An Integrated Stream Classification System for the State of TexasEric S. HershTerm Project, CE394K.2 May 1, 2007

NHDPlus Water QualityClimatologyHydrology & HydraulicsGeomorphology & Physical ProcessesBiologyEnvironmental Flows Information System: Data Model Thematic Layers

NRC Physical Settings for Instream FlowsNational Research Council Committee (2005). The Science of Instream Flows: A Review of the Texas Instream Flow Program. The National Academies Press, Washington, D.C.

NRC Qualitative Variables

CRWR Quantitative Variables

7.6 million values733,000 sampling events7,138 stations1,072 parameters1968 - 2006TCEQ Regulatory Activities and Compliance System:Surface Water Quality Monitoring

SWQM: Top 15 Parameters by ResultPrepared by Tyler Jantzen, CRWR

Charismatic Megafauna

USGS WaterWatch 22,380 gages Updated annually 30+ yrs of data

Testing of NRC regionalizationGeologic integrationAdditional correlation and redundancy testing (geostatistics?)PETFlowline versus subbasin representation

Future Work

Tyler Jantzen, Ernest To, Clark Siler, and David Maidment, CRWRAdam Czekanski, EWREWendy Gordon, TCEQ

Acknowledgements

Questions?

Kolbe, C.M. (2005). A Guide to Freshwater Ecology. Texas Commission on Environmental Quality, Austin, Texas.National Research Council Committee (2005). The Science of Instream Flows: A Review of the Texas Instream Flow Program. Committee on Review of Methods for Establishing Instream Flows for Texas Rivers, National Research Council. The National Academies Press, Washington, D.C. Saraeva, E. (2006). Development of an Instream Flow-Based Extrapolation Procedure for the Nooksack Watershed. Dissertation, Utah State University. Advisor: T.B. Hardy.References