where is addicks dam located
WATERSHED OVERVIEW. The Addicks Reservoir watershed is located in western Harris County with a small portion crossing into eastern Waller County. Rainfall within the 138 square miles of the Addicks Reservoir watershed drains to the watershedâs primary waterway, Langham Creek (U100-00-00).ainfall within the 138 square miles of the Addicks Reservoir watershed drains to the watershedâs primary waterway, Langham Creek (U100-00-00).