La Nana Bayou at East Main - TCEQ ID: 20792

Site Description

La Nana Bayou. Immediately Upstream Of East Main St/State Highway 7/State Highway 21 In Nacogdoches.

Segment Description

Segment 0611B - La Nana Bayou (unclassified water body). This 32 mile freshwater stream extends from the confluence of the Angelina River south of Nacogdoches in Nacogdoches County to the upstream perennial portion of the stream north of Nacogdoches in Nacogdoches County. There are a couple of areas within the segment impaired for nonsupport of contact recreational use. These areas were first listed on the 303 (d) list in the year 2000 due to bacteria and are currently classified under category 5a. The areas included are from the mouth to SH 7.

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    



  • Upstream November

    Facing north-northeast, looking upstream. Photo taken 2010-11-08

  • Upstream May

    Facing north-northeast, looking upstream. Photo taken 2011-05-17

  • Downstream November

    Facing south-southwest, looking downstream towards bridge. Photo taken 2010-11-08

  • Downstream May

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

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