Relating to the development of certain regional water plans using safe yield water availability analyses.

HB 3106 requires regional water planning groups in Texas to use "safe yield" analysis when developing water plans for areas relying on reservoirs. This analysis calculates the long-term, reliable water supply a reservoir can provide even during severe droughts, rather than relying on peak flood-year volumes. If a group decides not to use this method, they must include a written explanation in their plan. The law applies to regions dependent on surface water from reservoirs and takes effect September 1, 2025.