New Waves April 2010

Breaking news about water resources research and education in Texas

TWRI grant recipient analyzes model predictions of Texas river basins

Deepti Puri, a former doctoral student in the Department of Biological and Agricultural Engineering at Texas A&M University and Texas Water Resources Institute (TWRI) grant recipient, assessed the microorganism contamination in Guadalupe and San Antonio River Basins in Texas by applying the statistical model SPAtially Referenced Regression On Watershed Attributes (SPARROW). She then analyzed the effect of monitoring records on model prediction. Dr. R. Karthikeyan, assistant professor of biological and agricultural engineering, served as her advisor.

Her project was supported for the 2008-2009 academic year with a $5,000 TWRI grant provided by the U.S. Geological Survey (USGS) as part of the National Institutes for Water Research annual research program. TWRI is the designated institute for water resources research in Texas.

“The final selected model predicted the stream conditions with minimum uncertainty,” said Puri. “The selection of monitoring stations in SPARROW is very critical to include accurately the important factors affecting the regional water quality. The criterion used in this study ensured that the most appropriate set of monitoring stations were used to estimate the annual contaminant loading in streams.”

Puri now works for Alberta, Canada’s Department of Energy.

For more information on Puri’s project, see her final report. For more information on TWRI’s USGS Research Grant Program, visit

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