Ayish Bayou at West Columbia Street - TCEQ ID: 21431

Site Description

Ayish Bayou at West Columbia Street

Segment Description

Segment 0610A - Ayish Bayou (unclassified water body). Ayish Bayou is a 32 mile-length freshwater stream extending from the confluence of Sam Rayburn Reservoir south of San Augustine in San Augustine County to the upstream perennial portion of the stream north of San Augustine in San Augustine County. This stream segment, including the upper, middle, and lower portions, is listed on the 303 (d) list for bacteria. Currently, it is classified under a 5a category. The first year this water body was listed for impairments was 2000.

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    


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