Grinnell
Key Takeaway
Grinnell is classified as low hazard in Wyoming. It was completed in 1919 and is 107 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 8 ft (taller than 0.8% in WY) |
| Dam Length | 930 ft |
| Dam Type | Earth |
| Max Storage | 310 acre-ft |
| Normal Storage | 196 acre-ft |
| Surface Area | 41 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1919 (107 years old) |
| Year Modified | 1985 |
| NID ID | WY00319 |
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
Q CREEK LAND & LIVESTOCK COMPANY LLC
Private
Nearby Dams
Frequently Asked Questions
What is the hazard classification of Grinnell?
Grinnell 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 Grinnell?
Grinnell is owned by Q CREEK LAND & LIVESTOCK COMPANY LLC (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Grinnell built?
Grinnell was completed in 1919, making it 107 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 Grinnell?
Grinnell serves the following purposes: Irrigation, Fish And Wildlife Pond. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Grinnell?
Grinnell has a dam height of 8 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 Grinnell last inspected?
Grinnell was last inspected on May 28, 2020. Inspection dates indicate when a formal review occurred, not the results of that inspection.