Frd No 37, also known as Little Walnut Hickory WS Dam 37, is a vital structure located in Butler County, Kansas, specifically in the city of Douglass. Built in 1965, this earth dam stands at a height of 29.2 feet and serves primarily for flood risk reduction. With a maximum storage capacity of 1129.9 acre-feet and a normal storage of 89.5 acre-feet, Frd No 37 plays a crucial role in managing water resources in the area.

Managed by the local government, this dam is regulated by the Kansas Department of Agriculture and is subject to state inspections and enforcement. The hydraulic height of the dam is 26 feet, with a structural height of 29 feet and a length of 1680 feet. Despite its low hazard potential, Frd No 37 is considered to have moderate risk with a risk assessment rating of 3. Although the condition of the dam is not rated, it is essential for fire protection, stock, and small fish pond purposes in addition to its flood risk reduction function.

With a drainage area of 3.43 square miles and a maximum discharge of 875 cubic feet per second, Frd No 37 plays a crucial role in managing water flow in the South Branch Hickory Creek-TR stream. While the dam does not have outlet gates, its spillway width of 60 feet allows for controlled release of excess water during heavy rainfall events. Overall, Frd No 37 is a key piece of infrastructure in Butler County, Kansas, serving multiple purposes and ensuring the safety and protection of the surrounding community from potential flooding risks.