In-Delta Storage Program

• Background and historyBackground and history

• Evolution of the fish screensEvolution of the fish screens

• Proposed Re-engineered Delta Proposed Re-engineered Delta Wetlands Project operationsWetlands Project operations

• Fish screen structureFish screen structure

OutlineOutline

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

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).

Delta WetlandsBacon and Webb (Storage)

Holland and Bouldin (Habitat)

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

• Decision 1643 from the SWRCBDecision 1643 from the SWRCB

• SWRCB CWA Section 401 Water Quality SWRCB CWA Section 401 Water Quality CertificationCertification

• ACOE 404 PermitACOE 404 Permit

Permits ReceivedPermits Received

Permit Fisheries Requirements

• Final Operations Criteria– Diversion measures– Discharge measures– Other measures– Fish monitoring program– Exports limited to 250,000 AF per year

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.

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.

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.

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

Re-engineered Delta Wetlands ProjectBacon and Webb (Storage)

Holland and Bouldin (Habitat)