Synnes Dam; Marvin 2 is an earth dam located in Dunn County, North Dakota, built in 2012. It carries a Low hazard potential classification.
Dam profile
NID height · 16 ft16 ft tall and 630 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 Synnes Dam; Marvin 2
The primary purpose of Synnes Dam; Marvin 2 is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Marvin Synnes (private). It impounds the Knife River-tr near N.
The dam stands 16 feet tall and stretches 630 feet across, creates a reservoir covering 9 acres, and has a maximum storage capacity of 89 acre-feet. Completed in 2012, the structure is relatively new.
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 | North Dakota |
| County | Dunn |
| Nearest City | N |
| River/Stream | Knife River-tr |
| Coordinates | 47.21465, -102.54896 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 630 ft |
| Year Completed | 2012 (14 years old) |
Storage & Hydraulics
| NID Storage | 89 acre-ft |
| Max Storage | 89 acre-ft |
| Normal Storage | 40 acre-ft |
| Surface Area | 9 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Marvin Synnes |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ND01083 |
| Federal ID | ND01083 |
| More Info | State Dam Safety Program |