Brown is an earth dam located in Campbell County, Wyoming, built in 1957. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 29 ft29 ft tall and 364 ft long, taller than 65% 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 Brown
The primary purpose of Brown is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by T Chair Land Company (private). It impounds the S Little Willow Cr near Arvada.
The dam stands 29 feet tall and stretches 364 feet across, creates a reservoir covering 6 acres, and has a maximum storage capacity of 81 acre-feet. Completed in 1957, 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 04/27/2023.
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Location
| State | Wyoming |
| County | Campbell |
| Nearest City | Arvada |
| River/Stream | S Little Willow Cr |
| Coordinates | 43.74056, -105.94889 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 364 ft |
| Year Completed | 1957 (69 years old) |
Storage & Hydraulics
| NID Storage | 81 acre-ft |
| Max Storage | 81 acre-ft |
| Normal Storage | 42 acre-ft |
| Surface Area | 6 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | T Chair Land Company |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 04/27/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00483 |
| Federal ID | WY00483 |
| More Info | State Dam Safety Program |