Sewage Lagoon is an earth dam located in Sweetwater County, Wyoming, built in 1976. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 12 ft12 ft tall and 3,900 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 Sewage Lagoon
Sewage Lagoon is a dam in Sweetwater, Wyoming. The dam is owned by Tata Chemicals North America (private). It impounds the None near Bryan See Remarks.
The dam stands 12 feet tall and stretches 3,900 feet across, creates a reservoir covering 18 acres, and has a maximum storage capacity of 148 acre-feet. Completed in 1976, the structure is 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 04/16/2024.
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Location
| State | Wyoming |
| County | Sweetwater |
| Nearest City | Bryan See Remarks |
| River/Stream | None |
| Coordinates | 41.60500, -109.73800 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 3,900 ft |
| Year Completed | 1976 (50 years old) |
Storage & Hydraulics
| NID Storage | 148 acre-ft |
| Max Storage | 148 acre-ft |
| Normal Storage | 148 acre-ft |
| Surface Area | 18 acres |
| Spillway Type | None |
Ownership & Safety
| Purpose | Other |
| Owner | Tata Chemicals North America |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 04/16/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01372 |
| Federal ID | WY01372 |
| More Info | State Dam Safety Program |