National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

 | 

SAN JOAQUIN RIVER - GRAVELLY FORD (GVAC1)
Latitude: 36.80º NLongitude: 120.16º WElevation: 170 FeetForecast Type: Unofficial Location
Location: Fresno County in CaliforniaBulletin Group: San JoaquinRiver Group: San Joaquin
Issuance Time: May 11 2026 at 8:22 AM PDTNext Issuance: May 12 2026 at 9:00 AM PDT
Action/Monitor: N/A Minor Flood: N/A Moderate Flood: N/A Major Flood: N/A


# Tabular Observed and Forecast Hydrograph Information
#
# Location: San Joaquin River - Gravelly Ford (GVAC1)
#
# File Generation Time:  05/11/2026 at 08:24 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/06/2026 at 08:00 AM PDT
# Maximum Observed Stage:                       4.87 Feet
# Maximum Observed Flow:                        619 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/16/2026 at 03:00 AM PDT
# Maximum Forecast Stage:                       3.92 Feet
# Maximum Forecast Flow:                        341 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/06/2026 08 AM PDT            4.87            619                Not Applicable
  05/06/2026 09 AM PDT            4.82            603         -      Not Applicable
  05/06/2026 10 AM PDT            4.81            599         -      Not Applicable
  05/06/2026 11 AM PDT            4.80            596         -      Not Applicable
  05/06/2026 12 PM PDT            4.79            593         -      Not Applicable
  05/06/2026 01 PM PDT            4.86            616         +      Not Applicable
  05/06/2026 02 PM PDT            4.85            613         -      Not Applicable
  05/06/2026 03 PM PDT            4.80            596         -      Not Applicable
  05/06/2026 04 PM PDT            4.77            586         -      Not Applicable
  05/06/2026 05 PM PDT            4.71            566         -      Not Applicable
  05/06/2026 06 PM PDT            4.81            599         +      Not Applicable
  05/06/2026 07 PM PDT            4.74            576         -      Not Applicable
  05/06/2026 08 PM PDT            4.64            544         -      Not Applicable
  05/06/2026 09 PM PDT            4.61            535         -      Not Applicable
  05/06/2026 10 PM PDT            4.57            522         -      Not Applicable
  05/06/2026 11 PM PDT            4.65            547         +      Not Applicable
  05/07/2026 12 AM PDT            4.55            516         -      Not Applicable
  05/07/2026 01 AM PDT            4.65            547         +      Not Applicable
  05/07/2026 02 AM PDT            4.54            513         -      Not Applicable
  05/07/2026 03 AM PDT            4.50            501         -      Not Applicable
  05/07/2026 04 AM PDT            4.51            504         +      Not Applicable
  05/07/2026 05 AM PDT            4.49            498         -      Not Applicable
  05/07/2026 06 AM PDT            4.44            483         -      Not Applicable
  05/07/2026 07 AM PDT            4.36            459         -      Not Applicable
  05/07/2026 08 AM PDT            4.40            471         +      Not Applicable
  05/07/2026 09 AM PDT            4.42            477         +      Not Applicable
  05/07/2026 10 AM PDT            4.42            477         0      Not Applicable
  05/07/2026 11 AM PDT            4.31            445         -      Not Applicable
  05/07/2026 12 PM PDT            4.27            433         -      Not Applicable
  05/07/2026 01 PM PDT            4.26            431         -      Not Applicable
  05/07/2026 02 PM PDT            4.33            450         +      Not Applicable
  05/07/2026 03 PM PDT            4.30            442         -      Not Applicable
  05/07/2026 04 PM PDT            4.20            414         -      Not Applicable
  05/07/2026 05 PM PDT            4.19            411         -      Not Applicable
  05/07/2026 06 PM PDT            4.25            428         +      Not Applicable
  05/07/2026 07 PM PDT            4.28            436         +      Not Applicable
  05/07/2026 08 PM PDT            4.21            417         -      Not Applicable
  05/07/2026 09 PM PDT            4.14            398         -      Not Applicable
