Crystal Lake Dam is an earth dam located in Clinton County, Iowa, built in 1900. It carries a Low hazard potential classification.
Dam profile
NID height · 24 ft24 ft tall and 490 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 Crystal Lake Dam
The primary purpose of Crystal Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Crystal Lake Country Club Association (private). It impounds the Crystal Creek near Dewitt.
The dam stands 24 feet tall and stretches 490 feet across, creates a reservoir covering 35 acres, has a maximum storage capacity of 465 acre-feet, and collects water from a drainage area of 9 square miles. Completed in 1900, 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. The most recent inspection on record was 10/07/1992. That was over 34 years ago.
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Location
| State | Iowa |
| County | Clinton |
| Nearest City | Dewitt |
| River/Stream | Crystal Creek |
| Coordinates | 41.81330, -90.57620 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 490 ft |
| Year Completed | 1900 (126 years old) |
Storage & Hydraulics
| NID Storage | 465 acre-ft |
| Max Storage | 465 acre-ft |
| Normal Storage | 210 acre-ft |
| Surface Area | 35 acres |
| Drainage Area | 9 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Crystal Lake Country Club Association |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/07/1992 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA02160 |
| Federal ID | IA02160 |
| More Info | State Dam Safety Program |