Crystal Lake Sediment Control Dam
Crystal Lake Sediment Control Dam is an earth dam located in Hancock County, Iowa, built in 2003. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Crystal Lake Sediment Control Dam
Crystal Lake Sediment Control Dam is a dam in Hancock, Iowa. The dam is owned by Iowa Department Of Natural Resources (state). It impounds the Tr- West Fork Iowa River near Crystal Lake.
The dam stands 27 feet tall and stretches 625 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 148 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2003, 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 06/04/2019.
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Location
| State | Iowa |
| County | Hancock |
| Nearest City | Crystal Lake |
| River/Stream | Tr- West Fork Iowa River |
| Coordinates | 43.23510, -93.78470 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 625 ft |
| Year Completed | 2003 (23 years old) |
Storage & Hydraulics
| NID Storage | 148 acre-ft |
| Max Storage | 148 acre-ft |
| Normal Storage | 89 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | Iowa Department of Natural Resources |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/04/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA03525 |
| Federal ID | IA03525 |
| More Info | State Dam Safety Program |