Surface Water   Non-interactive line graphic




A network of stream gages record and telemeter river stage information. Flow measurements by field crews help calibrate and confirm calculations. Data from stream gage telemetry requires careful consideration as field conditions and equipment malfunctions can provide erroneous readings. A more accurate assessment of actual flow rates requires a review of the flow record and processing to account for actual conditions. This Quality Assurance Quality Control flow data is available on the Data Download page.

Non-interactive spacer  Flow Status

Click here to view previous flow changes
  • November 29, 2012, 12 noon: Releases from Friant Dam decreased to 350 cfs for lack of exchangeable demand in Mendota Pool.
  • November 28, 2012, 12 noon: Release from Friant Dam increased to 370 cfs for Gravelly Ford compliance.
  • November 26, 2012, 12 noon: Releases from Friant Dam decreased to 350 cfs for Gravelly Ford compliance.
  • November 25, 2012, 12 noon: Releases from Friant Dam decreased to 370 cfs for Gravelly Ford compliance.
  • November 22, 2012, 12 noon: Releases from Friant Dam increased to 420 cfs for Gravelly Ford compliance.
  • November 21, 2012, 12 noon: Releases from Friant Dam increased to 375 cfs for Gravelly Ford compliance.
  • November 19, 2012, 12 noon: Releases from Friant Dam decreased to 350 cfs for Gravelly Ford compliance.
  • November 18, 2012, 12 noon: Releases from Friant Dam decreased to 385 cfs for Gravelly Ford compliance.
  • November 14, 2012, 12 noon: Releases from Friant Dam increased to 475 cfs for Gravelly Ford compliance.
  • November 11, 2012, 12 noon: Releases from Friant Dam decreased to 425 cfs for Gravelly Ford compliance and Friant Dam operational constraints.
  • November 5, 2012, 12 noon: Releases from Friant Dam increased to 775 cfs for Gravelly Ford compliance.
  • November 1, 2012, 12 noon: Releases from Friant Dam increased to 750 cfs per the RA recommendation for the fall pulse and Gravelly Ford flow target compliance.
  • October 28, 2012, 12 noon: Releases from Friant Dam increased to 390 cfs for Gravelly Ford flow target compliance.
  • October 24, 2012, 12 noon: Releases from Friant Dam decreased to 375 cfs for Gravelly Ford flow target compliance.
  • October 20, 2012, 12 noon: Releases from Friant Dam increased to 405 cfs for Gravelly Ford flow target compliance.
  • October 18, 2012, 12 noon: Releases from Friant Dam increased to 390 cfs for Gravelly Ford flow target compliance.
  • October 16, 2012, 12 noon: Releases from Friant Dam decreased to 375 cfs for Gravelly Ford flow target compliance.
  • October 10, 2012, 12 noon: Releases from Friant Dam increased to 400 cfs for Gravelly Ford flow target compliance.
  • September 24, 2012, 12 noon: Releases from Friant Dam increased to 350 cfs for combined riparian diversion and Interim Flows.
  • September 4, 2012, 12 noon: Releases from Friant Dam decreased to 185 cfs of riparian diversion releases to allow for repairs of the Chowchilla Bypass Bifurcation Structure.
  • May 29, 2012: 12 noon: Releases from Friant Dam decreased to 350 cfs.
  • May 28, 2012: 12 noon: Releases from Friant Dam decreased to 365 cfs.
  • May 27, 2012: 12 noon: Releases from Friant Dam decreased to 700 cfs.
  • May 26, 2012: 12 noon: Releases from Friant Dam decreased to 900 cfs.
  • May 7, 2012: 12 noon: Combined Interim Flow and riparian diversion releases from Friant Dam increased to 1100 cfs.
