Population projections in the technical update are one of the major drivers of future water use. The scenario planning analysis update utilizes State Demography Office projections from 2017 (for comparison 2018 projections can be found here). The updated, detailed Technical Memorandum can be found here. Images below include both the methodology fact sheet and analysis insights.
MUNICIPAL & SELF-SUPPLIED INDUSTRIAL
Municipal demands for the Technical Update is calculated using methodologies similar to SWSI 2010, but utilize planning scenarios and enhanced input data. Enhanced inputs include data from HB10-1051 water use and conservation data reporting,
Water Efficiency Plans, and Basin Implementation Plans. The basic equation for estimating municipal demand considers population and per-capita water use (described as gallons per capita per day or gpcd). The detailed Technical Memoandum can be found here. Images below include both the methodology fact sheet.