Cannon Dam
Cannon Dam is an earth dam located in Lyman County, South Dakota, built in 2009. It carries a Low hazard potential classification.
About Cannon Dam
The primary purpose of Cannon Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Robert Cannon (private). It impounds the Mill Iron Creek.
The dam stands 13 feet tall and stretches 1,117 feet across, creates a reservoir covering 23 acres, has a maximum storage capacity of 485 acre-feet, and collects water from a drainage area of 17 square miles. Completed in 2009, 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 | South Dakota |
| County | Lyman |
| River/Stream | Mill Iron Creek |
| Coordinates | 43.77673, -100.00254 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 13 ft |
| Dam Height | 13 ft |
| Dam Length | 1,117 ft |
| Year Completed | 2009 (17 years old) |
Storage & Hydraulics
| NID Storage | 485 acre-ft |
| Max Storage | 485 acre-ft |
| Normal Storage | 83 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 17 sq mi |
| Max Discharge | 3,400 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | ROBERT CANNON |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02582 |
| Federal ID | SD02582 |
| More Info | State Dam Safety Program |