  • May 2, 2012: 12 noon: Combined Interim Flow and riparian diversion releases from Friant Dam increased to 1000 cfs.
  • April 24, 2012: 12 noon: Combined Interim Flow and riparian diversion releases from Friant Dam increased to 700 cfs.
  • April 17, 2012: 12 noon: Combined Interim Flow and riparian diversion releases from Friant Dam increased to 500 cfs.
  • March 7, 2012: CCID discharging Poso Canal water into the San Joaquin River at Washington Road.
  • March 1, 2012: Combined Friant Dam releases decreased to 365 cfs per the RA's recommendation of 350 cfs plus additional flow to meet the Gravelly Ford flow target.
  • February 28, 2012: Combined Interim Flow and riparian diversion releases from Friant Dam increased to 435 cfs to meet the Gravelly Ford flow target.
  • February 14, 2012: 12:00 noon: Combined Friant Dam releases increased to 410 cfs to make up for prior emergency maintenance.
  • February 13, 2012: 12:00 noon: Combined Friant Dam releases increased to 375 cfs to make up for prior emergency maintenance.
  • February 6, 2012: 12:00 noon: Combined Interim Flow and riparian diversion releases from Friant Dam increased to 350 cfs.
  • January 22, 2012, 9:00 pm: Combined Interim Flow and riparian diverter releases from Friant Dam increased to 285 cfs as operators were made aware that the powerplant issues were not fixed. 285 cfs is the maximum release from the two 18" valves at Friant Dam. Otherwise one large valve releases 460 cfs.
  • January 22, 2012, 3:00 pm: Combined Interim Flow and riparian diverter releases from Friant Dam decreased to 250 cfs in anticipation of the powerplant issues being fixed.
  • January 22, 2012, 8:00 am: Combined Interim Flow and riparian diverter releases from Friant Dam increased to 460 cfs to compensate for the previous evening's decrease.
  • January 21, 2012, 10:00 pm: Combined Interim Flow and riparian diverter releases from Friant Dam decreased to 195 cfs due to a power failure at the Friant Dam powerplant.
  • January 17, 2012: Interim Flow and riparian diverter release from Friant Dam increased to 350 cfs.
  • November 11, 2011: Interim Flow releases stopped below Sack Dam.
  • November 10, 2011: Interim Flow release from Sack Dam increased to 80 cfs.
  • November 6, 2011: 10:00 am: Interim Flow and riparian diverter release from Friant Dam decreased to 0 cfs.
  • October 27, 2011: Interim Flow release from Sack Dam increased to 50 cfs.
  • October 21, 2011: 10:00 am: Interim Flow and riparian diverter release from Friant Dam decreased to 350 cfs.
  • October 11, 2011: 10:00 am: Interim Flow and riparian diverter release from Friant Dam increased to 700 cfs.
  • July 16, 2011: 8:00 pm: Flood release from Friant Dam decreased to 350 cfs for Interim Flows and riparian diversions.
  • July 15, 2011: 7:30 pm: Flood release from Friant Dam decreased to 650 cfs.
  • July 15, 2011: 3:00 pm: Flood release from Friant Dam decreased to 1000 cfs.
  • July 15, 2011: 1:00 pm: Flood release from Friant Dam decreased to 1500 cfs.
  • July 15, 2011:7:00 am: Flood release from Friant Dam decreased to 2000 cfs.
  • July 14, 2011: 2:00 pm: Flood release from Friant Dam increased to 3000 cfs.
  • July 13, 2011: 4:00 pm: Flood release from Friant Dam increased to 2500 cfs.
  • July 13, 2011: 9:00 am: Flood release from Friant Dam increased to 2000 cfs.
  • July 13, 2011: 6:00 am: Flood release from Friant Dam is re-established at 1000 cfs.
