Water quality, ambient toxicity and biological investigations in the Houston ship channel and tidal San Jacinto river.

This investigation included sampling of five water quality segments: 1007, 1006, 1005, 1001, and 2422. The overall purpose of the study was to characterize water quality of the Houston Ship Channel and tidal San Jacinto River, particularly with relation to toxic substances and ambient toxicity. The primary objective was to collect and chemically analyze ambient water for EPA priority pollutants and conduct ambient toxicity using short-term chronic marine testing protocols. Chemical analyses of bottom sediments and fish tissue, toxicity testing of sediments, and a fish community assessment were also performed, but on a more limited scale.