Lynch Dam is an earth dam located in Davis County, Iowa, built in 2013. It carries a Low hazard potential classification.
Dam profile
NID height · 22 ft22 ft tall and 500 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 Lynch Dam
The primary purpose of Lynch Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Layson Lynch (private). It impounds the Tr-fox River near Mt. Sterling.
The dam stands 22 feet tall and stretches 500 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 56 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2013, the structure is relatively new.
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 | Davis |
| Nearest City | Mt. Sterling |
| River/Stream | Tr-fox River |
| Coordinates | 40.72440, -92.58530 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 500 ft |
| Year Completed | 2013 (13 years old) |
Storage & Hydraulics
| NID Storage | 56 acre-ft |
| Max Storage | 56 acre-ft |
| Normal Storage | 7 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Layson Lynch |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA04225 |
| Federal ID | IA04225 |
| More Info | State Dam Safety Program |