  • July 12, 2011: 11:00 am: Flood release from Friant Dam terminated. Release is 350 cfs.
  • July 12, 2011: 10:00 am: Flood release from Friant Dam decreased to 1500 cfs.
  • July 12, 2011: 7:00 am: Flood release from Friant Dam decreased to 2000 cfs.
  • July 12, 2011: 4:30 am: Flood release from Friant Dam decreased to 3000 cfs.
  • July 12, 2011: 2:00 am: Flood release from Friant Dam decreased to 3500 cfs.
  • July 11, 2011: 9:30 pm: Flood release from Friant Dam decreased to 4000 cfs.
  • July 11, 2011: 6:30 pm: Flood release from Friant Dam decreased to 4500 cfs.
  • July 11, 2011: 8:00 am: Flood release from Friant Dam decreased to 5000 cfs.
  • July 10, 2011: 1:00 pm: Flood release from Friant Dam decreased to 6000 cfs. Flow over the spillway stopped.
  • July 9, 2011: 1:00 pm: Flood release from Friant Dam increased to 7000 cfs. Estimated flow over the spillway at the time was 520 cfs.
  • July 7, 2011: 2:00 pm: Flood release from Friant Dam increased to 6750 cfs. Estimated flow over the spillway as of July 7 at 2pm was 1100 cfs.
  • July 7, 2011: 11:00 am: Flood release from Friant Dam increased to 6500 cfs.
  • July 7, 2011: 9:00 am: Flood release from Friant Dam increased to 6000 cfs.
  • July 7, 2011: 2:00 am: Flood release from Friant Dam increased to 5500 cfs. Estimated flow over the spillway is 850 cfs as of the morning of July 7.
  • July 6, 2011: 2:00 pm: Flood release from Friant Dam increased to 5000 cfs.
  • July 6, 2011: 11:00 am: Flood release from Friant Dam increased to 4500 cfs. Estimated flow over the spillway at the time was 600 cfs.
  • July 5, 2011: 3:00 pm: Flood release from Friant Dam increased to 4000 cfs.
  • July 5, 2011: 9:00 am: Flood release from Friant Dam increased to 3500 cfs.
  • July 2, 2011: 4:00 pm: Flood release from Friant Dam decreased to 2500 cfs.
  • June 28, 2011: 2:00 pm: Flood release from Friant Dam decreased to 3500 cfs.
  • June 28, 2011: 9:00 am: Flood release from Friant Dam decreased to 4000 cfs.
  • June 27, 2011: 2:00 pm: Flood release from Friant Dam decreased to 4500 cfs.
  • June 24, 2011: 9:00 am: Flood release from Friant Dam decreased to 5000 cfs.
  • June 23, 2011: 3:00 pm: Flood release from Friant Dam decreased to 5500 cfs.
  • June 21, 2011: 9:00 am: Flood release from Friant Dam increased to 6000 cfs.
  • June 20, 2011: 4:00 pm: Flood release from Friant Dam increased to 5500 cfs.
  • June 18, 2011: 9:00 am: Flood release from Friant Dam increased to 5000 cfs.
  • June 17, 2011: 9:00 am: Flow released from Friant Dam increased to 4500 cfs. Releases controlled by flood.
  • June 15, 2011: 2:00 pm: Flow released from Friant Dam increased to 3500 cfs. Releases controlled by flood.
  • June 9, 2011: 9:00 am: Flow released from Friant Dam increased to 2900 cfs. Releases controlled by flood.
  • June 6, 2011: 2:00 pm: Flow released from Friant Dam decreased to 2400 cfs. Releases controlled by flood.
  • June 5, 2011: 2:00 pm: Flow released from Friant Dam decreased to 2500 cfs. Releases controlled by flood.
  • June 4, 2011: 2:00 pm: Flow released from Friant Dam decreased to 2600 cfs. Releases controlled by flood.
  • June 3, 2011: 2:00 pm: Flow released from Friant Dam decreased to 2700 cfs. Releases controlled by flood.
  • June 2, 2011: 2:00 pm: Flow released from Friant Dam decreased to 2800 cfs. Releases controlled by flood.
  • May 12, 2011: 12:00: Flow released from Friant Dam decreased to 2900 cfs. Releases controlled by flood.
