Allison Dam is an earth dam located in Butler County, Kansas, built in 1970. It carries a Significant hazard potential classification.
Dam profile
NID height · 22 ft22 ft tall and 600 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 Allison Dam
The primary purpose of Allison Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Myers Trust (private). It impounds the West Branch Walnut River-tr near El Dorado.
The dam stands 22 feet tall and stretches 600 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 64 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1970, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. The most recent inspection on record was 10/03/2007. That was over 19 years ago.
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Location
| State | Kansas |
| County | Butler |
| Nearest City | El Dorado |
| River/Stream | West Branch Walnut River-tr |
| Coordinates | 37.87046, -96.84398 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 20 ft |
| Dam Length | 600 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 64 acre-ft |
| Max Storage | 64 acre-ft |
| Normal Storage | 27 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Myers Trust |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 10/03/2007 |
| Emergency Action Plan | No |
Identifiers
| NID ID | KS04786 |
| Federal ID | KS04786 |
| More Info | State Dam Safety Program |