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 06 2026 at 7:37 AM PDTNext Issuance: May 07 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:  05/06/2026 at 07:38 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/05/2026 at 09:00 PM PDT
# Maximum Observed Stage:                       4.94 Feet
# Maximum Observed Flow:                        643 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/06/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       4.83 Feet
# Maximum Forecast Flow:                        606 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/01/2026 07 AM PDT            4.90            630                Not Applicable
  05/01/2026 08 AM PDT            4.91            633         +      Not Applicable
  05/01/2026 09 AM PDT            4.91            633         0      Not Applicable
  05/01/2026 10 AM PDT            4.89            626         -      Not Applicable
  05/01/2026 11 AM PDT            4.82            603         -      Not Applicable
  05/01/2026 12 PM PDT            4.89            626         +      Not Applicable
  05/01/2026 01 PM PDT            4.91            633         +      Not Applicable
  05/01/2026 02 PM PDT            4.88            623         -      Not Applicable
  05/01/2026 03 PM PDT            4.87            619         -      Not Applicable
  05/01/2026 04 PM PDT            4.87            619         0      Not Applicable
  05/01/2026 05 PM PDT            4.86            616         -      Not Applicable
  05/01/2026 06 PM PDT            4.81            599         -      Not Applicable
  05/01/2026 07 PM PDT            4.80            596         -      Not Applicable
  05/01/2026 08 PM PDT            4.86            616         +      Not Applicable
  05/01/2026 09 PM PDT            4.89            626         +      Not Applicable
  05/01/2026 10 PM PDT            4.90            630         +      Not Applicable
  05/01/2026 11 PM PDT            4.86            616         -      Not Applicable
  05/02/2026 12 AM PDT            4.80            596         -      Not Applicable
  05/02/2026 01 AM PDT            4.86            616         +      Not Applicable
  05/02/2026 02 AM PDT            4.92            637         +      Not Applicable
  05/02/2026 03 AM PDT            4.80            596         -      Not Applicable
  05/02/2026 04 AM PDT            4.88            623         +      Not Applicable
  05/02/2026 05 AM PDT            4.87            619         -      Not Applicable
  05/02/2026 06 AM PDT            4.90            630         +      Not Applicable
  05/02/2026 07 AM PDT            4.87            619         -      Not Applicable
  05/02/2026 08 AM PDT            4.89            626         +      Not Applicable
  05/02/2026 09 AM PDT            4.89            626         0      Not Applicable
  05/02/2026 10 AM PDT            4.89            626         0      Not Applicable
  05/02/2026 11 AM PDT            4.92            637         +      Not Applicable
  05/02/2026 12 PM PDT            4.87            619         -      Not Applicable
  05/02/2026 01 PM PDT            4.80            596         -      Not Applicable
  05/02/2026 02 PM PDT            4.92            637         +      Not Applicable
  05/02/2026 03 PM PDT            4.87            619         -      Not Applicable
  05/02/2026 04 PM PDT            4.89            626         +      Not Applicable
  05/02/2026 05 PM PDT            4.80            596         -      Not Applicable
  05/02/2026 06 PM PDT            4.87            619         +      Not Applicable
  05/02/2026 07 PM PDT            4.88            623         +      Not Applicable
  05/02/2026 08 PM PDT            4.86            616         -      Not Applicable
  05/02/2026 09 PM PDT            4.84            609         -      Not Applicable
  05/02/2026 10 PM PDT            4.90            630         +      Not Applicable
  05/02/2026 11 PM PDT            4.80            596         -      Not Applicable
  05/03/2026 12 AM PDT            4.79            593         -      Not Applicable
  05/03/2026 01 AM PDT            4.86            616         +      Not Applicable
  05/03/2026 02 AM PDT            4.88            623         +      Not Applicable
  05/03/2026 03 AM PDT            4.86            616         -      Not Applicable
  05/03/2026 04 AM PDT            4.79            593         -      Not Applicable
  05/03/2026 05 AM PDT            4.84            609         +      Not Applicable
  05/03/2026 06 AM PDT            4.86            616         +      Not Applicable
  05/03/2026 07 AM PDT            4.85            613         -      Not Applicable
  05/03/2026 08 AM PDT            4.78            589         -      Not Applicable
  05/03/2026 09 AM PDT            4.78            589         0      Not Applicable
  05/03/2026 10 AM PDT            4.85            613         +      Not Applicable
  05/03/2026 11 AM PDT            4.89            626         +      Not Applicable
  05/03/2026 12 PM PDT            4.78            589         -      Not Applicable
  05/03/2026 01 PM PDT            4.78            589         0      Not Applicable
