Hanigan Dam
Hanigan Dam is an earth dam located in Monona County, Iowa, built in 2001. It carries a Low hazard potential classification.
About Hanigan Dam
The primary purpose of Hanigan 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 Larry Hanigan (private). It impounds the Tr- Willow Creek near Missouri Valley.
The dam stands 44 feet tall and stretches 720 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 62 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2001, 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.
At 44 feet, this dam is taller than 90% of dams nationwide.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Iowa |
| County | Monona |
| Nearest City | Missouri Valley |
| River/Stream | Tr- Willow Creek |
| Coordinates | 41.89330, -95.68000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 44 ft |
| Dam Height | 44 ft |
| Dam Length | 720 ft |
| Year Completed | 2001 (25 years old) |
Storage & Hydraulics
| NID Storage | 62 acre-ft |
| Max Storage | 62 acre-ft |
| Normal Storage | 17 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Larry Hanigan |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA03734 |
| Federal ID | IA03734 |
| More Info | State Dam Safety Program |