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Dickinson Bayou: Investigating Low Dissolved Oxygen Conditions

A completed project to assess conditions for support of fish and other aquatic life

photo of Dickinson Bayou
Dickinson Bayou

County: Galveston
Parameter: Low dissolved oxygen
Basin: San Jacinto–Brazos Coastal
Segment: 1103

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In Dickinson Bayou Tidal (Segment 1103), concentrations of dissolved oxygen were less than optimum compared to standards defined for the support of aquatic life.

Oxygen, which dissolves in water, is essential for the survival of aquatic life. The amount of dissolved oxygen in water fluctuates naturally, and low dissolved oxygen is a common natural occurrence in some coastal waters like Dickinson Bayou. Various human activities can also cause unusually or chronically low dissolved-oxygen levels, which may harm fish and other aquatic organisms.

This project evaluated the effects of low dissolved oxygen on aquatic life in the tidal portion of Dickinson Bayou. Based on comments received from stakeholders, TMDLs were not adopted.

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Public Participation

Stakeholders in the watershed formed the Dickinson Bayou Watershed PartnershipExit the TCEQ to implement activities that improve water quality in Dickinson Bayou. Information about the Partnership’s activitiesExit the TCEQ is available on their website.

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For More Information

Please e-mail us at, and mention the Dickinson Bayou TMDL in the subject line. Or call us at 512-239-66682.

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communities working together taking care of our rivers, lakes, and bays