Erickson Dam No 2 is an earth dam located in San Juan County, Washington, built in 1964. It carries a Low hazard potential classification.
Dam profile
NID height · 14 ft14 ft tall and 218 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Erickson Dam No 2
The primary purpose of Erickson Dam No 2 is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Rainbow Lake Owners Association (private). It impounds the Tr-false Bay.
The dam stands 14 feet tall and stretches 218 feet across, creates a reservoir covering 47 acres, has a maximum storage capacity of 53 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1964, the structure is well into its service life at over 50 years old.
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. The most recent inspection on record was 01/13/2000. That was over 26 years ago.
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Location
| State | Washington |
| County | San Juan |
| River/Stream | Tr-false Bay |
| Coordinates | 48.54242, -123.07867 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Length | 218 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 53 acre-ft |
| Max Storage | 53 acre-ft |
| Normal Storage | 47 acre-ft |
| Surface Area | 47 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Rainbow Lake Owners Association |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 01/13/2000 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA00162 |
| Federal ID | WA00162 |
| More Info | State Dam Safety Program |