Enlargement Of Worthen Meadows
Enlargement Of Worthen Meadows is an earth dam located in Fremont County, Wyoming, built in 1958. It carries a High hazard potential classification.
About Enlargement Of Worthen Meadows
The primary purpose of Enlargement Of Worthen Meadows is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City Of Lander (local government). It impounds the Roaring Fork Creek near Lander.
The dam stands 46 feet tall and stretches 850 feet across, creates a reservoir covering 92 acres, has a maximum storage capacity of 2,516 acre-feet, and collects water from a drainage area of 12 square miles. Completed in 1958, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. An emergency action plan is in place for this dam. The most recent inspection on record was 07/10/2025.
At 46 feet, this dam is taller than 91% of dams nationwide.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Wyoming dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Wyoming |
| County | Fremont |
| Nearest City | Lander |
| River/Stream | Roaring Fork Creek |
| Coordinates | 42.70150, -108.91840 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 46 ft |
| Dam Height | 46 ft |
| Dam Length | 850 ft |
| Year Completed | 1958 (68 years old) |
Storage & Hydraulics
| NID Storage | 2,516 acre-ft |
| Max Storage | 2,516 acre-ft |
| Normal Storage | 1,504 acre-ft |
| Surface Area | 92 acres |
| Drainage Area | 12 sq mi |
| Max Discharge | 3,972 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CITY OF LANDER |
| Owner Type | Local Government |
| Hazard Classification | High |
| Last Inspection | 07/10/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WY01058 |
| Federal ID | WY01058 |
| More Info | State Dam Safety Program |