Nielsen Dam A
Nielsen Dam A is an earth dam located in Snohomish County, Washington, built in 1950. It carries a Low hazard potential classification.
About Nielsen Dam A
The primary purpose of Nielsen Dam A is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by N C N Partnership (private). It impounds the Tr-sammamish River near Bothell.
The dam stands 15 feet tall, creates a reservoir covering 45 acres, has a maximum storage capacity of 73 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1950, the structure is well-established, with more than 75 years of service.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
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Location
| State | Washington |
| County | Snohomish |
| Nearest City | Bothell |
| River/Stream | Tr-sammamish River |
| Coordinates | 47.77842, -122.21719 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 73 acre-ft |
| Max Storage | 73 acre-ft |
| Normal Storage | 45 acre-ft |
| Surface Area | 45 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 16 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | N C N Partnership |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA00526 |
| Federal ID | WA00526 |
| More Info | State Dam Safety Program |