Cedar Rapids Milldam Iel&p is a gravity dam located in Linn County, Iowa, built in 1967. It carries a Low hazard potential classification.
Dam profile
NID height · 8 ft8 ft tall and 685 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 Cedar Rapids Milldam Iel&p
The primary purpose of Cedar Rapids Milldam Iel&p is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Iowa Electric Light & Power Co (local government). It impounds the Cedar River near Cedar Rapids.
The dam stands 8 feet tall and stretches 685 feet across, creates a reservoir covering 2,380 acres, has a maximum storage capacity of 1,440 acre-feet, and collects water from a drainage area of 6,726 square miles. Completed in 1967, 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 10/11/1989. That was over 37 years ago.
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Location
| State | Iowa |
| County | Linn |
| Nearest City | Cedar Rapids |
| River/Stream | Cedar River |
| Coordinates | 41.94460, -91.63020 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 685 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 1,440 acre-ft |
| Max Storage | 1,440 acre-ft |
| Normal Storage | 840 acre-ft |
| Surface Area | 2,380 acres |
| Drainage Area | 6,726 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Iowa Electric Light & Power Co |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/11/1989 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01270 |
| Federal ID | IA01270 |
| More Info | State Dam Safety Program |