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

 | 

ARROYO HONDO - SAN JOSE (AHOC1)
Latitude: 37.46º NLongitude: 121.77º WElevation: 784 FeetForecast Type: Unofficial Location
Location: Santa Clara County in CaliforniaBulletin Group: Central CoastRiver Group: South Bay
Issuance Time: Apr 21 2026 at 7:21 AM PDTNext Issuance: Apr 22 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: Arroyo Hondo - San Jose (AHOC1)
#
# File Generation Time:  04/21/2026 at 07:23 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/16/2026 at 08:00 AM PDT
# Maximum Observed Stage:                       3.26 Feet
# Maximum Observed Flow:                        16 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/22/2026 at 04:00 AM PDT
# Maximum Forecast Stage:                       5.87 Feet
# Maximum Forecast Flow:                        381 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/16/2026 07 AM PDT            3.26             16                Not Applicable
  04/16/2026 08 AM PDT            3.26             16         0      Not Applicable
  04/16/2026 09 AM PDT            3.25             16         -      Not Applicable
  04/16/2026 10 AM PDT            3.25             16         0      Not Applicable
  04/16/2026 11 AM PDT            3.25             16         0      Not Applicable
  04/16/2026 12 PM PDT            3.24             16         -      Not Applicable
  04/16/2026 01 PM PDT            3.23             15         -      Not Applicable
  04/16/2026 02 PM PDT            3.23             15         0      Not Applicable
  04/16/2026 03 PM PDT            3.23             15         0      Not Applicable
  04/16/2026 04 PM PDT            3.22             15         -      Not Applicable
  04/16/2026 05 PM PDT            3.22             15         0      Not Applicable
  04/16/2026 06 PM PDT            3.22             15         0      Not Applicable
  04/16/2026 07 PM PDT            3.21             14         -      Not Applicable
  04/16/2026 08 PM PDT            3.21             14         0      Not Applicable
  04/16/2026 09 PM PDT            3.21             14         0      Not Applicable
  04/16/2026 10 PM PDT            3.21             14         0      Not Applicable
  04/16/2026 11 PM PDT            3.21             14         0      Not Applicable
  04/17/2026 12 AM PDT            3.20             14         -      Not Applicable
  04/17/2026 01 AM PDT            3.20             14         0      Not Applicable
  04/17/2026 02 AM PDT            3.20             14         0      Not Applicable
  04/17/2026 03 AM PDT            3.20             14         0      Not Applicable
  04/17/2026 04 AM PDT            3.20             14         0      Not Applicable
  04/17/2026 05 AM PDT            3.20             14         0      Not Applicable
  04/17/2026 06 AM PDT            3.20             14         0      Not Applicable
  04/17/2026 07 AM PDT            3.19             14         -      Not Applicable
  04/17/2026 08 AM PDT            3.19             14         0      Not Applicable
  04/17/2026 09 AM PDT            3.19             14         0      Not Applicable
  04/17/2026 10 AM PDT            3.19             14         0      Not Applicable
  04/17/2026 11 AM PDT            3.18             13         -      Not Applicable
  04/17/2026 12 PM PDT            3.18             13         0      Not Applicable
  04/17/2026 01 PM PDT            3.18             13         0      Not Applicable
  04/17/2026 02 PM PDT            3.17             13         -      Not Applicable
  04/17/2026 03 PM PDT            3.17             13         0      Not Applicable
  04/17/2026 04 PM PDT            3.17             13         0      Not Applicable
  04/17/2026 05 PM PDT            3.16             13         -      Not Applicable
  04/17/2026 06 PM PDT            3.16             13         0      Not Applicable
  04/17/2026 07 PM PDT            3.16             13         0      Not Applicable
  04/17/2026 08 PM PDT            3.16             13         0      Not Applicable
  04/17/2026 09 PM PDT            3.16             13         0      Not Applicable
  04/17/2026 10 PM PDT            3.16             13         0      Not Applicable
  04/17/2026 11 PM PDT            3.16             13         0      Not Applicable
  04/18/2026 12 AM PDT            3.16             13         0      Not Applicable
  04/18/2026 01 AM PDT            3.16             13         0      Not Applicable
