South Ricketts Flat
South Ricketts Flat is an earth dam located in Johnson County, Wyoming, built in 1972. It carries a Low hazard potential classification and has a fair condition assessment.
About South Ricketts Flat
The primary purpose of South Ricketts Flat is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Cat Creek Land, Llc (private). It impounds the Ricketts Flat Creek near Iberlin Road.
The dam stands 48 feet tall and stretches 777 feet across, creates a reservoir covering 20 acres, has a maximum storage capacity of 359 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1972, the structure is well into its service life at over 50 years old.
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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 08/10/2021.
At 48 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | Wyoming |
| County | Johnson |
| Nearest City | Iberlin Road |
| River/Stream | Ricketts Flat Creek |
| Coordinates | 44.09380, -106.23040 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 48 ft |
| Dam Height | 48 ft |
| Dam Length | 777 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 359 acre-ft |
| Max Storage | 359 acre-ft |
| Normal Storage | 236 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 7,438 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | CAT CREEK LAND, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 08/10/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY02404 |
| Federal ID | WY02404 |
| More Info | State Dam Safety Program |