Sinnard
Sinnard is an earth dam located in Goshen County, Wyoming, built in 1935. It carries a Significant hazard potential classification and has a fair condition assessment.
About Sinnard
The primary purpose of Sinnard is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Horse Creek Conservation District (private). It impounds the Sinnard Draw near Morrill Neb.
The dam stands 26 feet tall and stretches 1,350 feet across, creates a reservoir covering 161 acres, and has a maximum storage capacity of 1,679 acre-feet. Completed in 1935, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in 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 05/21/2022.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Wyoming |
| County | Goshen |
| Nearest City | Morrill Neb |
| River/Stream | Sinnard Draw |
| Coordinates | 41.80780, -104.34650 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 1,350 ft |
| Year Completed | 1935 (91 years old) |
Storage & Hydraulics
| NID Storage | 1,679 acre-ft |
| Max Storage | 1,679 acre-ft |
| Normal Storage | 1,358 acre-ft |
| Surface Area | 161 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | HORSE CREEK CONSERVATION DISTRICT |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 05/21/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00122 |
| Federal ID | WY00122 |
| More Info | State Dam Safety Program |