  04/18/2026 02 AM PDT            3.15             12         -      Not Applicable
  04/18/2026 03 AM PDT            3.15             12         0      Not Applicable
  04/18/2026 04 AM PDT            3.15             12         0      Not Applicable
  04/18/2026 05 AM PDT            3.15             12         0      Not Applicable
  04/18/2026 06 AM PDT            3.15             12         0      Not Applicable
  04/18/2026 07 AM PDT            3.15             12         0      Not Applicable
  04/18/2026 08 AM PDT            3.15             12         0      Not Applicable
  04/18/2026 09 AM PDT            3.15             12         0      Not Applicable
  04/18/2026 10 AM PDT            3.15             12         0      Not Applicable
  04/18/2026 11 AM PDT            3.15             12         0      Not Applicable
  04/18/2026 12 PM PDT            3.15             12         0      Not Applicable
  04/18/2026 01 PM PDT            3.14             12         -      Not Applicable
  04/18/2026 02 PM PDT            3.14             12         0      Not Applicable
  04/18/2026 03 PM PDT            3.13             12         -      Not Applicable
  04/18/2026 04 PM PDT            3.13             12         0      Not Applicable
  04/18/2026 05 PM PDT            3.13             12         0      Not Applicable
  04/18/2026 06 PM PDT            3.13             12         0      Not Applicable
  04/18/2026 07 PM PDT            3.12             11         -      Not Applicable
  04/18/2026 08 PM PDT            3.12             11         0      Not Applicable
  04/18/2026 09 PM PDT            3.12             11         0      Not Applicable
  04/18/2026 10 PM PDT            3.12             11         0      Not Applicable
  04/18/2026 11 PM PDT            3.12             11         0      Not Applicable
  04/19/2026 12 AM PDT            3.12             11         0      Not Applicable
  04/19/2026 01 AM PDT            3.12             11         0      Not Applicable
  04/19/2026 02 AM PDT            3.12             11         0      Not Applicable
  04/19/2026 03 AM PDT            3.12             11         0      Not Applicable
  04/19/2026 04 AM PDT            3.12             11         0      Not Applicable
  04/19/2026 05 AM PDT            3.12             11         0      Not Applicable
  04/19/2026 06 AM PDT            3.12             11         0      Not Applicable
  04/19/2026 07 AM PDT            3.12             11         0      Not Applicable
  04/19/2026 08 AM PDT            3.12             11         0      Not Applicable
  04/19/2026 09 AM PDT            3.12             11         0      Not Applicable
  04/19/2026 10 AM PDT            3.12             11         0      Not Applicable
  04/19/2026 11 AM PDT            3.12             11         0      Not Applicable
  04/19/2026 12 PM PDT            3.12             11         0      Not Applicable
  04/19/2026 01 PM PDT            3.11             11         -      Not Applicable
  04/19/2026 02 PM PDT            3.11             11         0      Not Applicable
  04/19/2026 03 PM PDT            3.11             11         0      Not Applicable
  04/19/2026 04 PM PDT            3.10             11         -      Not Applicable
  04/19/2026 05 PM PDT            3.10             11         0      Not Applicable
  04/19/2026 06 PM PDT            3.10             11         0      Not Applicable
  04/19/2026 07 PM PDT            3.10             11         0      Not Applicable
  04/19/2026 08 PM PDT            3.10             11         0      Not Applicable
  04/19/2026 09 PM PDT            3.10             11         0      Not Applicable
  04/19/2026 10 PM PDT            3.10             11         0      Not Applicable
  04/19/2026 11 PM PDT            3.10             11         0      Not Applicable
  04/20/2026 12 AM PDT            3.10             11         0      Not Applicable
  04/20/2026 01 AM PDT            3.10             11         0      Not Applicable
  04/20/2026 02 AM PDT            3.10             11         0      Not Applicable
  04/20/2026 03 AM PDT            3.10             11         0      Not Applicable
  04/20/2026 04 AM PDT            3.10             11         0      Not Applicable
  04/20/2026 05 AM PDT            3.10             11         0      Not Applicable
  04/20/2026 06 AM PDT            3.10             11         0      Not Applicable
  04/20/2026 07 AM PDT            3.10             11         0      Not Applicable
