Located in Elbert, Colorado, the Big Sandy Creek Watershed N-23, also known as Lasater North, is a local government-owned structure designed by USDA NRCS for flood risk reduction. The dam, completed in 1959, stands at a height of 24 feet and has a hydraulic height of 25 feet, with a structural height of 29 feet. It spans 1445 feet and has a storage capacity of 704 acre-feet, serving the primary purpose of flood risk reduction in the area. The dam is regulated by the Colorado Department of Water Resources and undergoes regular inspections to ensure its satisfactory condition and low hazard potential.

Situated in the Big Sandy Creek-TR, the dam plays a crucial role in managing water resources in the region, with a maximum discharge capacity of 2586 cubic feet per second. Despite its moderate risk assessment, the dam has been deemed to meet safety guidelines and is equipped with an uncontrolled spillway to manage excess water flow. With a drainage area of 5 square miles, the dam covers a surface area of 52 acres and provides essential flood protection to the surrounding city of Matheson. Enthusiasts interested in water resource management and climate resilience will find the Big Sandy Creek Watershed N-23 an intriguing example of infrastructure designed to mitigate flood risks and safeguard local communities against natural disasters.