  • May 11, 2011: 12:00: Flow released from Friant Dam decreased to 3100 cfs. Releases controlled by flood.
  • May 10, 2011: 12:00: Flow released from Friant Dam decreased to 3300 cfs. Releases controlled by flood.
  • May 9, 2011: 12:00: Flow released from Friant Dam decreased to 3500 cfs. Releases controlled by flood concerns.
  • May 8, 2011: 12:00: Flow released from Friant Dam controlled by flood space decreased to 3700 cfs.
  • May 7, 2011: 12:00: Flow released from Friant Dam controlled by flood decreased to 3900 cfs.
  • May 6, 2011: 12:00: Flow released from Friant Dam controlled by flood releases decreased to 4100 cfs.
  • May 5, 2011: 12:00 noon: Flow released from Friant Dam controlled by flood space decreased to 4300 cfs.
  • April 28, 2011: 9:00 am: Flow released from Friant Dam controlled by flood space decreased to 4500 cfs.
  • April 26, 2011: 2:00 pm: Flow released from Friant Dam controlled by flood space decreased to 5300 cfs.
  • April 20, 2011: 2:00 pm: Flows released from Friant Dam decreased to 6100 cfs for flood releases.
  • April 8, 2011: 4:30 pm: Flows released from Friant Dam decreased to 6500 cfs controlled by flood conservation space concerns. 750 cfs of flood releases was added to the Madera Canal for a total of 1000 cfs of flood in the Madera Canal.
  • April 4, 2011: 8:30 am: Flows released from Friant Dam decreased to 7250 cfs for flood releases. 250 cfs was routed through Madera Canal to Ash and Berenda Slough to the Eastside Bypass.
  • March 31, 2011: 12:00 pm: Flows released from Friant Dam increased to 7500 cfs for flood releases.
  • March 28, 2011: 8:30 am: Flows released from Friant Dam increased to 7000 cfs for flood releases.
  • March 25, 2011: 3:00 pm: Flows released from Friant Dam increased to 6000 cfs for flood releases.
  • March 24, 2011: 10:30 am: Flows released from Friant Dam increased to 5000 cfs for flood releases.
  • March 23, 2011: 5:00 pm: Flows at Friant increased to 4000 cfs for flood releases.
  • March 21, 2011: 2:00 pm: Flows at Friant increased to 2500 cfs for flood releases.
  • March 10, 2011: Interim Flows below Mendota Dam increased to 50 cfs as threshold constraint lifted.
  • March 7, 2011: Interim Flows below Mendota Dam decreased to 0 cfs for MW-10-75 thresholds.
  • March 4, 2011: 9:00 am: Flows at Friant increased to 700 cfs for Interim Flow releases.
  • February 1, 2011: 8:30 am: Flows at Friant decreased to 200 cfs for Interim Flow releases.
  • January 27, 2011: 9:00 am: Flows at Friant decreased to 700 cfs for flood releases.
  • January 24, 2011: 10:30am: Flows at Friant decreased to 1150 cfs for flood releases.
  • January 14, 2011: Flows at Friant decreased to 1850 cfs for flood releases.
  • January 11, 2011: Flows at Friant decreased to 3000 cfs for flood releases.
  • January 4, 2011: Flows at Friant increased to 6000 cfs for flood releases.
  • December 30, 2010: Flows at Friant increased to 4000 cfs for flood releases.
  • December 1, 2010: Flows at Friant reduced to only riparian demands.
  • November 22, 2010: Flows at Friant reduced to 310 cfs due to O'Neil pumping and maintenance
  • November 15, 2010, 3:00 pm: Flows at Friant increased to 700 cfs for fall pulse
  • October 26, 2010: Flows reached Washington Road
  • October 20, 2010: Flows below Sack Dam resumed.
  • October 13, 2010 1:00 pm: Flows at Friant decreased to 350 cfs
  • October 7, 2010 1:00 pm: Flows at Friant increased to 375 cfs to adjust for increased riparian diversions

