Sims Bayou’s watershed is located in southern Harris County. While most of the watershed is within the City of Houston, the upper reach drains the City of Missouri City and the lower reach drains the cities of South Houston and Pasadena. The watershed is almost fully developed, with the exception of some large tracts in the middle reaches near SH 288, and development is expected to continue at a fairly steady pace. The Harris County Flood Control District is currently partnering with the Corps of Engineers on the Sims Bayou Federal Project and has also constructed two regional stormwater detention basins in the upper reaches of the watershed that cover a total of about 418 acres. These projects will significantly reduce the risk of flooding along the bayou.
The lower reaches of Sims Bayou and its tributaries are unexpectedly wild and make for highly recommended canoeing opportunities. Milby Park, Charlton Park/Sims Bayou Urban Nature Center, Glenbrook Park, and Reveille Park all offer recreational opportunities and water access.