• National Association of State Conservation Agencies (NASCA)
• National Association of Conservation Districts (NACD)

• State of Texas Website
• Texas Agricultural Experiment Station
• Texas Agricultural Statistics Service
• Texas AgriLife Extension Service
• Texas Department of Agriculture
• Texas Forest Service
• Texas Commission on Environmental Quality
• Texas Parks and Wildlife Department
• Texas Water Development Board
• Texas Groundwater Protection Committee 

• Brazos River Authority
• Canadian River Authority
• Lower Colorado River Authority
• Nueces River Authority
• Red River Authority
• Sabine River Authority
• Trinity River Authority
• Upper Colorado River Authority
• Upper Guadalupe River Authority

• Natural Resources Conservation Service
  • NRCS - Texas Office
  • Field Office Technical Guide
• United States Geological Survey
• United State Army Corps of Engineers
• Agricultural Research Service
• United States Environmental Protection Agency
  • USEPA Surf Your Watershed
  • USEPA Watershed Academy
  • USEPA Office of Ground Water/ Drinking Water
  • USEPA Nonpoint Source Control
  • USEPA Clean Water Action Plan
• USEPA - Region 6 Headquarters

• Texas Water Resources Institute
• Blackland Research and Extension Center
• Texas Institute for Applied Environmental Research

• Association of Metropolitan Water Agencies
• National Agricultural Statistics Service
• Water IQ

Texas Comptroller of Public Accounts

• Online State Expenditure Database