Attoyac at US 59 - TCEQ ID: 16076

Site Description

Attoyac Bayou at US 59; 4.12 km Northeast of Garrison.

Segment Description

Segment 0612 - Attoyac Bayou. Attoyac Bayou is a freshwater stream measuring 81.7 miles in length from a point 3.9 km (2.4 miles) downstream of Curry Creek in Nacogdoches/San Augustine County to FM 95 in Rusk County. The designated uses for this segment include the following: high aquatic life, general, contact recreation, and public water supply. The area surrounding the watershed is managed for agricultural (cattle and poultry), silvicultural, recreational, and wildlife uses. The watershed contains many rural residents. This segment has three areas that are listed on the 303(d) list due to bacteria.

Monitoring Performed Quarterly

Field Parameters Conventional Parameters Bacterial Parameters
Dissolved Oxygen Ammonia-N E. coli
Days Since Last Significant Rainfall Chloride  
Flow Severity Chlorophyll-a  
Instantaneous Stream Flow Pheophytin-a  
pH Sulfate  
Present Weather Total Dissolved Solids (TDS)  
Secchi Transparency Total Nitrate+Nitrite  
Specific Conductance Total Phosphorus  
Total Water Depth Total Suspended Solids (TSS)  
Water Temperature    



  • Downstream November

    Facing southeast, looking downstream from field adjacent to highway. Photo taken 2010-11-08

  • Downstream May

    Facing southeast, looking downstream from below bridge. Photo taken 2011-05-17

  • Upstream November

    Facing northwest, looking upstream from field adjacent to highway. Photo taken 2010-11-08

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