Davis Run is a tributary of Catawissa Creek in Schuylkill County, Pennsylvania, in the United States. It is approximately 1.2 miles (1.9 km) long. The watershed of the stream has an area of 2.86 square miles (7.4 km2). The stream is considered to be a High-Quality Coldwater Fishery and Class A Wild Trout Waters. Six species of fish inhabit the stream, including brown trout and brook trout. The main rock formations in the stream's watershed are the Mauch Chunk Formation and the Pottsville Formation and the main soils are the Leck Kill soil and the Hezleton soil. The stream has two unnamed tributaries and a lake known as the Pumping Station Reservoir.