Arnold-armstrong Subwtrshd Sta 243+48 is an earth dam located in Monona County, Iowa, built in 1962. It carries a Low hazard potential classification.
Dam profile
NID height · 26 ft26 ft tall and 398 ft long, taller than 55% 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 Arnold-armstrong Subwtrshd Sta 243+48
The primary purpose of Arnold-armstrong Subwtrshd Sta 243+48 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 26 feet tall and stretches 398 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 95 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1962, 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.
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Location
| State | Iowa |
| County | Monona |
| Nearest City | Castana |
| River/Stream | Dutch Creek |
| Coordinates | 42.12540, -95.88410 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 398 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 95 acre-ft |
| Max Storage | 95 acre-ft |
| Normal Storage | 18 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 5 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 assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA00782 |
| Federal ID | IA00782 |
| More Info | State Dam Safety Program |