Gray Dam is an earth dam located in Montgomery County, Iowa, built in 1989. It carries a Low hazard potential classification.
Dam profile
NID height · 39 ft39 ft tall and 340 ft long, taller than 85% 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 Gray Dam
The primary purpose of Gray Dam 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 Dennis Gray (private). It impounds the Tr- West Nodaway River near Villisca.
The dam stands 39 feet tall and stretches 340 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 20 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1989, the structure is 37 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.
At 39 feet, this dam is taller than 85% of dams nationwide.
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Location
| State | Iowa |
| County | Montgomery |
| Nearest City | Villisca |
| River/Stream | Tr- West Nodaway River |
| Coordinates | 40.97610, -94.97580 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 39 ft |
| Dam Height | 39 ft |
| Dam Length | 340 ft |
| Year Completed | 1989 (37 years old) |
Storage & Hydraulics
| NID Storage | 20 acre-ft |
| Max Storage | 20 acre-ft |
| Normal Storage | 12 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Dennis Gray |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA02548 |
| Federal ID | IA02548 |
| More Info | State Dam Safety Program |