  05/07/2026 10 PM PDT            4.13            395         -      Not Applicable
  05/07/2026 11 PM PDT            4.12            392         -      Not Applicable
  05/08/2026 12 AM PDT            4.18            408         +      Not Applicable
  05/08/2026 01 AM PDT            4.18            408         0      Not Applicable
  05/08/2026 02 AM PDT            4.16            403         -      Not Applicable
  05/08/2026 03 AM PDT            4.08            382         -      Not Applicable
  05/08/2026 04 AM PDT            4.07            379         -      Not Applicable
  05/08/2026 05 AM PDT            4.06            376         -      Not Applicable
  05/08/2026 06 AM PDT            4.05            374         -      Not Applicable
  05/08/2026 07 AM PDT            4.03            369         -      Not Applicable
  05/08/2026 08 AM PDT            4.03            369         0      Not Applicable
  05/08/2026 09 AM PDT            4.03            369         0      Not Applicable
  05/08/2026 10 AM PDT            4.02            366         -      Not Applicable
  05/08/2026 11 AM PDT            4.00            361         -      Not Applicable
  05/08/2026 12 PM PDT            4.00            361         0      Not Applicable
  05/08/2026 01 PM PDT            4.00            361         0      Not Applicable
  05/08/2026 02 PM PDT            4.08            382         +      Not Applicable
  05/08/2026 03 PM PDT            4.05            374         -      Not Applicable
  05/08/2026 04 PM PDT            4.04            371         -      Not Applicable
  05/08/2026 05 PM PDT            3.96            351         -      Not Applicable
  05/08/2026 06 PM PDT            3.95            348         -      Not Applicable
  05/08/2026 07 PM PDT            4.02            366         +      Not Applicable
  05/08/2026 08 PM PDT            3.97            353         -      Not Applicable
  05/08/2026 09 PM PDT            4.00            361         +      Not Applicable
  05/08/2026 10 PM PDT            4.01            363         +      Not Applicable
  05/08/2026 11 PM PDT            4.01            363         0      Not Applicable
  05/09/2026 12 AM PDT            3.91            338         -      Not Applicable
  05/09/2026 01 AM PDT            3.90            336         -      Not Applicable
  05/09/2026 02 AM PDT            3.89            333         -      Not Applicable
  05/09/2026 03 AM PDT            3.93            343         +      Not Applicable
  05/09/2026 04 AM PDT            3.88            331         -      Not Applicable
  05/09/2026 05 AM PDT            3.88            331         0      Not Applicable
  05/09/2026 06 AM PDT            3.87            328         -      Not Applicable
  05/09/2026 07 AM PDT            3.88            331         +      Not Applicable
  05/09/2026 08 AM PDT            3.87            328         -      Not Applicable
  05/09/2026 09 AM PDT            3.87            328         0      Not Applicable
  05/09/2026 10 AM PDT            3.87            328         0      Not Applicable
  05/09/2026 11 AM PDT            3.87            328         0      Not Applicable
  05/09/2026 12 PM PDT            3.86            326         -      Not Applicable
  05/09/2026 01 PM PDT            3.86            326         0      Not Applicable
  05/09/2026 02 PM PDT            3.92            341         +      Not Applicable
  05/09/2026 03 PM PDT            3.86            326         -      Not Applicable
  05/09/2026 04 PM PDT            3.88            331         +      Not Applicable
  05/09/2026 05 PM PDT            3.88            331         0      Not Applicable
  05/09/2026 06 PM PDT            3.86            326         -      Not Applicable
  05/09/2026 07 PM PDT            3.87            328         +      Not Applicable
  05/09/2026 08 PM PDT            3.86            326         -      Not Applicable
  05/09/2026 09 PM PDT            3.86            326         0      Not Applicable
  05/09/2026 10 PM PDT            3.87            328         +      Not Applicable
  05/09/2026 11 PM PDT            3.87            328         0      Not Applicable
  05/10/2026 12 AM PDT            3.86            326         -      Not Applicable
