Marx Reservoir #1 is an earth dam located in Polk County, Oregon, built in 1964. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 500 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 Marx Reservoir #1
The primary purpose of Marx Reservoir #1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Mike Sweeney, Cherry Hill Winery (private). It impounds the MUD Slough-mcmahon Branch near Salem.
The dam stands 30 feet tall and stretches 500 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 49 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 05/08/2018.
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Location
| State | Oregon |
| County | Polk |
| Nearest City | Salem |
| River/Stream | MUD Slough-mcmahon Branch |
| Coordinates | 44.99330, -123.18812 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 27 ft |
| Dam Length | 500 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 85 acre-ft |
| Max Storage | 49 acre-ft |
| Normal Storage | 85 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 25 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Mike Sweeney, Cherry Hill Winery |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/08/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00389 |
| Federal ID | OR00389 |
| More Info | State Dam Safety Program |