Basin #1 is a vital water resource located in Delta, Colorado, primarily serving the purpose of water supply for irrigation and other domestic uses. This earth dam structure, completed in 1949, stands at a height of 18 feet and has a storage capacity of 538 acre-feet, with a normal storage level of 258 acre-feet. Situated on Dirty George Creek, this basin covers a surface area of 56 acres and has a drainage area of 1 square mile.

Despite being classified as having a low hazard potential and a satisfactory condition assessment, Basin #1 poses a high risk level due to its location and other factors. The dam does not have a spillway, but is equipped with slide and uncontrolled outlet gates. The last inspection in August 2020 reported satisfactory conditions, and the dam is regulated, permitted, inspected, and enforced by the Colorado Department of Water Resources.

This basin, managed by the local government, remains a crucial water source in the region, ensuring water availability for agricultural and domestic needs. With its historical significance and strategic location, Basin #1 plays a crucial role in water resource management and climate resilience efforts in the area.