  05/10/2026 01 AM PDT            3.86            326         0      Not Applicable
  05/10/2026 02 AM PDT            3.86            326         0      Not Applicable
  05/10/2026 03 AM PDT            3.86            326         0      Not Applicable
  05/10/2026 04 AM PDT            3.86            326         0      Not Applicable
  05/10/2026 05 AM PDT            3.85            324         -      Not Applicable
  05/10/2026 06 AM PDT            3.85            324         0      Not Applicable
  05/10/2026 07 AM PDT            3.85            324         0      Not Applicable
  05/10/2026 08 AM PDT            3.86            326         +      Not Applicable
  05/10/2026 09 AM PDT            3.86            326         0      Not Applicable
  05/10/2026 10 AM PDT            3.86            326         0      Not Applicable
  05/10/2026 11 AM PDT            3.86            326         0      Not Applicable
  05/10/2026 12 PM PDT            3.86            326         0      Not Applicable
  05/10/2026 01 PM PDT            3.85            324         -      Not Applicable
  05/10/2026 02 PM PDT            3.85            324         0      Not Applicable
  05/10/2026 03 PM PDT            3.85            324         0      Not Applicable
  05/10/2026 04 PM PDT            3.85            324         0      Not Applicable
  05/10/2026 05 PM PDT            3.85            324         0      Not Applicable
  05/10/2026 06 PM PDT            3.85            324         0      Not Applicable
  05/10/2026 07 PM PDT            3.85            324         0      Not Applicable
  05/10/2026 08 PM PDT            3.85            324         0      Not Applicable
  05/10/2026 09 PM PDT            3.85            324         0      Not Applicable
  05/10/2026 10 PM PDT            3.85            324         0      Not Applicable
  05/10/2026 11 PM PDT            3.85            324         0      Not Applicable
  05/11/2026 12 AM PDT            3.85            324         0      Not Applicable
  05/11/2026 01 AM PDT            3.85            324         0      Not Applicable
  05/11/2026 02 AM PDT            3.85            324         0      Not Applicable
  05/11/2026 03 AM PDT            3.86            326         +      Not Applicable
  05/11/2026 04 AM PDT            3.86            326         0      Not Applicable
  05/11/2026 05 AM PDT            3.86            326         0      Not Applicable
  05/11/2026 06 AM PDT            3.86            326         0      Not Applicable
  05/11/2026 07 AM PDT            3.86            326         0      Not Applicable
  05/11/2026 08 AM PDT            3.86            326         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/11/2026 09 AM PDT            3.86            326                Not Applicable
  05/11/2026 10 AM PDT            3.86            326         0      Not Applicable
  05/11/2026 11 AM PDT            3.86            326         0      Not Applicable
  05/11/2026 12 PM PDT            3.86            326         0      Not Applicable
  05/11/2026 01 PM PDT            3.86            326         0      Not Applicable
  05/11/2026 02 PM PDT            3.86            326         0      Not Applicable
  05/11/2026 03 PM PDT            3.86            326         0      Not Applicable
  05/11/2026 04 PM PDT            3.86            326         0      Not Applicable
  05/11/2026 05 PM PDT            3.86            326         0      Not Applicable
  05/11/2026 06 PM PDT            3.86            326         0      Not Applicable
  05/11/2026 07 PM PDT            3.86            326         0      Not Applicable
  05/11/2026 08 PM PDT            3.86            326         0      Not Applicable
  05/11/2026 09 PM PDT            3.87            328         +      Not Applicable
  05/11/2026 10 PM PDT            3.87            328         0      Not Applicable
  05/11/2026 11 PM PDT            3.87            328         0      Not Applicable
  05/12/2026 12 AM PDT            3.87            328         0      Not Applicable
  05/12/2026 01 AM PDT            3.87            328         0      Not Applicable
  05/12/2026 02 AM PDT            3.87            328         0      Not Applicable
  05/12/2026 03 AM PDT            3.87            328         0      Not Applicable
