Adel Milldam is a gravity dam located in Dallas County, Iowa, built in 1927. It carries a Low hazard potential classification.
Dam profile
NID height · 15 ft15 ft tall and 252 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 Adel Milldam
The primary purpose of Adel Milldam 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 City of Adel (local government). It impounds the North Raccoon River near Adel.
The dam stands 15 feet tall and stretches 252 feet across, creates a reservoir covering 170 acres, has a maximum storage capacity of 1,448 acre-feet, and collects water from a drainage area of 2,281 square miles. Completed in 1927, the structure is well-established, with more than 75 years of service.
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.
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Location
| State | Iowa |
| County | Dallas |
| Nearest City | Adel |
| River/Stream | North Raccoon River |
| Coordinates | 41.62030, -94.01350 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 252 ft |
| Year Completed | 1927 (99 years old) |
Storage & Hydraulics
| NID Storage | 1,448 acre-ft |
| Max Storage | 1,448 acre-ft |
| Normal Storage | 1,273 acre-ft |
| Surface Area | 170 acres |
| Drainage Area | 2,281 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Adel |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01267 |
| Federal ID | IA01267 |
| More Info | State Dam Safety Program |