Arroyo Colorado: A Compilation and Evaluation of Prior Studies and Data

Abstract

This report was compiled per the project, “Arroyo Colorado Agricultural Nonpoint Source Assessment” funded by the TSSWCB through the CWA §319(h) NPS Grant Program. Under this project, TWRI was tasked to (1) compile historical water quality data and information from previous studies and conduct a detailed analysis of the most significant water quality parameters to investigate the trends and the different biological and physical process taking place in the watershed that contribute to changes in water quality in the Arroyo; (2) organize the results from the earlier non-point source pollution projects conducted in the Arroyo Colorado watershed and summarize the results and conclusions of these studies; and 3) identify critical data gaps that should be filled.