Ryan Henschal Watershed Site E-2 is an earth dam located in Pottawattamie County, Iowa, built in 1963. It carries a Low hazard potential classification.
Dam profile
NID height · 49 ft49 ft tall and 850 ft long, taller than 92% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Ryan Henschal Watershed Site E-2
The primary purpose of Ryan Henschal Watershed Site E-2 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 49 feet tall and stretches 850 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 237 acre-feet, and collects water from a drainage area of 1 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. The most recent inspection on record was 09/25/2003. That was over 23 years ago.
At 49 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | Iowa |
| County | Pottawattamie |
| Nearest City | Council Bluffs |
| River/Stream | Tr-mosquito Creek |
| Coordinates | 41.36480, -95.71790 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 49 ft |
| Dam Height | 49 ft |
| Dam Length | 850 ft |
| Year Completed | 1963 (63 years old) |
Storage & Hydraulics
| NID Storage | 237 acre-ft |
| Max Storage | 237 acre-ft |
| Normal Storage | 83 acre-ft |
| Surface Area | 6 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 | IA00942 |
| Federal ID | IA00942 |
| More Info | State Dam Safety Program |