Anamosa
Anamosa is a gravity dam located in Jones County, Iowa, built in 1909. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Anamosa
The primary purpose of Anamosa is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Up Hydro, Llc (public utility). It impounds the Wapsipinicon River near Anamosa.
The dam stands 12 feet tall and stretches 228 feet across, creates a reservoir covering 120 acres, has a maximum storage capacity of 650 acre-feet, and collects water from a drainage area of 1,662 square miles. Completed in 1909, the structure is over a century 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 05/29/2019.
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Location
| State | Iowa |
| County | Jones |
| Nearest City | Anamosa |
| River/Stream | Wapsipinicon River |
| Coordinates | 42.10330, -91.29170 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 228 ft |
| Year Completed | 1909 (117 years old) |
Storage & Hydraulics
| NID Storage | 650 acre-ft |
| Max Storage | 650 acre-ft |
| Normal Storage | 650 acre-ft |
| Surface Area | 120 acres |
| Drainage Area | 1,662 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | UP Hydro, LLC |
| Owner Type | Public Utility |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/29/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01305 |
| Federal ID | IA01305 |
| More Info | State Dam Safety Program |