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Austin Water Utility Water Resources Management Program

Summary of City of Austin Population and Water Demand Revision Requests for Region K Water Planning. Lower Colorado Regional Water Planning Group Meeting Burnet, Texas July 10, 2013. Austin Water Utility Water Resources Management Program. WILLIAMSON. Impact Fee Service Area Boundary.

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Austin Water Utility Water Resources Management Program

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  1. Summary of City of Austin Population and Water Demand Revision Requests for Region K Water Planning Lower Colorado Regional Water Planning Group Meeting Burnet, Texas July 10, 2013 Austin Water Utility Water Resources Management Program

  2. WILLIAMSON Impact Fee Service Area Boundary City Limits TRAVIS BASTROP HAYS

  3. City of Austin Water Demands for Regional Water Planning Process • City of Austin water demands are made up of multiple components: • Municipal Demands: • Within Austin and in Extra-Territorial Jurisdiction (ETJ) • Manufacturing Demands • Wholesale Customer Demands • Austin also has Steam-Electric water demands for power generation • previously addressed in the non-municipal water demand review process

  4. City of Austin Water Demands for Regional Water Planning Process • Municipal water demand projections: • Water User Group (WUG) Population multiplied by WUG Municipal Per Capita Demand • Projections represent conservative dry condition baseline water demand projections: • Incorporate plumbing code change-driven per capita water use reductions • At this stage of the planning process projections do not incorporate additional savings through implementation of water conservation and reuse water management strategies – this comes later in the planning process

  5. Overview of City of Austin Revision Request Items • Population: • Approve use of 1.0 Migration Scenario Projection for Travis County with extrapolation to 2070 • Apply Travis County population increases to: • main Austin WUG in Travis County • Travis “County Other” WUG • Other Travis County WUG population increase requests • Per Capita Demand: • For Austin WUGs (Travis, Williamson, and Hays County): • Approve use of base dry year per capita adjusted for Drought Contingency Plan (DCP) Implementation • Approve use of revised projected decadal per capita demands incorporating plumbing code and clothes washer savings already achieved by the City of Austin

  6. Travis County Population Projection Comparison • Revision Request: • Approve use of 1.0 Migration Scenario Projection for Travis County with extrapolation to 2070

  7. Austin WUG Base-Year Per Capita Water Demand • Revision Request: • Approve use of base year per capita water demand factor adjusted to not include Drought Contingency Plan (DCP) implementation effects • DCP implementation is a drought response measure that should not be imbedded in the baseline projection

  8. Austin WUG Per Capita Water Demand Projection For reference: GPCDs from 2011 plan: Base Year: 174 and 2060: 169 • Revision Request: • Approve use of revised projected decadal per capita demands incorporating plumbing code and clothes washer savings already achieved by the City of Austin

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