Caylor Ranch Dam is an earth dam located in Fall River County, South Dakota, built in 1945. It carries a Significant hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 640 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 Caylor Ranch Dam
The primary purpose of Caylor Ranch 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 Indian Creek Cattle LLP (private). It impounds the Duck Creek.
The dam stands 12 feet tall and stretches 640 feet across, and has a maximum storage capacity of 86 acre-feet. Completed in 1945, the structure is well-established, with more than 75 years of service.
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 | South Dakota |
| County | Fall River |
| Nearest City | None |
| River/Stream | Duck Creek |
| Coordinates | 43.08396, -103.79397 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 640 ft |
| Year Completed | 1945 (81 years old) |
Storage & Hydraulics
| NID Storage | 86 acre-ft |
| Max Storage | 86 acre-ft |
| Normal Storage | 65 acre-ft |
| Max Discharge | 780 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Indian Creek Cattle LLP |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01396 |
| Federal ID | SD01396 |
| More Info | State Dam Safety Program |