English Bench Watershed Site 1 is an earth dam located in Allamakee County, Iowa, built in 1969. It carries a Low hazard potential classification.
Dam profile
NID height · 34 ft34 ft tall and 470 ft long, taller than 78% 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 English Bench Watershed Site 1
The primary purpose of English Bench Watershed Site 1 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 Allamakee County Swcd (local government). It impounds the Tr-upper Iowa River near Mississippi River.
The dam stands 34 feet tall and stretches 470 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 150 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1969, 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 34 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Iowa |
| County | Allamakee |
| Nearest City | Mississippi River |
| River/Stream | Tr-upper Iowa River |
| Coordinates | 43.44880, -91.46720 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 470 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 150 acre-ft |
| Max Storage | 150 acre-ft |
| Normal Storage | 57 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Allamakee County Swcd |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA00081 |
| Federal ID | IA00081 |
| More Info | State Dam Safety Program |