Griener Dam is an earth dam located in Keokuk County, Iowa, built in 1975. It carries a Low hazard potential classification.
Dam profile
NID height · 39 ft39 ft tall and 335 ft long, taller than 85% 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 Griener Dam
The primary purpose of Griener Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Leo Greiner (private). It impounds the Tr-clear Creek near Coppock.
The dam stands 39 feet tall and stretches 335 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 36 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1975, 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 39 feet, this dam is taller than 85% of dams nationwide.
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Location
| State | Iowa |
| County | Keokuk |
| Nearest City | Coppock |
| River/Stream | Tr-clear Creek |
| Coordinates | 41.28220, -91.98540 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 39 ft |
| Dam Height | 39 ft |
| Dam Length | 335 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 36 acre-ft |
| Max Storage | 36 acre-ft |
| Normal Storage | 27 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Leo Greiner |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01590 |
| Federal ID | IA01590 |
| More Info | State Dam Safety Program |