  04/20/2026 08 AM PDT            3.10             11         0      Not Applicable
  04/20/2026 09 AM PDT            3.10             11         0      Not Applicable
  04/20/2026 10 AM PDT            3.10             11         0      Not Applicable
  04/20/2026 11 AM PDT            3.10             11         0      Not Applicable
  04/20/2026 12 PM PDT            3.10             11         0      Not Applicable
  04/20/2026 01 PM PDT            3.09             10         -      Not Applicable
  04/20/2026 02 PM PDT            3.09             10         0      Not Applicable
  04/20/2026 03 PM PDT            3.09             10         0      Not Applicable
  04/20/2026 04 PM PDT            3.09             10         0      Not Applicable
  04/20/2026 05 PM PDT            3.09             10         0      Not Applicable
  04/20/2026 06 PM PDT            3.09             10         0      Not Applicable
  04/20/2026 07 PM PDT            3.09             10         0      Not Applicable
  04/20/2026 08 PM PDT            3.09             10         0      Not Applicable
  04/20/2026 09 PM PDT            3.09             10         0      Not Applicable
  04/20/2026 10 PM PDT            3.10             11         +      Not Applicable
  04/20/2026 11 PM PDT            3.10             11         0      Not Applicable
  04/21/2026 12 AM PDT            3.10             11         0      Not Applicable
  04/21/2026 01 AM PDT            3.11             11         +      Not Applicable
  04/21/2026 02 AM PDT            3.12             11         +      Not Applicable
  04/21/2026 03 AM PDT            3.14             12         +      Not Applicable
  04/21/2026 04 AM PDT            3.15             12         +      Not Applicable
  04/21/2026 05 AM PDT            3.16             13         +      Not Applicable
  04/21/2026 06 AM PDT            3.16             13         0      Not Applicable
  04/21/2026 07 AM PDT            3.16             13         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/21/2026 08 AM PDT            3.16             13                Not Applicable
  04/21/2026 09 AM PDT            3.16             13         0      Not Applicable
  04/21/2026 10 AM PDT            3.16             13         0      Not Applicable
  04/21/2026 11 AM PDT            3.17             13         +      Not Applicable
  04/21/2026 12 PM PDT            3.20             14         +      Not Applicable
  04/21/2026 01 PM PDT            3.26             16         +      Not Applicable
  04/21/2026 02 PM PDT            3.37             21         +      Not Applicable
  04/21/2026 03 PM PDT            3.53             30         +      Not Applicable
  04/21/2026 04 PM PDT            3.70             40         +      Not Applicable
  04/21/2026 05 PM PDT            3.84             51         +      Not Applicable
  04/21/2026 06 PM PDT            3.95             60         +      Not Applicable
  04/21/2026 07 PM PDT            4.04             68         +      Not Applicable
  04/21/2026 08 PM PDT            4.16             80         +      Not Applicable
  04/21/2026 09 PM PDT            4.35            101         +      Not Applicable
  04/21/2026 10 PM PDT            4.67            144         +      Not Applicable
  04/21/2026 11 PM PDT            4.98            195         +      Not Applicable
  04/22/2026 12 AM PDT            5.33            262         +      Not Applicable
  04/22/2026 01 AM PDT            5.59            316         +      Not Applicable
  04/22/2026 02 AM PDT            5.75            353         +      Not Applicable
  04/22/2026 03 AM PDT            5.83            371         +      Not Applicable
  04/22/2026 04 AM PDT            5.87            381         +      Not Applicable
  04/22/2026 05 AM PDT            5.87            381         0      Not Applicable
  04/22/2026 06 AM PDT            5.86            379         -      Not Applicable
  04/22/2026 07 AM PDT            5.83            371         -      Not Applicable
  04/22/2026 08 AM PDT            5.78            360         -      Not Applicable
  04/22/2026 09 AM PDT            5.71            343         -      Not Applicable
  04/22/2026 10 AM PDT            5.62            323         -      Not Applicable
  04/22/2026 11 AM PDT            5.52            301         -      Not Applicable
  04/22/2026 12 PM PDT            5.41            278         -      Not Applicable
  04/22/2026 01 PM PDT            5.29            254         -      Not Applicable
