Ryan Henschal Watershed Site F-3 is an earth dam located in Pottawattamie County, Iowa, built in 1964. It carries a Low hazard potential classification.
Dam profile
NID height · 32 ft32 ft tall and 300 ft long, taller than 74% 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 Ryan Henschal Watershed Site F-3
The primary purpose of Ryan Henschal Watershed Site F-3 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 West Pottawattamie County Swcd (local government). It impounds the Tr-mosquito Creek near Council Bluffs.
The dam stands 32 feet tall and stretches 300 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 50 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1964, 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. The most recent inspection on record was 09/25/2003. That was over 23 years ago.
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Location
| State | Iowa |
| County | Pottawattamie |
| Nearest City | Council Bluffs |
| River/Stream | Tr-mosquito Creek |
| Coordinates | 41.38240, -95.75040 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 300 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 34 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | West Pottawattamie County Swcd |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 09/25/2003 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA00939 |
| Federal ID | IA00939 |
| More Info | State Dam Safety Program |