The Basin Highlights Report provides annual updates of the findings and activities conducted by San Antonio River Authority for the San Antonio River Basin in cooperation with the Texas Commission on Environmental Quality (TCEQ) under the State of Texas Clean Rivers Program (CRP). This report includes an overview of basin water quality monitoring activities; a review of water quality data; a discussion of activities and findings for special studies; maps showing the location of sampling sites; a discussion of participation of other organizations in the basin monitoring program; and public outreach activities.