Central City Milldam is a gravity dam located in Linn County, Iowa, built in 1965. It carries a Low hazard potential classification.
Dam profile
NID height · 14 ft14 ft tall and 490 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Central City Milldam
The primary purpose of Central City Milldam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Linn County Conservation Board (local government). It impounds the Wapsipinicon River near Central City.
The dam stands 14 feet tall and stretches 490 feet across, creates a reservoir covering 25 acres, has a maximum storage capacity of 170 acre-feet, and collects water from a drainage area of 1,263 square miles. Completed in 1965, 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. The most recent inspection on record was 09/27/1989. That was over 37 years ago.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Iowa |
| County | Linn |
| Nearest City | Central City |
| River/Stream | Wapsipinicon River |
| Coordinates | 42.20460, -91.52820 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 490 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 170 acre-ft |
| Max Storage | 170 acre-ft |
| Normal Storage | 170 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 1,263 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Linn County Conservation Board |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 09/27/1989 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01271 |
| Federal ID | IA01271 |
| More Info | State Dam Safety Program |