Marsh and Company No. 7 is an earth dam located in Carbon County, Wyoming, built in 1917. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 25 ft25 ft tall and 390 ft long, taller than 50% 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 Marsh and Company No. 7
The primary purpose of Marsh and Company No. 7 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Ferris Mountain Ranch (gary Raymond) (private). It impounds the Muddy Creek near Hwy 220.
The dam stands 25 feet tall and stretches 390 feet across, creates a reservoir covering 6 acres, and has a maximum storage capacity of 182 acre-feet. Completed in 1917, the structure is over a century 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. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 10/05/2021.
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Location
| State | Wyoming |
| County | Carbon |
| Nearest City | Hwy 220 |
| River/Stream | Muddy Creek |
| Coordinates | 42.24320, -107.37500 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 390 ft |
| Year Completed | 1917 (109 years old) |
Storage & Hydraulics
| NID Storage | 182 acre-ft |
| Max Storage | 182 acre-ft |
| Normal Storage | 152 acre-ft |
| Surface Area | 6 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Ferris Mountain Ranch (gary Raymond) |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 10/05/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01770 |
| Federal ID | WY01770 |
| More Info | State Dam Safety Program |