Golden State Title (12364 bytes) State of California Home Page Link (6792 bytes) Governor's Office Home Page Link  (6878 bytes)
Modeling Support Branch, Available Studies
CALSIM Studies for South Delta Improvements Program

 

Common Assumptions for All Studies:
 1995D06H-SDIP-963, 1995D06H-SDIP-965, 1995D06H-SDIP-970,
 2020D09E-SDIP-964,  2020D09E-SDIP-968,  2020D09E-SDIP-969

 

  • Meet 1995 WQCP Bay-Delta Accord Standards.
  • Vernalis minimum flows from Feb. – June and Oct. are not modeled.
  • Meet upstream AFRP flows (November 20, 1997 AFRP Document) below Keswick, Whiskeytown and Nimbus Dams.
  • Meet Vernalis Adaptive Management Plan (VAMP) flows during April 15 – May 15 at Vernalis.
  • CVP export during April 15 – May 15 is restricted to the 2:1 export criteria (1995 Delta Smelt Biological Opinion) and is computed as 50% of the result of the maximum of VAMP flow – ½ Biological Opinion target flow or 1,500 cfs.
  • SWP export during April 15 – May 15 is restricted to the 1:1 export criteria and is computed as 50% of the result of the maximum of 100% of Vernalis base flow or 1500 cfs.
  • Meet 1993 Winter-run Biological Opinion (NMFS) temperature control flows below Keswick in April through September. These flows are assumed to be in the range of 5,500 cfs to 11,000 cfs for most years and reduced to 3,750 cfs to 7,125 cfs in drier years.
  • Full and unlimited joint point of diversion (SWP wheels for the CVP whenever unused capacity at Banks P.P. is available).
  • Stanislaus River operations are in accordance with the USBR’s New Melones Interim Operation Plan.
  • Meet Trinity River minimum flows of 340 taf/yr.
  • Hydrology and Demands

 

Common Assumptions for All Existing Conditions Studies:
  1995D06H-SDIP-963, 1995D06H-SDIP-965, 1995D06H-SDIP-970
 
  • 1995 Level of Hydrology (1995D06H) and upstream depletions are based on DWR Bulletin 160-98 land use projections (73-years: 1922-1994).
  • 75% deficiency is applied to CVP project users in the Sacramento River basin in 1924, 1929-1934, 1976-1977, 1987-1992, and 1994 in order to have sufficient water in Shasta to meet temperature control flows below Keswick.
  • South of Delta SWP Demand varies from 2.78 maf to 3.67 maf/yr. based on current year 2000 demands and adjusted to local wetness index in Southern California.
  • Maximum SWP Interruptible Demand is 84 taf/month.
  • South of Delta CVP demand including Level II Refuge demand of 288 taf/year is 3.43 maf/year.

 

Common Assumptions for All Future Conditions Studies:
 2020D09E-SDIP-964,  2020D09E-SDIP-968,  2020D09E-SDIP-969
 
  • 2020 Level of Hydrology (2020D09E) and upstream depletions are based on DWR Bulletin 160-98 land use projections (73-years: 1922-1994).
  • 75% deficiency is applied to CVP project users in the Sacramento River basin in 1924, 1929-1934, 1976-1977, 1987-1992, and 1994 in order to have sufficient water in Shasta to meet temperature control flows below Keswick.
  • South of Delta SWP Demand varies from 3.51 maf to 4.19 maf/yr. based on local wetness index in Southern California.
  • Maximum SWP Interruptible Demand is 134 taf/month.
  • South of Delta CVP demand including Level II Refuge demand of 288 taf/year is 3.62 maf/year.

 

Specific Assumptions for Individual Studies

     
The six studies are described below. All studies have the same common assumptions as described above, except Banks pumping capacity.

1.   Unmodified Existing Conditions (1995D06H-SDIP-963)
Banks pumping capacity is 6,680 cfs and can be increased up to 8,500 cfs from December 15 to March 15 per the USACE October 31, 1981 Public Notice Criteria.

2.   Phase 1 - Modified Existing Conditions (1995D06H-SDIP-965)
Banks pumping capacity is 8,500 cfs year round.

3.   DFG - Modified Existing Conditions (1995D06H-SDIP-970)
Banks pumping capacity is 6,680 cfs from April 1 through June 30 and is increased to 8,500 cfs from July 1 through March 31. During December 15 – March 15, Banks pumping capacity can be increased up to 10,300 cfs (6,680 + 1/3 of Vernalis flows) whenever the Vernalis flows exceed 1,000 cfs.

4.   Unmodified Future Conditions (2020D09E-SDIP-964)
Banks pumping capacity is 6,680 cfs and can be increased up to 8,500 cfs from December 15 to March 15 per the USACE October 31, 1981 Public Notice Criteria.

5.   Phase 5 - Modified Future Conditions (2020D09E-SDIP-968)
Banks pumping capacity is 10,300 cfs year round.

6.   DFG - Modified Future Conditions (2020D09E-SDIP-969)
Banks pumping capacity is 6,680 cfs from April 1 through June 30 and is increased to 10,300 cfs from July 1 through March 31.

 

Back | Home Available Studies Computer Models Reports

Section Home Pages

Site Map
Hydrology &
Operations
Delta Modeling Computer Assistance

Disclaimer
Comments or Suggestions?
Webmaster email htdelmod@water.ca.gov

URL http://modeling.water.ca.gov/hydro/studies/calfed/index.html
Last modified: April 19, 2001.

Copyright © 2000.
California Department of Water Resources.
All rights reserved.