Overview
The primary goal of the Southwest Indiana Regional Water Study is to improve the understanding of estimated future groundwater and surface water demand and availability within the public water utility sector so that a gap analysis can be conducted. The questions the study is looking to answer include: How much water is currently available? Will there be enough water to meet the 50-year Public Water Supply needs?
The Study examined the 50-year demand and supply availability in southwestern Indiana watersheds, which are primarily located in Brown, Clay, Daviess, Dubois, Gibson, Greene, Hendricks, Jackson, Jefferson, Jennings, Knox, Lawrence, Martin, Monroe, Morgan, Orange, Owen, Pike. Posey, Putnam, Ripley, Scott, Sullivan, Vigo, and Washington counties. See the below map of the study area.
Water Demand and Availability in the Southwest Indiana Water Planning Region, August 2026 – Executive Summary
Water Demand and Availability in the Southwest Indiana Water Planning Region, August 2026 – Report
Water Demand and Availability in the Southwest Indiana Water Planning Region, August 2026 – Appendix A – Data Sources and Processing
Water Demand and Availability in the Southwest Indiana Water Planning Region, August 2026 – Appendix B – Utility Analyses
Water Demand and Availability in the Southwest Indiana Water Planning Region, August 2026 – Appendix C – Water Balance
Water Demand and Availability in the Southwest Indiana Water Planning Region, August 2026 – Appendix D – Water-Demand, Return-Flow, and Upstream Boundary-Condition Projection Methods
Water Demand and Availability in the Southwest Indiana Water Planning Region, August 2026 – Appendix E – Water Demand Results
Water Demand and Availability in the Southwest Indiana Water Planning Region, August 2026 – Appendix F – Southwest Indiana Subbasin Water Resources
Water Demand and Availability in the Southwest Indiana Water Planning Region, August 2026 – Appendix G – Water Availability Assessment Framework and Modeling Methods
Water Demand and Availability in the Southwest Indiana Water Planning Region, August 2026 – Appendix H – Water Availability Results
Presentation from kick-off call with stakeholders, September 23, 2025
Contacts
If you have questions or comments about the study, please send an email to WaterResources@ifa.in.gov