  05/03/2026 02 PM PDT            4.84            609         +      Not Applicable
  05/03/2026 03 PM PDT            4.92            637         +      Not Applicable
  05/03/2026 04 PM PDT            4.78            589         -      Not Applicable
  05/03/2026 05 PM PDT            4.77            586         -      Not Applicable
  05/03/2026 06 PM PDT            4.91            633         +      Not Applicable
  05/03/2026 07 PM PDT            4.92            637         +      Not Applicable
  05/03/2026 08 PM PDT            4.88            623         -      Not Applicable
  05/03/2026 09 PM PDT            4.79            593         -      Not Applicable
  05/03/2026 10 PM PDT            4.85            613         +      Not Applicable
  05/03/2026 11 PM PDT            4.87            619         +      Not Applicable
  05/04/2026 12 AM PDT            4.78            589         -      Not Applicable
  05/04/2026 01 AM PDT            4.77            586         -      Not Applicable
  05/04/2026 02 AM PDT            4.85            613         +      Not Applicable
  05/04/2026 03 AM PDT            4.78            589         -      Not Applicable
  05/04/2026 04 AM PDT            4.78            589         0      Not Applicable
  05/04/2026 05 AM PDT            4.83            606         +      Not Applicable
  05/04/2026 06 AM PDT            4.78            589         -      Not Applicable
  05/04/2026 07 AM PDT            4.79            593         +      Not Applicable
  05/04/2026 08 AM PDT            4.88            623         +      Not Applicable
  05/04/2026 09 AM PDT            4.78            589         -      Not Applicable
  05/04/2026 10 AM PDT            4.82            603         +      Not Applicable
  05/04/2026 11 AM PDT            4.86            616         +      Not Applicable
  05/04/2026 12 PM PDT            4.78            589         -      Not Applicable
  05/04/2026 01 PM PDT            4.77            586         -      Not Applicable
  05/04/2026 02 PM PDT            4.80            596         +      Not Applicable
  05/04/2026 03 PM PDT            4.78            589         -      Not Applicable
  05/04/2026 04 PM PDT            4.84            609         +      Not Applicable
  05/04/2026 05 PM PDT            4.78            589         -      Not Applicable
  05/04/2026 06 PM PDT            4.84            609         +      Not Applicable
  05/04/2026 07 PM PDT            4.77            586         -      Not Applicable
  05/04/2026 08 PM PDT            4.86            616         +      Not Applicable
  05/04/2026 09 PM PDT            4.85            613         -      Not Applicable
  05/04/2026 10 PM PDT            4.78            589         -      Not Applicable
  05/04/2026 11 PM PDT            4.78            589         0      Not Applicable
  05/05/2026 12 AM PDT            4.79            593         +      Not Applicable
  05/05/2026 01 AM PDT            4.79            593         0      Not Applicable
  05/05/2026 02 AM PDT            4.85            613         +      Not Applicable
  05/05/2026 03 AM PDT            4.86            616         +      Not Applicable
  05/05/2026 04 AM PDT            4.80            596         -      Not Applicable
  05/05/2026 05 AM PDT            4.80            596         0      Not Applicable
  05/05/2026 06 AM PDT            4.79            593         -      Not Applicable
  05/05/2026 07 AM PDT            4.86            616         +      Not Applicable
  05/05/2026 08 AM PDT            4.81            599         -      Not Applicable
  05/05/2026 09 AM PDT            4.81            599         0      Not Applicable
  05/05/2026 10 AM PDT            4.82            603         +      Not Applicable
  05/05/2026 11 AM PDT            4.82            603         0      Not Applicable
  05/05/2026 12 PM PDT            4.81            599         -      Not Applicable
  05/05/2026 01 PM PDT            4.87            619         +      Not Applicable
  05/05/2026 02 PM PDT            4.93            640         +      Not Applicable
  05/05/2026 03 PM PDT            4.85            613         -      Not Applicable
  05/05/2026 04 PM PDT            4.84            609         -      Not Applicable
  05/05/2026 05 PM PDT            4.84            609         0      Not Applicable
  05/05/2026 06 PM PDT            4.81            599         -      Not Applicable
  05/05/2026 07 PM PDT            4.82            603         +      Not Applicable
  05/05/2026 08 PM PDT            4.82            603         0      Not Applicable
  05/05/2026 09 PM PDT            4.94            643         +      Not Applicable
  05/05/2026 10 PM PDT            4.87            619         -      Not Applicable
  05/05/2026 11 PM PDT            4.89            626         +      Not Applicable
  05/06/2026 12 AM PDT            4.87            619         -      Not Applicable
  05/06/2026 01 AM PDT            4.83            606         -      Not Applicable
  05/06/2026 02 AM PDT            4.93            640         +      Not Applicable
