Isakson Reservoir is an earth dam located in Clackamas County, Oregon, built in 1972. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 384 ft long, taller than 68% of U.S. dams with a recorded height. 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 Isakson Reservoir
The primary purpose of Isakson Reservoir is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Jerry Isakson (private). It impounds the Unnamed near Sandy.
The dam stands 30 feet tall and stretches 384 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 29 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1972, 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 05/16/2018.
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Location
| State | Oregon |
| County | Clackamas |
| Nearest City | Sandy |
| River/Stream | Unnamed |
| Coordinates | 45.37247, -122.26368 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 27 ft |
| Dam Length | 384 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 29 acre-ft |
| Max Storage | 29 acre-ft |
| Normal Storage | 29 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 54 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Jerry Isakson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/16/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00674 |
| Federal ID | OR00674 |
| More Info | State Dam Safety Program |