Tierney Dam is an earth dam located in Keokuk County, Iowa, built in 2002. It carries a Low hazard potential classification.
Dam profile
NID height · 14 ft14 ft tall and 500 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 Tierney Dam
Tierney Dam is a dam in Keokuk, Iowa. The dam is owned by Jeff & Pam Tierney (private). It impounds the Tributary of South Skunk River.
The dam stands 14 feet tall and stretches 500 feet across, and has a maximum storage capacity of 146 acre-feet. Completed in 2002, 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 | Keokuk |
| River/Stream | Tributary of South Skunk River |
| Coordinates | 41.23840, -92.05040 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 500 ft |
| Year Completed | 2002 (24 years old) |
Storage & Hydraulics
| NID Storage | 146 acre-ft |
| Max Storage | 146 acre-ft |
| Normal Storage | 134 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | Jeff & Pam Tierney |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA04480 |
| Federal ID | IA04480 |
| More Info | State Dam Safety Program |