Held Watershed Site D-4 is an earth dam located in Plymouth County, Iowa, built in 1978. It carries a Low hazard potential classification.
Dam profile
NID height · 33 ft33 ft tall and 450 ft long, taller than 76% 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 Held Watershed Site D-4
The primary purpose of Held Watershed Site D-4 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 Plymouth County Swcd (local government). It impounds the Tr-floyd River near Hinton.
The dam stands 33 feet tall and stretches 450 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 123 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1978, the structure is 48 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 33 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Iowa |
| County | Plymouth |
| Nearest City | Hinton |
| River/Stream | Tr-floyd River |
| Coordinates | 42.63440, -96.32360 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 450 ft |
| Year Completed | 1978 (48 years old) |
Storage & Hydraulics
| NID Storage | 123 acre-ft |
| Max Storage | 123 acre-ft |
| Normal Storage | 37 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 | Plymouth County Swcd |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01855 |
| Federal ID | IA01855 |
| More Info | State Dam Safety Program |