.53 ft | on 11-27-1950 |
| 59. | 17.52 ft | on 02-26-1957 |
| 60. | 17.49 ft | on 01-26-1964 |
| 61. | 17.49 ft | on 11-21-1960 |
| 62. | 17.47 ft | on 06-11-1955 |
| 63. | 17.47 ft | on 12-27-1972 |
| 64. | 17.36 ft | on 04-21-1958 |
| 65. | 17.36 ft | on 01-23-1953 |
| 66. | 17.35 ft | on 05-20-1956 |
| 67. | 17.33 ft | on 11-05-1955 |
| 68. | 17.33 ft | on 10-30-1955 |
| 69. | 17.32 ft | on 11-24-1986 |
| 70. | 17.26 ft | on 12-17-1939 |
| 71. | 17.24 ft | on 11-21-1958 |
| 72. | 17.12 ft | on 12-22-1934 |
| 73. | 17.11 ft | on 11-11-1955 |
| 74. | 17.07 ft | on 11-28-1937 |
| 75. | 17.06 ft | on 02-08-1955 |
| 76. | 16.97 ft | on 05-13-1949 |
| 77. | 16.90 ft | on 03-28-1943 |
| 78. | 16.76 ft | on 05-07-1966 |
| 79. | -1.00 ft | on 11-19-1911 |
Vertical Datum Table
| type | NGVD29 |
|---|---|
| major Flooding | N/A |
| moderate Flooding | N/A |
| minor Flooding | N/A |
| action | N/A |
| Latest Value | 237.80 ft |
| Gauge Zero | 226.60 ft |
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.