Matagorda Bay and Nearby Coastal Waters Dissolved Oxygen and pH TMDL Assessment Report
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Date
2006-04-21
Authors
Montagna, Paul A.
Applebaum, Sally
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Description
This project provides technical support to the Texas Commission on Environmental Quality (TCEQ)
for the development of a Total Maximum Daily Load (TMDL). The TCEQ will lead an effort to
assess the causes and sources of the following water quality problems identified in the 2002 Texas
Water Quality Inventory and 303(d) List for Matagorda Bay/Powderhorn Lake (Segment 2451),
which only partially supports the aquatic life use due to exceedence of the dissolved oxygen (DO)
standard on the east half of the main bay; Tres Palacios/Turtle Bay (Segment 2452),which only
partially supports the aquatic life use due to exceedance of the dissolved oxygen standard in the
Palacios area assessment unit and Carancahua Bay (Segment 2456); which only partially supports
the general use due to high pH in 9.2 square miles at the north end of the bay; and Carancahua Creek
and Conn Brown Harbor (Segment 2483A), which does not support the aquatic life use in the entire
harbor due to depressed dissolved oxygen. The goals of the current project were to develop a Quality Assurance Project Plan, to develop and implement a monitoring program to assess the DO conditions in Matagorda Bay, Tres Palacios Bay, and Conn Brown Harbor and the pH conditions in Carancahua Bay, and to assess the data collected from the monitoring plan and determine the cause of impairments that result in exceedence of the water quality criteria.
Project Title: Total Maximum Daily Load (TMDL) Assessment
Final Report Submitted To: Texas Commission On Environmental Quality
Project Title: Total Maximum Daily Load (TMDL) Assessment
Final Report Submitted To: Texas Commission On Environmental Quality
LCSH Subject Headings
Water--Dissolved oxygen--Texas--Matagorda Bay, Water--Dissolved oxygen--Texas--Tres Palacios Bay, Water--Dissolved oxygen--Texas--Conn Brown Harbor, Water--Pollution--Total maximum daily load--Texas--Matagorda Bay, Water--Pollution--Total maximum daily load--Texas--Tres Palacios Bay, Water--Pollution--Total maximum daily load--Texas--Conn Brown Harbor, Water--Pollution--Total maximum daily load--Texas--Carancahua Bay, Hydrogen-ion concentration--Measurement, Water--Dissolved oxygen--Texas--Carancahua Bay