San Joaquin River At Crows Landing 30 June 2010
CV-SALTS Lower San Joaquin River Committee History and Background Discussion 30 June 2010
30 June 2010
30 June 2010
Lower San Joaquin River Basin Stanislaus River Tuolumne River Merced River Stockton Modesto Vernalis Mendota Dam Delta Mendota Canal Crows Landing Friant Dam 30 June 2010 4
30 June 2010
Average Electrical Conductivity SJR Near Vernalis 30 June 2010
Average Electrical Conductivity SJR Near Vernalis 30 June 2010
15-year Running Average Electrical Conductivity SJR Near Vernalis Friant completed, SJR diverted south Delta water delivered to west side SJV 30 June 2010
SWRCB Revised Water Right Decision 1641 March 15, 2000 “The Central Valley RWQCB is hereby directed promptly to develop and adopt salinity objectives and a program of implementation for the main stem of the San Joaquin River upstream of Vernalis. As part of its implementation plan for the salinity objectives, the Central Valley RWQCB should evaluate a program to regulate the timing of agricultural discharges to the San Joaquin River.” 30 June 2010
Flow and Salinity, July 1999 Lander Avenue 60 miles Vernalis 30 June 2010
San Joaquin River Electrical Conductivity Vernalis Maze Patterson/Crows Landing Hills Ferry Lander 30 June 2010 4
Salt Load at Vernalis by type 30 June 2010
30 June 2010
30 June 2010
San Joaquin River At Airport Way (Vernalis) 30 June 2010
San Joaquin River at Crows Landing (Just below the Merced River confluence) 30 June 2010
Previous Studies 30 June 2010
30 June 2010
Studies Interagency Drainage Program USBR San Luis Unit Drainage Feature Reevaluation Hilmar Cheese SEP Report USGS Studies Larry Walker Modesto area pilot study See reference lists for more 30 June 2010
KEY REPORT 30 June 2010
Ongoing Activities South Delta Salinity Objectives San Joaquin River Flow Objectives San Joaquin River Restoration Project Surface water monitoring program USBR West Side salt and water budget –contract project USBR Program to Meet Standards USBR Recirculation Project Grassland Bypass Project Irrigated Lands Regulatory program Long Term Program development 30 June 2010
SJR TMDL Unit Presentation 30 June 2010
Needs Identified Crop salt tolerance review Achievability analysis Cost analysis Environmental review NOTE: No evaluation of Beneficial Uses was planned 30 June 2010
San Joaquin River 2004 Salt and Boron TMDL Addresses both point and nonpoint source discharges Basin broken into subareas and priorities established Includes compliance timetable 8 to 20 years to come into compliance 30 June 2010
Lower San Joaquin River Subareas 30 June 2010
Salt Load at Vernalis by Subarea 30 June 2010
2004 Salt and Boron TMDL Point Source Dischargers Salinity levels must be below water quality objectives 30 June 2010
2004 Salt and Boron TMDL Nonpoint Source Dischargers Real-time encouraged – can operate under waiver Fixed base loads & WDRs for others Loads allocated by acreage Supply water credits and other factors 30 June 2010
2004 Salt and Boron TMDL Nonpoint Source Dischargers No regulation if- Discharge ceases Conductivity below 315 µS/cm 30 June 2010
2004 Salt and Boron TMDL USBR Load allocation Management Agency Agreement or Waste Discharge Requirements 30 June 2010
USBR Presentation 30 June 2010
Beneficial Uses P = potential E = existing Lower San Joaquin River Reach MUN AGR PROC REC-1 REC-2 WARM COLD MIGR SPWN WILD Municipal and Domestic Supply Irrigation Stock Watering Industrial Process Supply Contact Canoeing and Rafting Other Noncontact Freshwater Habitat-Warm Freshwater Habitat-Cold Warm Cold Wildlife Habitat Mendota Dam to Sack Dam P E Sack Dam to Merced River Merced River to Vernalis 30 June 2010 P = potential E = existing