Clear Creek is a small river in Southeast Texas in the United States, which channels much of the run-off in southeast Harris County into Clear Lake and Galveston Bay. Much of the length of the stream forms the boundary between Harris County and Galveston County. It originates in the Blue Ridge Oilfield in Fort Bend County.
Pollution has become a concern in recent years owing to the oil field as well as the high population growth of the region.The Texas Parks and Wildlife Department (TPWD) has issued a Fish Consumption Advisory for Clear Creek due to the presence of polychlorinated biphenyls (PCBs). The advisory states "Persons should not consume any species of fish from these waters."