Theses and Dissertations

Date of Award


Document Type


Degree Name

Master of Science (MS)


Civil Engineering

First Advisor

Dr. Abdoul Oubeidillah

Second Advisor

Dr. Andrew Ernest

Third Advisor

Dr. Chu-Lin Cheng


The Brownsville Ship Channel (BSC) was listed as an impaired waterway from 2010 to 2018 due to screening levels of bacteria concentration. This study aims to address water quality at the three main tributary ditches draining into Brownsville Ship Channel to model present along with future pollutant loads within Brownsville Ship Channel Watershed. Load Duration Curves (LDCs) and Spatial Explicit Load Enrichment Calculation Tool (SELECT) models were developed to determine if current pollutant loads meet water quality standards stablished by the Texas Commission on Environmental Quality (TCEQ), and to estimate average daily potential E. Coli loading contribution from sub-watersheds within BSCW. Findings from this study indicate that E. Coli, Total Kjeldahl Nitrogen, Nitrate/Nitrite Nitrogen and Total Phosphorus daily loadings had been exceeding the maximum allowable loading criteria in most of the observations.


Copyright 2022 Ivan Rene Santos Chavez. All Rights Reserved.