Arnold-armstrong Subwtrshd Sta 171+55
Arnold-armstrong Subwtrshd Sta 171+55 is an earth dam located in Monona County, Iowa, built in 1963. It carries a Low hazard potential classification.
About Arnold-armstrong Subwtrshd Sta 171+55
The primary purpose of Arnold-armstrong Subwtrshd Sta 171+55 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 Monona County Swcd (local government). It impounds the Dutch Creek near Castana.
The dam stands 36 feet tall and stretches 314 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 104 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1963, 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.
At 36 feet, this dam is taller than 83% of dams nationwide.
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Location
| State | Iowa |
| County | Monona |
| Nearest City | Castana |
| River/Stream | Dutch Creek |
| Coordinates | 42.14330, -95.87720 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 36 ft |
| Dam Length | 314 ft |
| Year Completed | 1963 (63 years old) |
Storage & Hydraulics
| NID Storage | 104 acre-ft |
| Max Storage | 104 acre-ft |
| Normal Storage | 65 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 2 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Monona County SWCD |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA00784 |
| Federal ID | IA00784 |
| More Info | State Dam Safety Program |