Model Overview

1
Model Overview

• Application of CALSIM II to Friant System

2
CALSIM Development for USJRBI, Phase
IIncorporate 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

3
Water Supply Allocation Procedure
Annual Class 1 Allocation
Annual Water Supply Forecast
Annual Class 2 Allocation
Annual Delivery
Monthly Delivery Pattern
Initial Monthly Delivery
Forecasted Snowmelt Release
Monthly Delivery Adjustment
Monthly Delivery
215 Water Allocation
Rain Flood Release
4
Model Validation

• Compare Model Simulation to Historical Operation
• Findings
• Model adequately mimics historical operation
• Model simulation provides benchmark for
  comparative analysis

5
Model Validation Plots

• Annual Total Canal Delivery
• Annual Madera Canal Delivery
• Annual Friant-Kern Canal Delivery
• 1952-1961 Monthly Millerton Operation
• 1952-1961 Monthly Canal Diversions
• 1962-1971 Monthly Millerton Operation
• 1962-1971 Monthly Canal Diversions
• 1972-1981 Monthly Millerton Operation
• 1972-1981 Monthly Canal Diversions
• 1982-1991 Monthly Millerton Operation
• 1982-1991 Monthly Canal Diversions
• 1992-1994 Monthly Millerton Operation
• 1992-1994 Monthly Canal Diversions

6
Conclusion

• Model adequately mimics historical operation
• Model simulation provides benchmark for
  comparative analysis

7
End
8
Annual Total Canal Delivery
Most differences are explainable
9
Annual Madera Canal Delivery
10
Annual Friant-Kern Canal Delivery
11
Rerouted Flood Flow to Madera Canal Fresno River
12
1952-1961 Monthly Millerton Operation
13
1952-1961 Monthly Canal Diversions
14
1962-1971 Monthly Millerton Operation
15
1962-1971 Monthly Canal Diversions
16
1972-1981 Monthly Millerton Operation
17
1972-1981 Monthly Canal Diversions
18
1982-1991 Monthly Millerton Operation
19
1982-1991 Monthly Canal Diversions
20
1992-1994 Monthly Millerton Operation
21
1992-1994 Monthly Canal Diversions
22
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

23
Annual Class 1 Allocation

• Minimum of
• Water Supply Volume Available for Delivery
• 800,000 AF
• Updated Monthly From March Through June

24
Annual Class 2 Allocation

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

25
Monthly Delivery Pattern

• Patterns are developed based on deliveries from
  1982-1997
• 4 Sets of Monthly Patterns
• Total Friant-Kern Canal
• Friant-Kern Canal Class 1
• Total Madera Canal
• Madera Canal Class 1
• CALSIM uses annual delivery allocation to select
  pattern
• Class 2 Pattern is the Difference Between Total
  and Class 1

26
Historical Total Delivery Pattern
27
Historical Class 1 Delivery Pattern
28
Total Delivery Patterns
29
Class 1 Delivery Patterns
30
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

31
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

32
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