Feldspar
Feldspar is an earth dam located in Johnson County, Wyoming, built in 2009. It carries a Low hazard potential classification and has a fair condition assessment.
About Feldspar
The primary purpose of Feldspar is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by 49 Ranch, Llc (private). It impounds the Grapnel Draw near I-90.
The dam stands 43 feet tall and stretches 820 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 108 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2009, the structure is relatively new.
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 08/01/2019.
At 43 feet, this dam is taller than 89% of dams nationwide.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Wyoming |
| County | Johnson |
| Nearest City | I-90 |
| River/Stream | Grapnel Draw |
| Coordinates | 44.21334, -106.35972 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 43 ft |
| Dam Height | 34 ft |
| Dam Length | 820 ft |
| Year Completed | 2009 (17 years old) |
Storage & Hydraulics
| NID Storage | 108 acre-ft |
| Max Storage | 108 acre-ft |
| Normal Storage | 63 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 231 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | 49 RANCH, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 08/01/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY02484 |
| Federal ID | WY02484 |
| More Info | State Dam Safety Program |