Stillhouse Hollow Lake is a U.S. Army Corps of Engineers reservoir on the Lampasas River in the Brazos River basin, 5 miles (8 km) southwest of Belton, Texas, USA. Stillhouse Hollow Dam and the reservoir are both managed by the Fort Worth District of the U.S. Army Corps of Engineers. The reservoir was officially impounded in 1968, and serves to provide flood control for the communities downstream. The lake also functions as a water supply for several of the surrounding communities. Stillhouse Hollow Lake is a popular recreational destination.
In addition to maintaining the dam that creates the reservoir, the U.S. Army Corps of Engineers maintains recreational facilities at the lake. Dana Peak Park and Union Grove Park are both developed US Army Corps of Engineers parks open to the public. Boating and fishing are very popular.