Callahan Creek Watershed A-2
Callahan Creek Watershed A-2 is an earth dam located in Boone County, Missouri, built in 1975. It carries a Significant hazard potential classification.
About Callahan Creek Watershed A-2
The primary purpose of Callahan Creek Watershed A-2 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 Callahan Wrsd Subdistric (local government). It impounds the Tr-callahan Creek near Mcbaine.
The dam stands 29 feet tall and stretches 620 feet across, creates a reservoir covering 14 acres, has a maximum storage capacity of 240 acre-feet, and collects water from a drainage area of 256 square miles. Completed in 1975, 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.
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Location
| State | Missouri |
| County | Boone |
| Nearest City | Mcbaine |
| River/Stream | Tr-callahan Creek |
| Coordinates | 39.08719, -92.45241 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 620 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 240 acre-ft |
| Max Storage | 240 acre-ft |
| Normal Storage | 23 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 256 sq mi |
| Max Discharge | 490 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | CALLAHAN WRSD SUBDISTRIC |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MO50031 |
| Federal ID | MO50031 |
| More Info | State Dam Safety Program |