Long Lake
Long Lake is an earth dam located in Routt County, Colorado, built in 1942. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Long Lake
The primary purpose of Long Lake 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 Steamboat Springs (carr, Public Works Dire (local government). It impounds the South Fork Fish Creek-tr near Steamboat Springs.
The dam stands 20 feet tall and stretches 480 feet across, creates a reservoir covering 57 acres, has a maximum storage capacity of 595 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1942, the structure is well-established, with more than 75 years of service.
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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 08/04/2022.
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 Colorado 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 | Colorado |
| County | Routt |
| Nearest City | Steamboat Springs |
| River/Stream | South Fork Fish Creek-tr |
| Coordinates | 40.47584, -106.68834 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 480 ft |
| Year Completed | 1942 (84 years old) |
Storage & Hydraulics
| NID Storage | 595 acre-ft |
| Max Storage | 595 acre-ft |
| Normal Storage | 396 acre-ft |
| Surface Area | 57 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 297 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CITY OF STEAMBOAT SPRINGS (CARR, PUBLIC WORKS DIRE |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/04/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CO01917 |
| Federal ID | CO01917 |
| More Info | State Dam Safety Program |