Henry No. 1 Stock is an earth dam located in Johnson County, Wyoming, built in 1967. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 28 ft28 ft tall and 560 ft long, taller than 62% of U.S. dams with a recorded height. 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 Henry No. 1 Stock
The primary purpose of Henry No. 1 Stock is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Powder River Livestock Co. (private). It impounds the Kinney Draw near Arvada.
The dam stands 28 feet tall and stretches 560 feet across, creates a reservoir covering 10 acres, and has a maximum storage capacity of 131 acre-feet. Completed in 1967, 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 07/13/2023.
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Location
| State | Wyoming |
| County | Johnson |
| Nearest City | Arvada |
| River/Stream | Kinney Draw |
| Coordinates | 44.41278, -106.20944 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 560 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 131 acre-ft |
| Max Storage | 131 acre-ft |
| Normal Storage | 70 acre-ft |
| Surface Area | 10 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Powder River Livestock Co. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 07/13/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00554 |
| Federal ID | WY00554 |
| More Info | State Dam Safety Program |