  05/06/2026 03 AM PDT            4.82            603         -      Not Applicable
  05/06/2026 04 AM PDT            4.85            613         +      Not Applicable
  05/06/2026 05 AM PDT            4.88            623         +      Not Applicable
  05/06/2026 06 AM PDT            4.83            606         -      Not Applicable
  05/06/2026 07 AM PDT            4.83            606         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/06/2026 08 AM PDT            4.83            606                Not Applicable
  05/06/2026 09 AM PDT            4.83            606         0      Not Applicable
  05/06/2026 10 AM PDT            4.83            606         0      Not Applicable
  05/06/2026 11 AM PDT            4.82            603         -      Not Applicable
  05/06/2026 12 PM PDT            4.82            603         0      Not Applicable
  05/06/2026 01 PM PDT            4.80            596         -      Not Applicable
  05/06/2026 02 PM PDT            4.78            589         -      Not Applicable
  05/06/2026 03 PM PDT            4.76            583         -      Not Applicable
  05/06/2026 04 PM PDT            4.72            570         -      Not Applicable
  05/06/2026 05 PM PDT            4.69            560         -      Not Applicable
  05/06/2026 06 PM PDT            4.66            550         -      Not Applicable
  05/06/2026 07 PM PDT            4.63            541         -      Not Applicable
  05/06/2026 08 PM PDT            4.60            531         -      Not Applicable
  05/06/2026 09 PM PDT            4.57            522         -      Not Applicable
  05/06/2026 10 PM PDT            4.54            513         -      Not Applicable
  05/06/2026 11 PM PDT            4.51            504         -      Not Applicable
  05/07/2026 12 AM PDT            4.48            495         -      Not Applicable
  05/07/2026 01 AM PDT            4.45            486         -      Not Applicable
  05/07/2026 02 AM PDT            4.42            477         -      Not Applicable
  05/07/2026 03 AM PDT            4.40            471         -      Not Applicable
  05/07/2026 04 AM PDT            4.37            462         -      Not Applicable
  05/07/2026 05 AM PDT            4.35            456         -      Not Applicable
  05/07/2026 06 AM PDT            4.33            450         -      Not Applicable
  05/07/2026 07 AM PDT            4.31            445         -      Not Applicable
  05/07/2026 08 AM PDT            4.29            439         -      Not Applicable
  05/07/2026 09 AM PDT            4.27            433         -      Not Applicable
  05/07/2026 10 AM PDT            4.25            428         -      Not Applicable
  05/07/2026 11 AM PDT            4.23            422         -      Not Applicable
  05/07/2026 12 PM PDT            4.21            417         -      Not Applicable
  05/07/2026 01 PM PDT            4.19            411         -      Not Applicable
  05/07/2026 02 PM PDT            4.17            406         -      Not Applicable
  05/07/2026 03 PM PDT            4.16            403         -      Not Applicable
  05/07/2026 04 PM PDT            4.14            398         -      Not Applicable
  05/07/2026 05 PM PDT            4.12            392         -      Not Applicable
  05/07/2026 06 PM PDT            4.10            387         -      Not Applicable
  05/07/2026 07 PM PDT            4.09            384         -      Not Applicable
  05/07/2026 08 PM PDT            4.07            379         -      Not Applicable
  05/07/2026 09 PM PDT            4.06            376         -      Not Applicable
  05/07/2026 10 PM PDT            4.04            371         -      Not Applicable
  05/07/2026 11 PM PDT            4.03            369         -      Not Applicable
  05/08/2026 12 AM PDT            4.01            363         -      Not Applicable
  05/08/2026 01 AM PDT            4.00            361         -      Not Applicable
  05/08/2026 02 AM PDT            3.99            358         -      Not Applicable
  05/08/2026 03 AM PDT            3.97            353         -      Not Applicable
  05/08/2026 04 AM PDT            3.96            351         -      Not Applicable
  05/08/2026 05 AM PDT            3.95            348         -      Not Applicable
  05/08/2026 06 AM PDT            3.94            346         -      Not Applicable
  05/08/2026 07 AM PDT            3.92            341         -      Not Applicable
  05/08/2026 08 AM PDT            3.91            338         -      Not Applicable
  05/08/2026 09 AM PDT            3.90            336         -      Not Applicable
  05/08/2026 10 AM PDT            3.89            333         -      Not Applicable
  05/08/2026 11 AM PDT            3.88            331         -      Not Applicable
  05/08/2026 12 PM PDT            3.87            328         -      Not Applicable
  05/08/2026 01 PM PDT            3.86            326         -      Not Applicable
  05/08/2026 02 PM PDT            3.85            324         -      Not Applicable
  05/08/2026 03 PM PDT            3.84            321         -      Not Applicable
  05/08/2026 04 PM PDT            3.83            319         -      Not Applicable
