Model Overview Application of CALSIM II to Friant System

CALSIM Development for USJRBI, Phase I Incorporate Real-time Operational Decision Logic for Operation of Millerton Lake  Water supply allocation based on available water supply –Class 1, Class 2, and 215 water allocation made in March and updated monthly through end of June –Monthly use of Class 1 and Class 2 are dynamic based on availability of Class 2 and 215 water  Flood operation based on seasonal runoff –Water supply forecast used in February and updated monthly through end of June to target filling Millerton by end of June –Pre-release for snowmelt runoff are made each month from February through May

Monthly Delivery Adjustment Forecasted Snowmelt Release Monthly Delivery Pattern Annual Class 2 Allocation Annual Class 1 Allocation Annual Water Supply Forecast Water Supply Allocation Procedure Initial Monthly Delivery Rain Flood Release 215 Water Allocation Annual Delivery Monthly Delivery

Model Validation Model Validation  Compare Model Simulation to Historical Operation  Findings: – Model adequately mimics historical operation – Model simulation provides “benchmark” for comparative analysis

Model Validation Plots Annual Total Canal Delivery Annual Madera Canal Delivery Annual Friant-Kern Canal Delivery Monthly Millerton Operation Monthly Canal Diversions Monthly Millerton Operation Monthly Canal Diversions Monthly Millerton Operation Monthly Canal Diversions Monthly Millerton Operation Monthly Canal Diversions Monthly Millerton Operation Monthly Canal Diversions

Conclusion  Model adequately mimics historical operation  Model simulation provides “benchmark” for comparative analysis

End

Annual Total Canal Delivery Most differences are explainable

Annual Madera Canal Delivery

Annual Friant-Kern Canal Delivery

Rerouted Flood Flow to Madera Canal – Fresno River

Monthly Millerton Operation

Monthly Canal Diversions

Monthly Millerton Operation

Monthly Canal Diversions

Monthly Millerton Operation

Monthly Canal Diversions

Monthly Millerton Operation

Monthly Canal Diversions

Monthly Millerton Operation

Monthly Canal Diversions

Annual Water Supply Forecast  Water Supply Volume Available for Delivery = + Beginning of Month Storage + Inflow (through September) - Canal Loss (through September) - Minimum River Release (through September) - Evaporation Estimate (through September) - Carryover Target (end of September)  Updated Monthly From March Through June

Annual Class 1 Allocation Minimum of Water Supply Volume Available for Delivery Water Supply Volume Available for Delivery 800,000 AF 800,000 AF  Updated Monthly From March Through June

Annual Class 2 Allocation Minimum of Water Supply Volume Available for Delivery Water Supply Volume Available for DeliveryMinus Class 1 Allocation Class 1 Allocation Spill forecast Spill forecast 1,400,000 AF 1,400,000 AF  Updated Monthly From March Through June for Spills  Adjusted for Wetness in Tulare Basin

Monthly Delivery Pattern  Patterns are developed based on deliveries from  4 Sets of Monthly Patterns 1.Total Friant-Kern Canal 2.Friant-Kern Canal Class 1 3.Total Madera Canal 4.Madera Canal Class 1  CALSIM uses annual delivery allocation to select pattern  Class 2 Pattern is the Difference Between Total and Class 1

Historical Total Delivery Pattern

Historical Class 1 Delivery Pattern

Total Delivery Patterns

Class 1 Delivery Patterns

Snowmelt Release Forecast  Volume of Friant release, above Class 1 and Class 2, to be made with the target of filling by the end of June  Spill volume is spread throughout spring, the pattern of release is based on spill volume  Updated Monthly From February Through June  Snowmelt Release Volume = + March 1 Storage + Inflow (through June) - Canal Loss (through June) - Minimum River Release (through June) - Evaporation Estimate (through June) - Maximum Millerton capacity -Canal Delivery

Delivery Adjustment  Friant-Kern Canal Class 2 delivery is reduced based on Tulare Basin wetness – Natural Flow of Tule River is used as wetness indicator  Madera Canal delivery is reduced based on Madera Canal service area demands

215 Water Allocation  Allocation is made only when Friant will spill for Rain flood or pre-release for snowmelt  215 water will not be allocated when delivery is reduced due to basin wetness  215 demand is 1,200 cfs for Friant-Kern Canal  215 demand is 100 cfs for Madera Canal