Interim Flow Constraints

  • Groundwater level threshold adjacent to the Eastside Bypass

Please see the Daily Evaluation of Flow and Seepage Constraints for more detailed daily updates regarding Seepage Hotline Calls and groundwater levels in priority wells.

Gaging Station Updates

  • 11/8/2012 - SJN - A continuous water temperature and specific conductance sonde was installed at the gage. real-time measurements are incorrect while installation quirks are fixed.
  • The water level recorder cable in MW-09-89 rusted through and recorded a sudden drop in groundwater level on 10/27/2011. The cable was re-measured and adjusted on CDEC on 10/31/2011 at 15:00 hours.
  • Gaging Station SJB changed from reporting in elevation to reporting in stage on 8/28/2011.

Non-interactive spacer  Tracking the River's End      top

The following maps show the location of the river front over time.


Non-interactive spacer  Millerton Daily Operations Report      top

This Report consists of the previous day's Friant release flow rate and other data.


Non-interactive spacer  Stream Gage Telemetry      top

Telemetered stream gage stations with stage/flow information available at the California Data Exchange Center.

Real

MIL - Millerton Lake SJN - San Mateo Rd CTK - Cottonwood Creek SJF - Below Friant H41 - Highway 41 LDC - Little Dry Creek DNB - Donny Bridge GRF - Gravelly Ford JBP - James Bypass SJB - Bifurcation CBP - Chowchilla Bypass DM3 - Delta Mendota Canal MEN - Mendota Pool SDP - Sack Dam EBM - Eastside Bypass below Mariposa SWA - Washington Ave SSH - Salt Slough ELN - El Nido Road BSD - Bear Creek MSG - Mud Slough SJS - Stevinson FFB - Fremont Ford Bridge SMN - Newman
CDEC Code

Flow

Stage

MIL San Joaquin River Release Reservoir Elevation
CTK Cottonwood Creek Cottonwood Creek
SJF Below Friant Below Friant
LDC Little Dry Creek Little Dry Creek
H41 Highway 41
DNB Donny Bridge (Rd 32) Donny Bridge (Rd 32)
GRF Gravelly Ford Gravelly Ford
CBP Chowchilla Bypass Chowchilla Bypass
SJB Below Bifurcation Below Bifurcation
SJN San Mateo Ave near Mendota San Mateo Ave near Mendota
JBP James Bypass James Bypass
DM3 Delta Mendota Canal Check 21
MEN Near Mendota Near Mendota
SDP Near Dos Palos Near Dos Palos
SWA Washington Road Washington Road
ELN Eastside Bypass near El Nido Eastside Bypass near El Nido
EBM Eastside Bypass below Mariposa Eastside Bypass below Mariposa
BSD   Bear Creek
SJS Stevinson Stevinson
SSH Salt Slough Salt Slough
FFB Fremont Ford Fremont Ford
MSG Mud Slough Mud Slough
SMN Near Newman Near Newman


Non-interactive spacer Measurements      top

  • Flow and Stage Atlas
    • Flow Atlas Maps
    • Stage Atlas Maps
    • Graphs

  • Manual Measurements for Gage Shift Corrections     
SJRRP staff manually measure at gage locations to verify and adjust rating curves. Posted results provide provisional estimates subject to revision during review and finalization. Below are USGS measurements and links to the USGS NWIS database containing all USGS measurements. Please see the Reclamation and DWR measurement spreadsheet on the data page.

Below Friant - See all measurements here

San Mateo Ave - See all measurements here

Below Mendota - See all measurements here

Posted results provide provisional estimates subject to revision during review and finalization.

Non-interactive spacer  Manual Measurements at Non-Gaged Locations      top

Other manual measurements of flow rates done periodically are available in the Annual Technical Report.



top

Non-Interactive Line

Contact the San Joaquin River Restoration Program
March 4, 2014

 

© Copyright 2013. San Joaquin River Restoration Program. All Rights Reserved.