Isom
Isom is an earth dam located in Uinta County, Wyoming, built in 1976. It carries a Low hazard potential classification.
About Isom
The primary purpose of Isom is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Stephen Isom (private). It impounds the Austin Wash, Tr Black Rock Drw near Granger.
The dam stands 20 feet tall and stretches 1,790 feet across, creates a reservoir covering 268 acres, has a maximum storage capacity of 3,635 acre-feet, and collects water from a drainage area of 9 square miles. 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. The most recent inspection on record was 10/23/2009. That was over 16 years ago.
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Location
| State | Wyoming |
| County | Uinta |
| Nearest City | Granger |
| River/Stream | Austin Wash, Tr Black Rock Drw |
| Coordinates | 41.41500, -110.28583 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 1,790 ft |
| Year Completed | 1976 (50 years old) |
Storage & Hydraulics
| NID Storage | 3,635 acre-ft |
| Max Storage | 3,635 acre-ft |
| Normal Storage | 2,295 acre-ft |
| Surface Area | 268 acres |
| Drainage Area | 9 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | STEPHEN ISOM |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 10/23/2009 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01709 |
| Federal ID | WY01709 |
| More Info | State Dam Safety Program |