Located in Weld County, Colorado, Oklahoma Lake, also known as Big Cut Lateral, is a privately-owned reservoir used primarily for irrigation purposes. With a dam height of 18 feet and a capacity of 493 acre-feet, it serves as a vital water source for agricultural activities in the region. The lake was completed in 1891 and is regulated by the Colorado Division of Water Resources, ensuring its proper maintenance and operation.

Aside from irrigation, Oklahoma Lake also offers recreational opportunities for the local community, covering a surface area of 40 acres and nestled along the Big Thompson River. Its low hazard potential and satisfactory condition assessment make it a safe and reliable water resource for both irrigation and leisure activities. The dam features an uncontrolled spillway and has a maximum discharge capacity of 150 cubic feet per second.

Despite being a modest-sized reservoir, Oklahoma Lake plays a crucial role in supporting the agricultural sector in Weld County and contributes to the overall water management efforts in the region. With its historical significance dating back over a century, this reservoir continues to be a valuable asset for water resource and climate enthusiasts interested in sustainable water use and management practices.