Clark Dam is an earth dam located in Iowa County, Iowa, built in 2023. It carries a Low hazard potential classification.
Dam profile
NID height · 22 ft22 ft tall and 800 ft long. 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 Clark Dam
The primary purpose of Clark Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Austin Blythe Revocable Trust (private). It impounds the Unnamed Tributary near Hills.
The dam stands 22 feet tall and stretches 800 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 139 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2023, the structure is relatively new.
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 | Iowa |
| Nearest City | Hills |
| River/Stream | Unnamed Tributary |
| Coordinates | 41.62140, -91.98620 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 800 ft |
| Year Completed | 2023 (3 years old) |
Storage & Hydraulics
| NID Storage | 139 acre-ft |
| Max Storage | 139 acre-ft |
| Normal Storage | 35 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 45 cfs |
| Spillway Type | None |
Ownership & Safety
| Purpose | Recreation |
| Owner | Austin Blythe Revocable Trust |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA04370 |
| Federal ID | IA04370 |
| More Info | State Dam Safety Program |