Projections Methodology Population, Municipal, and Non-Municipal Water Demand Methodologies and Documentation

2026 Regional Water Plans & 2027 State Water Plan

Non-Municipal Water Demand Projections Data Visualization Tools
Municipal Water Demand Projections Data Visualization Tool
Irrigation Water Demands Projection Methodology - Methodology used to develop the draft irrigation water demand projections in the 2026 RWPs (August 2022)
Livestock Water Demands Projection Methodology - Methodology used to develop the draft livestock water demand projections in the 2026 RWPs (January 2022)
Manufacturing Water Demands Projection Methodology - Methodology used to develop the draft manufacturing water demand projections in the 2026 RWPs (January 2022)
2022 Mining Water Use Study - Includes Report, Tables, and Data Visualization Tool
Population and Municipal Water Demands Projection Methodology - Methodology used to develop the draft population projections, baseline gallons per capita per day, plumbing code savings projections, and municipal water demand projections in the 2026 RWPs (May 2023)
Summary of the Population Revision Request Process for Regional Water Planning - Population Revision Process Summary
2026 RWP Municipal Water User Group Boundaries Shapefile
Steam-Electric Power Water Demands Projection Methodology - Methodology used to develop the draft steam-electric power water demand projections in the 2026 RWPs (January 2022)

Population, Municipal Demand, and Non-Municipal Demand FAQ - Answers to Frequently Asked Questions (07/16/2018)
Population and Municipal Demand Projection Methodology - Methodology used to develop the draft population and municipal water demand projections (Spring 2017)
Brief Summarized Methodologies for Non-Municipal Water Demand Projections - Brief description of the methodology for non-municipal demand projections for the 2021 Regional Water Plans and 2022 State Water Plan (September 2018)
Methodologies for Developing Draft Irrigation, Manufacturing, and Steam Electric Power Water Demand Projections - Methodologies used to develop the draft irrigation, manufacturing, and steam electric power water demand projections (February 2017)
Summary of 2021 Regional Water Plan Draft Non-Municipal Water Demand Projection Methodology - Methodology summaries for irrigation, manufacturing, steam-electric power, livestock, and mining (06/02/2017)
Comparison Tool of State Water Plans Water Demand Data - Interactive chart tool to visualize the 2022 State Water Plan Board-adopted water demand projections compared to previous plans by region, county, and water use category (01/30/2020)
Board memo - Adopting population projections for use in the 2021 Regional Water Plans and 2022 State Water Plan (04/05/2018)
Board memo - Adopting water demand projections for use in the 2021 Regional Water Plans and 2022 State Water Plan (04/05/2018)

Statewide ESRI ArcMap shapefile of Water Utility Groups (WUGs) - Download Zip file (06/03/2019)
SWP 2022 Water User Group Information - Table bridging the 2017 State Water Plan WUGs to the 2022 State Water Plan WUGs (09/21/2017)
Historical Population & GPCD for WUGs - Historical population, water use estimates, and per person water use estimates, (2010-2015) for municipal utilities (6/30/2017)
Historical Population & GPCD for County-Other Rural Areas - Historical population, water use estimates, and per person water use estimates (2010-2015) for county-other rural areas (07/31/2017)
Water Efficiency Savings - Projected water efficiency savings in GPCD from 2020-2070 used in the water demand projections calculations (07/31/2017)
2010-2015 Population Estimate Comparison - Comparison of U.S. Census county population estimates to the 2017 State Water Plan population projections (12/22/2016)
Comparison of U.S. Census City Estimates to 2017 State Water Plan Projections - Tool to compare 2010-2015 city population estimates (04/05/2017)

Irrigation Supporting Data - 2010-2015 historical water use estimates and groundwater availability information (06/02/2017)
Manufacturing Supporting Data - 2010-2015 historical water use estimates, Texas Workforce Commission employment projections and multipliers, and NAICS code descriptions (06/02/2017)
Additional Manufacturing Data - Supplemental manufacturing water use estimates (07/31/2017)
Mining Supporting Data - 2010-2015 historical water use estimates (06/02/2017)
Steam-Electric Power Supporting Data - 2010-2015 historical water use estimates and power plants included in the projections (06/02/2017)
Summary: Non-Surveyed Oil and Gas Water Use Estimates, Including Fracking - Summary of the methodology used to estimate non-surveyed mining water use annually (Jan 2021)
Summary: Non-Surveyed Annual Livestock Inventory and Water Use Estimates - Summary of the methodology used to estimate non-surveyed livestock inventory and water use by species (June 2021)

Population & Water Demand Educational Presentation (Spring 2013)
WUG Entity 2011 GPCD Detail Report Generation List - A web-accessible report illustrating the intake and sales volumes used to develop the base gallons per capita daily (GPCD); the results for each Entity can be downloaded as a pdf or MS Excel file.
Draft Population & Municipal Water Demand Projections Methodology (03/05/2013)

Updated Mining Demand Projections Spreadsheet extracted from the "Oil & Gas Water Use in Texas: Update to the 2011 Mining Water Use Report"; see report link bullet below (01/28/2013)
Executive Summary - Oil and Gas Water Use in Texas: Update to the 2011 Mining Water Use Report - This is the 2012 update to the 2011TWDB-contracted report to identify current water uses and develop future demand projections for mining/oil/gas entities (the full 2012 update report). (09/01/2012)
Final Report: Water Demand Projections for Power Generation in Texas (September, 2008)

If you have any questions or comments about the information provided in these pages please contact Projections and Socioeconomic Analysis Department