Porter
Porter is an earth dam located in Teton County, Wyoming, built in 1951. It carries a Low hazard potential classification and has a poor condition assessment.
About Porter
The primary purpose of Porter is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Leeks Canyon Ranch, Llc (private). It impounds the Wallace Creek near Moose.
The dam stands 17 feet tall and stretches 245 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 52 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1951, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 07/12/2023.
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Location
| State | Wyoming |
| County | Teton |
| Nearest City | Moose |
| River/Stream | Wallace Creek |
| Coordinates | 43.80333, -110.38333 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 245 ft |
| Year Completed | 1951 (75 years old) |
Storage & Hydraulics
| NID Storage | 52 acre-ft |
| Max Storage | 52 acre-ft |
| Normal Storage | 52 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 420 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | LEEKS CANYON RANCH, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 07/12/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01270 |
| Federal ID | WY01270 |
| More Info | State Dam Safety Program |