TY - CHAP
T1 - Chapter 27 Spatial and Temporal Trends in Surface Water Quality in a Segment of the San Antonio River, Texas
AU - Anderson, Andrea
AU - Nagar, Rachana
AU - Sarkar, Dibyendu
PY - 2007
Y1 - 2007
N2 - Water quality as a function of land use was examined in the upper San Antonio River in the city of San Antonio, Texas. Five water sampling sites representative of different point and nonpoint pollution sources were spread over a distance of 3.2 km. Surface grab sampling was performed on a monthly basis between November 2004 and April 2005 excluding December. Water quality parameters that were evaluated include pH, dissolved oxygen, temperature, total dissolved solids (TDS), total nitrate-nitrogen, total orthophosphate, turbidity, alkalinity and hardness using standard analytical protocols. Results were statistically analyzed by MANOVA. Findings were compared to state (Texas Environmental Quality Commission) and/or federal (U.S. Environmental Protection Agency) limits to establish whether or not parameters were in compliance with those standards or guidelines. Of the routine water quality parameters examined, only turbidity and nitrate-nitrogen exceeded specific standards or guidelines in the segment of the San Antonio River that was sampled. Turbidity and nitrate-nitrogen also showed spatial and temporal trends, which were possibly, affected by land use and local precipitation patterns. Overall, this segment of the upper San Antonio River was considered to be relatively unpolluted and in most parts, unaffected by the land use.
AB - Water quality as a function of land use was examined in the upper San Antonio River in the city of San Antonio, Texas. Five water sampling sites representative of different point and nonpoint pollution sources were spread over a distance of 3.2 km. Surface grab sampling was performed on a monthly basis between November 2004 and April 2005 excluding December. Water quality parameters that were evaluated include pH, dissolved oxygen, temperature, total dissolved solids (TDS), total nitrate-nitrogen, total orthophosphate, turbidity, alkalinity and hardness using standard analytical protocols. Results were statistically analyzed by MANOVA. Findings were compared to state (Texas Environmental Quality Commission) and/or federal (U.S. Environmental Protection Agency) limits to establish whether or not parameters were in compliance with those standards or guidelines. Of the routine water quality parameters examined, only turbidity and nitrate-nitrogen exceeded specific standards or guidelines in the segment of the San Antonio River that was sampled. Turbidity and nitrate-nitrogen also showed spatial and temporal trends, which were possibly, affected by land use and local precipitation patterns. Overall, this segment of the upper San Antonio River was considered to be relatively unpolluted and in most parts, unaffected by the land use.
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U2 - 10.1016/S1474-8177(07)05027-9
DO - 10.1016/S1474-8177(07)05027-9
M3 - Chapter
AN - SCOPUS:44349140634
SN - 9780080465227
T3 - Developments in Environmental Science
SP - 591
EP - 608
BT - Concepts and Applications in Environmental Geochemistry
A2 - Sarkar, Dibyendu
A2 - Datta, Rupali
A2 - Hannigan, Robyn
ER -