  05/08/2026 05 PM PDT            3.82            316         -      Not Applicable
  05/08/2026 06 PM PDT            3.81            314         -      Not Applicable
  05/08/2026 07 PM PDT            3.80            312         -      Not Applicable
  05/08/2026 08 PM PDT            3.79            309         -      Not Applicable
  05/08/2026 09 PM PDT            3.79            309         0      Not Applicable
  05/08/2026 10 PM PDT            3.78            307         -      Not Applicable
  05/08/2026 11 PM PDT            3.77            305         -      Not Applicable
  05/09/2026 12 AM PDT            3.76            302         -      Not Applicable
  05/09/2026 01 AM PDT            3.75            300         -      Not Applicable
  05/09/2026 02 AM PDT            3.75            300         0      Not Applicable
  05/09/2026 03 AM PDT            3.74            298         -      Not Applicable
  05/09/2026 04 AM PDT            3.73            295         -      Not Applicable
  05/09/2026 05 AM PDT            3.73            295         0      Not Applicable
  05/09/2026 06 AM PDT            3.72            293         -      Not Applicable
  05/09/2026 07 AM PDT            3.71            291         -      Not Applicable
  05/09/2026 08 AM PDT            3.71            291         0      Not Applicable
  05/09/2026 09 AM PDT            3.70            288         -      Not Applicable
  05/09/2026 10 AM PDT            3.70            288         0      Not Applicable
  05/09/2026 11 AM PDT            3.69            286         -      Not Applicable
  05/09/2026 12 PM PDT            3.69            286         0      Not Applicable
  05/09/2026 01 PM PDT            3.68            284         -      Not Applicable
  05/09/2026 02 PM PDT            3.68            284         0      Not Applicable
  05/09/2026 03 PM PDT            3.67            281         -      Not Applicable
  05/09/2026 04 PM PDT            3.67            281         0      Not Applicable
  05/09/2026 05 PM PDT            3.67            281         0      Not Applicable
  05/09/2026 06 PM PDT            3.66            278         -      Not Applicable
  05/09/2026 07 PM PDT            3.66            278         0      Not Applicable
  05/09/2026 08 PM PDT            3.65            276         -      Not Applicable
  05/09/2026 09 PM PDT            3.65            276         0      Not Applicable
  05/09/2026 10 PM PDT            3.65            276         0      Not Applicable
  05/09/2026 11 PM PDT            3.64            273         -      Not Applicable
  05/10/2026 12 AM PDT            3.64            273         0      Not Applicable
  05/10/2026 01 AM PDT            3.64            273         0      Not Applicable
  05/10/2026 02 AM PDT            3.63            271         -      Not Applicable
  05/10/2026 03 AM PDT            3.63            271         0      Not Applicable
  05/10/2026 04 AM PDT            3.63            271         0      Not Applicable
  05/10/2026 05 AM PDT            3.62            268         -      Not Applicable
  05/10/2026 06 AM PDT            3.62            268         0      Not Applicable
  05/10/2026 07 AM PDT            3.62            268         0      Not Applicable
  05/10/2026 08 AM PDT            3.62            268         0      Not Applicable
  05/10/2026 09 AM PDT            3.61            266         -      Not Applicable
  05/10/2026 10 AM PDT            3.61            266         0      Not Applicable
  05/10/2026 11 AM PDT            3.61            266         0      Not Applicable
  05/10/2026 12 PM PDT            3.61            266         0      Not Applicable
  05/10/2026 01 PM PDT            3.60            263         -      Not Applicable
  05/10/2026 02 PM PDT            3.60            263         0      Not Applicable
  05/10/2026 03 PM PDT            3.60            263         0      Not Applicable
  05/10/2026 04 PM PDT            3.60            263         0      Not Applicable
  05/10/2026 05 PM PDT            3.60            263         0      Not Applicable
  05/10/2026 06 PM PDT            3.59            261         -      Not Applicable
  05/10/2026 07 PM PDT            3.59            261         0      Not Applicable
  05/10/2026 08 PM PDT            3.59            261         0      Not Applicable
  05/10/2026 09 PM PDT            3.59            261         0      Not Applicable
  05/10/2026 10 PM PDT            3.59            261         0      Not Applicable
  05/10/2026 11 PM PDT            3.58            258         -      Not Applicable
  05/11/2026 12 AM PDT            3.58            258         0      Not Applicable
  05/11/2026 01 AM PDT            3.58            258         0      Not Applicable
  05/11/2026 02 AM PDT            3.58            258         0      Not Applicable
  05/11/2026 03 AM PDT            3.58            258         0      Not Applicable
  05/11/2026 04 AM PDT            3.58            258         0      Not Applicable
  05/11/2026 05 AM PDT            3.58            258         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.