Clear Creek is a small river in Southeast Texas

Southeast Texas

Southeast Texas is a subregion of East Texas located in the southeast corner of the U.S. state of Texas. The subregion is geographically centered around the Houston–Sugar Land–Baytown and Beaumont–Port Arthur metropolitan areas...

 in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

, which channels much of the run-off in southeast Harris County

Harris County, Texas

As of the 2010 Census, the population of the county was 4,092,459, White Americans made up 56.6% of Harris County's population; non-Hispanic whites represented 33.0% of the population. Black Americans made up 18.9% of the population. Native Americans made up 0.7% of Harris County's population...

 into Clear Lake

Clear Lake (Galveston Bay)

Clear Lake is a brackish lake located near Houston, Texas, USA in Harris County. The lake feeds Galveston Bay. It is bordered by Houston , Pasadena, League City, Clear Lake Shores, Taylor Lake Village, and El Lago, Texas...

 and Galveston Bay

Galveston Bay

Galveston Bay is a large estuary located along the upper coast of Texas in the United States. It is connected to the Gulf of Mexico and is surrounded by sub-tropic marshes and prairies on the mainland. The water in the Bay is a complex mixture of sea water and fresh water which supports a wide...

. Much of the length of the stream forms the boundary between Harris County and Galveston County

Galveston County, Texas

Galveston County is a county located in the U.S. state of Texas within the Houston–Sugar Land–Baytown metropolitan area. As of the 2010 U.S. Census, the population was 291,309. Its county seat is Galveston. League City is the largest city in Galveston County in terms of population; between...

. It originates in the Blue Ridge Oilfield in Fort Bend County

Fort Bend County, Texas

Fort Bend County is a county located along the Gulf Coast region in the U.S. state of Texas within the Houston–Sugar Land–Baytown metropolitan area. In 2000 its population was 354,452, while the 2010 U.S...

.

Water Quality

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

Texas Parks and Wildlife Department

The Texas Parks & Wildlife Department is a Texas state agency that oversees and protects wildlife and their habitats. In addition, the agency is responsible for managing the state's parks and historical areas...

 (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."