1. In-Delta Storage Program

2. Outline
Background and history
Evolution of the fish screens
Proposed Re-engineered Delta Wetlands Project operations
Fish screen structure

3. Why are DWR and Reclamation Involved?
CALFED ROD
Reclamation and DWR ‘98-’99 evaluations concluded proposed locations meet CALFED’s environmental restoration and water supply reliability objectives
December 2001 DWR/Reclamation completed a joint planning study

4. DWR/Reclamation Involvement
Joint planning study concluded that for ownership by DWR/Reclamation, the Delta Wetlands Project requires modifications and additional analyses before it is appropriate to initiate negotiations with Delta Wetlands or other land owners.
Joint planning study work was reviewed by a CALFED Science Panel and the Independent Board of Consultants.
June 2003 complete Feasibility Study (state version).

5. Delta Wetlands Bacon and Webb (Storage) Holland and Bouldin (Habitat)

6. Delta Wetlands Proposed Project
Delta Wetlands Properties, Inc., a private company, made a proposal in July 1987 for storage on Webb Tract and Bacon Islands with habitat development on Holland and Bouldin Islands
The Final Operations Criteria were completed in January 1997
USFWS and NMFS biological opinions were issued in May 1997
EIR was completed in May 2000
DFG’s Incidental Take Permit was issued in June 2001
EIS was completed in July 2001

14. Permits Received Decision 1643 from the SWRCB
SWRCB CWA Section 401 Water Quality Certification
ACOE 404 Permit

15. Permit Fisheries Requirements
Final Operations Criteria
Diversion measures
Discharge measures
Other measures
Fish monitoring program
Exports limited to 250,000 AF per year

16. FOC Diversion Measures
Timing and duration of diversions are dictated by the position of X2.
No diversions can occur in April and May.
Diversions linked to the delta smelt Fall Midwater Trawl index.
Limited by percentage of available surplus water.
Can not exceed a set percentage of previous day’s net Delta outflow rate and a percentage of the San Joaquin River inflow rate.

17. FOC Diversion Measures - continued
Diversion rates are reduced by 50% if delta smelt are detected by in-channel monitoring from December – August.
Linked to operation of the DCC gates.
Maximum topping-off rates are set.

18. FOC Discharge Measures
No discharges for export or rediversion from Webb Tract can occur from January – June.
February – July discharges for export are limited by percentages of available unused capacity at CVP and SWP.
Provides for environmental water releases December – June.
Discharges for export are reduced by 50% if delta smelt are detected by daily in-channel monitoring April - August.

19. Other Measures
Fish screen final design and installation guidelines are subject to the approval of the regulatory agencies.
200 acres of shallow water habitat protected by conservation easement
Boat wake erosion fee
Mitigation ratio of 3:1 for aquatic habitat impacts from siphon and pumping stations and boat docks
Temperature and DO limits for discharges
Incidental entrainment compensation

20. Re-engineered Delta Wetlands Project Bacon and Webb (Storage) Holland and Bouldin (Habitat)