Scales #3 (Upper) is a significant irrigation structure located in Grand Junction, Colorado, along the KahNah Creek.
Wind
Humidity
Built in 1969, this earth dam stands at 9 feet tall and has a storage capacity of 242 acre-feet, serving the primary purpose of irrigation. With a surface area of 45 acres and a maximum discharge of 681 cubic feet per second, the dam is regulated by the Colorado Department of Water Resources, ensuring regular inspections and enforcement of safety measures.
Despite its low hazard potential and fair condition assessment, Scales #3 (Upper) poses a high risk due to its age and the potential impact of failure on downstream areas. The dam's emergency action plan was last revised in 2015, and it meets safety guidelines, although inundation maps and risk management measures may need further attention. With a designated inspection frequency of every 6 years, the dam's condition is closely monitored to ensure its continued safety and functionality for the local community's water resource needs.
Year Completed |
1969 |
Dam Length |
350 |
Dam Height |
7 |
River Or Stream |
KAHNAH CREEK-TR |
Primary Dam Type |
Earth |
Surface Area |
45 |
Hydraulic Height |
7 |
Nid Storage |
242 |
Structural Height |
9 |
Outlet Gates |
Uncontrolled, Valve |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
9 |