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2. 2 Required under water right Establishes limit on LCRA firm water contract sales from lakes Industry standard for evaluating available water supply

3. 3 The maximum amount of water that can be withdrawn year in and year out from storage of Lakes Buchanan and Travis without experiencing shortages during the critical drought of record. Normally calculated using a reservoir system operations model using a long- term historical hydrologic record.

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5. 5 Authorized storage capacity for Lakes Buchanan and Travis “No-Call” in effect for LCRA with respect to water rights upstream of Lakes Ivie and Brownwood Full authorized demands for all water rights in Colorado Basin

6. 6 Austin return flows discharged into Colorado River based on historical experience No interruptible water from Highland Lakes provided for downstream users No firm or interruptible water from Highland Lakes provided for environmental flows

7. 7 Modify TCEQ Colorado Basin water availability model (WAM) to reflect firm annual yield assumptions Operate WAM and change demand on Highland Lakes until near zero storage achieved during critical drought period Extract firm annual yield components

8. 8 Municipal & Industrial Users Demand370,241 Backup for Austin M&I Water Rights58,708 Backup for South Texas Project26,347 _______ Combined Firm Yield455,296 Acre-Feet Per Year

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