Dams in Whatcom County, Washington
30Total Dams
22High Hazard
1Significant
Dam Safety in Whatcom County, Washington
Whatcom County has 30 dams tracked in the National Inventory of Dams. Of these, 22 are classified as high hazard — meaning failure would probably cause loss of human life. Another 1 carry a significant hazard classification.
The average dam in Whatcom County is 54 years old. The most common purpose is recreation. The tallest dam is Ross at 540 ft.
Explore more: Oldest dams in Washington · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Ross | High | Satisfactory | 540 | Hydroelectric | 1949 |
| Diablo | High | Satisfactory | 389 | Hydroelectric | 1929 |
| Gorge | High | Satisfactory | 300 | Hydroelectric | 1961 |
| Upper Baker -auxiliary Dike | High | Satisfactory | 30 | Hydroelectric | |
| Hannegan Road Detention Basin | High | Satisfactory | 28 | Flood Risk Reduction | 1996 |
| Holiday Lake Dam | High | Fair | 23 | Recreation | 1967 |
| Lummi Island Estates Dam | High | Fair | 20 | Recreation | 1963 |
| St Clair Stormwater Detention Dam | High | Satisfactory | 20 | Flood Risk Reduction | 1986 |
| Whatcom Lake Dam | High | Satisfactory | 19 | Recreation | 1937 |
| Ferndale Aerated Sewage Lagoon No 3 | High | Satisfactory | 17 | Other | 1986 |
| Bagley | High | Not Rated | 16 | Other | 1927 |
| Louise Lake Dam | High | Satisfactory | 14 | Irrigation | 1972 |
| Telegraph Road Stormwater Detention Dam | High | Fair | 14 | Flood Risk Reduction | 1988 |
| Happy Valley Stormwater Detention Basin | High | Satisfactory | 14 | Flood Risk Reduction | 1981 |
| Padden Lake Dam | High | Satisfactory | 13 | Recreation | 1933 |
| Horton Road Detention Dam | High | Fair | 13 | Flood Risk Reduction | 1994 |
| Edaleen Dairy Waste Storage Pond No 3 | High | Fair | 12 | Other | 2007 |
| Bullard Dam | High | Satisfactory | 11 | Recreation | 1969 |
| Geneva Lake Dam | High | Satisfactory | 10 | Recreation | 1988 |
| Bellingham Airport Sw Detention Pond 3 | High | Satisfactory | 8 | Flood Risk Reduction | 2011 |
| Edaleen Dairy Waste Storage Pond No. 2 | High | Fair | 8 | Other | 1989 |
| Camping Dairy Lagoon Dam | High | Fair | 7 | Other | 1980 |
| Engelsma Dairy Lagoon Dam | Significant | Fair | 7 | Irrigation | 1994 |
| Smrekar Reservoir Dam | Low | 27 | Irrigation | 1954 | |
| Pumping Pond Dike | Low | Satisfactory | 22 | Hydroelectric | 1960 |
| Unruh Reservoir Dam | Low | 21 | Irrigation | 1959 | |
| Squires Lake Dam | Low | 15 | Irrigation | 1960 | |
| Glenhaven Lakes Dam | Low | 14 | Recreation | 1963 | |
| Baker Lake Dam | Low | 10 | Irrigation | 1966 | |
| West Lynden Regional Detention Facility | Low | 7 | Flood Risk Reduction | 2003 |