Lynnville Dam is a gravity dam located in Jasper County, Iowa, built in 1918. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 84 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 Lynnville Dam
The primary purpose of Lynnville Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Jasper County Conservation Board (local government). It impounds the North Skunk River near Lynnville.
The dam stands 12 feet tall and stretches 84 feet across, creates a reservoir covering 33 acres, has a maximum storage capacity of 200 acre-feet, and collects water from a drainage area of 287 square miles. Completed in 1918, 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.
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Location
| State | Iowa |
| County | Jasper |
| Nearest City | Lynnville |
| River/Stream | North Skunk River |
| Coordinates | 41.58100, -92.78300 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 84 ft |
| Year Completed | 1918 (108 years old) |
Storage & Hydraulics
| NID Storage | 200 acre-ft |
| Max Storage | 200 acre-ft |
| Normal Storage | 200 acre-ft |
| Surface Area | 33 acres |
| Drainage Area | 287 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Jasper County Conservation Board |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA03063 |
| Federal ID | IA03063 |
| More Info | State Dam Safety Program |