  05/12/2026 04 AM PDT            3.87            328         0      Not Applicable
  05/12/2026 05 AM PDT            3.88            331         +      Not Applicable
  05/12/2026 06 AM PDT            3.88            331         0      Not Applicable
  05/12/2026 07 AM PDT            3.88            331         0      Not Applicable
  05/12/2026 08 AM PDT            3.88            331         0      Not Applicable
  05/12/2026 09 AM PDT            3.88            331         0      Not Applicable
  05/12/2026 10 AM PDT            3.88            331         0      Not Applicable
  05/12/2026 11 AM PDT            3.88            331         0      Not Applicable
  05/12/2026 12 PM PDT            3.88            331         0      Not Applicable
  05/12/2026 01 PM PDT            3.88            331         0      Not Applicable
  05/12/2026 02 PM PDT            3.88            331         0      Not Applicable
  05/12/2026 03 PM PDT            3.88            331         0      Not Applicable
  05/12/2026 04 PM PDT            3.88            331         0      Not Applicable
  05/12/2026 05 PM PDT            3.89            333         +      Not Applicable
  05/12/2026 06 PM PDT            3.89            333         0      Not Applicable
  05/12/2026 07 PM PDT            3.89            333         0      Not Applicable
  05/12/2026 08 PM PDT            3.89            333         0      Not Applicable
  05/12/2026 09 PM PDT            3.89            333         0      Not Applicable
  05/12/2026 10 PM PDT            3.89            333         0      Not Applicable
  05/12/2026 11 PM PDT            3.89            333         0      Not Applicable
  05/13/2026 12 AM PDT            3.89            333         0      Not Applicable
  05/13/2026 01 AM PDT            3.89            333         0      Not Applicable
  05/13/2026 02 AM PDT            3.89            333         0      Not Applicable
  05/13/2026 03 AM PDT            3.89            333         0      Not Applicable
  05/13/2026 04 AM PDT            3.89            333         0      Not Applicable
  05/13/2026 05 AM PDT            3.89            333         0      Not Applicable
  05/13/2026 06 AM PDT            3.89            333         0      Not Applicable
  05/13/2026 07 AM PDT            3.90            336         +      Not Applicable
  05/13/2026 08 AM PDT            3.90            336         0      Not Applicable
  05/13/2026 09 AM PDT            3.90            336         0      Not Applicable
  05/13/2026 10 AM PDT            3.90            336         0      Not Applicable
  05/13/2026 11 AM PDT            3.90            336         0      Not Applicable
  05/13/2026 12 PM PDT            3.90            336         0      Not Applicable
  05/13/2026 01 PM PDT            3.90            336         0      Not Applicable
  05/13/2026 02 PM PDT            3.90            336         0      Not Applicable
  05/13/2026 03 PM PDT            3.90            336         0      Not Applicable
  05/13/2026 04 PM PDT            3.90            336         0      Not Applicable
  05/13/2026 05 PM PDT            3.90            336         0      Not Applicable
  05/13/2026 06 PM PDT            3.90            336         0      Not Applicable
  05/13/2026 07 PM PDT            3.90            336         0      Not Applicable
  05/13/2026 08 PM PDT            3.90            336         0      Not Applicable
  05/13/2026 09 PM PDT            3.90            336         0      Not Applicable
  05/13/2026 10 PM PDT            3.90            336         0      Not Applicable
  05/13/2026 11 PM PDT            3.90            336         0      Not Applicable
  05/14/2026 12 AM PDT            3.90            336         0      Not Applicable
  05/14/2026 01 AM PDT            3.90            336         0      Not Applicable
  05/14/2026 02 AM PDT            3.90            336         0      Not Applicable
  05/14/2026 03 AM PDT            3.90            336         0      Not Applicable
  05/14/2026 04 AM PDT            3.90            336         0      Not Applicable
  05/14/2026 05 AM PDT            3.90            336         0      Not Applicable
  05/14/2026 06 AM PDT            3.90            336         0      Not Applicable
