Mary Stead
Key Takeaway
Mary Stead is classified as low hazard in Wyoming. It was completed in 1909 and is 117 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 14 ft (taller than 8.9% in WY) |
| Dam Length | 710 ft |
| Dam Type | Earth |
| Max Storage | 302 acre-ft |
| Normal Storage | 210 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1909 (117 years old) |
| NID ID | WY00215 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
KRO VENTURES - KAREN OVERTON
Private
Nearby Dams
Dry Muddy
Natrona, WY
Low Hazard 19 ftNicolaysen No. 2
Natrona, WY
Low Hazard 20 ftWagner
Natrona, WY
Low Hazard 9 ftNicolaysen
Natrona, WY
Significant Hazard 22 ftEastgate
Natrona, WY
High Hazard 60 ftBentley
Natrona, WY
Low Hazard 26 ftLamb Lower
Natrona, WY
Low Hazard 28 ftCarroll No. 1
Natrona, WY
Low Hazard 24 ftFrequently Asked Questions
What is the hazard classification of Mary Stead?
Mary Stead is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Mary Stead?
Mary Stead is owned by KRO VENTURES - KAREN OVERTON (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Mary Stead built?
Mary Stead was completed in 1909, making it 117 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Mary Stead?
Mary Stead serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Mary Stead?
Mary Stead has a dam height of 14 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Mary Stead last inspected?
Mary Stead was last inspected on September 6, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.