Monticello Lake is an earth dam located in San Juan County, Utah, built in 1954. It carries a Significant hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall and 327 ft long, taller than 50% of U.S. dams with a recorded height. 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 Monticello Lake
The primary purpose of Monticello Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Division of Wildlife Resources (state). It impounds the Spring Creek--offstream near Monticello.
The dam stands 25 feet tall and stretches 327 feet across, has a maximum storage capacity of 62 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1954, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 09/26/2023.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Utah |
| County | San Juan |
| Nearest City | Monticello |
| River/Stream | Spring Creek--offstream |
| Coordinates | 37.89684, -109.46734 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Length | 327 ft |
| Year Completed | 1954 (72 years old) |
Storage & Hydraulics
| NID Storage | 62 acre-ft |
| Max Storage | 62 acre-ft |
| Normal Storage | 27 acre-ft |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Division of Wildlife Resources |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 09/26/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | UT00218 |
| Federal ID | UT00218 |
| More Info | State Dam Safety Program |