  05/14/2026 07 AM PDT            3.90            336         0      Not Applicable
  05/14/2026 08 AM PDT            3.90            336         0      Not Applicable
  05/14/2026 09 AM PDT            3.91            338         +      Not Applicable
  05/14/2026 10 AM PDT            3.91            338         0      Not Applicable
  05/14/2026 11 AM PDT            3.91            338         0      Not Applicable
  05/14/2026 12 PM PDT            3.91            338         0      Not Applicable
  05/14/2026 01 PM PDT            3.91            338         0      Not Applicable
  05/14/2026 02 PM PDT            3.91            338         0      Not Applicable
  05/14/2026 03 PM PDT            3.91            338         0      Not Applicable
  05/14/2026 04 PM PDT            3.91            338         0      Not Applicable
  05/14/2026 05 PM PDT            3.91            338         0      Not Applicable
  05/14/2026 06 PM PDT            3.91            338         0      Not Applicable
  05/14/2026 07 PM PDT            3.91            338         0      Not Applicable
  05/14/2026 08 PM PDT            3.91            338         0      Not Applicable
  05/14/2026 09 PM PDT            3.91            338         0      Not Applicable
  05/14/2026 10 PM PDT            3.91            338         0      Not Applicable
  05/14/2026 11 PM PDT            3.91            338         0      Not Applicable
  05/15/2026 12 AM PDT            3.91            338         0      Not Applicable
  05/15/2026 01 AM PDT            3.91            338         0      Not Applicable
  05/15/2026 02 AM PDT            3.91            338         0      Not Applicable
  05/15/2026 03 AM PDT            3.91            338         0      Not Applicable
  05/15/2026 04 AM PDT            3.91            338         0      Not Applicable
  05/15/2026 05 AM PDT            3.91            338         0      Not Applicable
  05/15/2026 06 AM PDT            3.91            338         0      Not Applicable
  05/15/2026 07 AM PDT            3.91            338         0      Not Applicable
  05/15/2026 08 AM PDT            3.91            338         0      Not Applicable
  05/15/2026 09 AM PDT            3.91            338         0      Not Applicable
  05/15/2026 10 AM PDT            3.91            338         0      Not Applicable
  05/15/2026 11 AM PDT            3.91            338         0      Not Applicable
  05/15/2026 12 PM PDT            3.91            338         0      Not Applicable
  05/15/2026 01 PM PDT            3.91            338         0      Not Applicable
  05/15/2026 02 PM PDT            3.91            338         0      Not Applicable
  05/15/2026 03 PM PDT            3.91            338         0      Not Applicable
  05/15/2026 04 PM PDT            3.91            338         0      Not Applicable
  05/15/2026 05 PM PDT            3.91            338         0      Not Applicable
  05/15/2026 06 PM PDT            3.91            338         0      Not Applicable
  05/15/2026 07 PM PDT            3.91            338         0      Not Applicable
  05/15/2026 08 PM PDT            3.91            338         0      Not Applicable
  05/15/2026 09 PM PDT            3.91            338         0      Not Applicable
  05/15/2026 10 PM PDT            3.91            338         0      Not Applicable
  05/15/2026 11 PM PDT            3.91            338         0      Not Applicable
  05/16/2026 12 AM PDT            3.91            338         0      Not Applicable
  05/16/2026 01 AM PDT            3.91            338         0      Not Applicable
  05/16/2026 02 AM PDT            3.91            338         0      Not Applicable
  05/16/2026 03 AM PDT            3.92            341         +      Not Applicable
  05/16/2026 04 AM PDT            3.92            341         0      Not Applicable
  05/16/2026 05 AM PDT            3.92            341         0      Not Applicable
#
# NOTE 1: Stages are rounded to the nearest hundredth (.01) of a foot.
# NOTE 2: Flows are rounded to the nearest (1) cfs.
# NOTE 3: Trends are determined using hourly change in unrounded stage and flow.
# NOTE 4: Maximum Values are determined using unrounded stage and flow.