Nelson, James E., Christopher M. Smemoe, and Bing Zhao. 1999b. A GIS Approach to Watershed Modeling in Maricopa County, Arizona, American Society of Civil Engineers, Water Resources Planning and Management Conference, June 6-10, 1999, Tempe, AZ. Published on CD ROM. http://emrl.byu/chris/documents/asceconf.pdf
Olivera, F. and D. R. Maidment. 1999. GIS-Based System of Hydrologic and Hydraulic Applications for Highway Engineering. Research Report 1738- 6. Center for Transportation Research,The University of Texas at Austin, Austin, Texas.
Stolpa, David. 2001-2002. Personal Interviews.
Tarboton, D. G. 1997. A New Method for the Determination of Flow Directions and Upslope Areas in Grid Digital Elevation Models. Water Resources Research, 33(2): 309-319.
Tarboton, D. G., R. L. Bras, and I. Rodriguez-Itube. 1991. On the Extraction of
Channel Networks from Digital Elevation Data. Research, 5(1): 81-100.
Texas Department of Transportation (TxDOT). 2001 Hydraulic Design Manual.
USACOE – HEC. 2000. HEC-HMS Hydrologic Modeling System: User’s Manual. Version 2.0. Hydrologic Engineering Center, Davis, California.
United States Geological Survey (USGS). Digital Raster Graphics (DRG). 1999. Internet Webpage: http://mcmcweb.er.usgs.gov/drg/
Watershed Modeling System (WMS) Reference Manual, Version 6.0. 1999. Environmental Modeling Research Lab., Brigham Young University.