  04/22/2026 02 PM PDT            5.18            232         -      Not Applicable
  04/22/2026 03 PM PDT            5.09            215         -      Not Applicable
  04/22/2026 04 PM PDT            5.00            198         -      Not Applicable
  04/22/2026 05 PM PDT            4.93            186         -      Not Applicable
  04/22/2026 06 PM PDT            4.87            175         -      Not Applicable
  04/22/2026 07 PM PDT            4.81            166         -      Not Applicable
  04/22/2026 08 PM PDT            4.75            156         -      Not Applicable
  04/22/2026 09 PM PDT            4.69            147         -      Not Applicable
  04/22/2026 10 PM PDT            4.64            139         -      Not Applicable
  04/22/2026 11 PM PDT            4.59            132         -      Not Applicable
  04/23/2026 12 AM PDT            4.54            125         -      Not Applicable
  04/23/2026 01 AM PDT            4.49            119         -      Not Applicable
  04/23/2026 02 AM PDT            4.44            112         -      Not Applicable
  04/23/2026 03 AM PDT            4.40            107         -      Not Applicable
  04/23/2026 04 AM PDT            4.36            103         -      Not Applicable
  04/23/2026 05 AM PDT            4.32             98         -      Not Applicable
  04/23/2026 06 AM PDT            4.29             95         -      Not Applicable
  04/23/2026 07 AM PDT            4.26             91         -      Not Applicable
  04/23/2026 08 AM PDT            4.24             89         -      Not Applicable
  04/23/2026 09 AM PDT            4.21             86         -      Not Applicable
  04/23/2026 10 AM PDT            4.19             83         -      Not Applicable
  04/23/2026 11 AM PDT            4.16             80         -      Not Applicable
  04/23/2026 12 PM PDT            4.14             78         -      Not Applicable
  04/23/2026 01 PM PDT            4.12             76         -      Not Applicable
  04/23/2026 02 PM PDT            4.10             74         -      Not Applicable
  04/23/2026 03 PM PDT            4.08             72         -      Not Applicable
  04/23/2026 04 PM PDT            4.07             71         -      Not Applicable
  04/23/2026 05 PM PDT            4.05             69         -      Not Applicable
  04/23/2026 06 PM PDT            4.03             67         -      Not Applicable
  04/23/2026 07 PM PDT            4.02             66         -      Not Applicable
  04/23/2026 08 PM PDT            4.01             66         -      Not Applicable
  04/23/2026 09 PM PDT            3.99             64         -      Not Applicable
  04/23/2026 10 PM PDT            3.98             63         -      Not Applicable
  04/23/2026 11 PM PDT            3.97             62         -      Not Applicable
  04/24/2026 12 AM PDT            3.96             61         -      Not Applicable
  04/24/2026 01 AM PDT            3.95             60         -      Not Applicable
  04/24/2026 02 AM PDT            3.94             59         -      Not Applicable
  04/24/2026 03 AM PDT            3.93             58         -      Not Applicable
  04/24/2026 04 AM PDT            3.92             58         -      Not Applicable
  04/24/2026 05 AM PDT            3.91             57         -      Not Applicable
  04/24/2026 06 AM PDT            3.90             56         -      Not Applicable
  04/24/2026 07 AM PDT            3.89             55         -      Not Applicable
  04/24/2026 08 AM PDT            3.89             55         0      Not Applicable
  04/24/2026 09 AM PDT            3.88             54         -      Not Applicable
  04/24/2026 10 AM PDT            3.87             53         -      Not Applicable
  04/24/2026 11 AM PDT            3.87             53         0      Not Applicable
  04/24/2026 12 PM PDT            3.86             53         -      Not Applicable
  04/24/2026 01 PM PDT            3.85             52         -      Not Applicable
  04/24/2026 02 PM PDT            3.85             52         0      Not Applicable
  04/24/2026 03 PM PDT            3.84             51         -      Not Applicable
  04/24/2026 04 PM PDT            3.83             50         -      Not Applicable
  04/24/2026 05 PM PDT            3.83             50         0      Not Applicable
  04/24/2026 06 PM PDT            3.82             49         -      Not Applicable
  04/24/2026 07 PM PDT            3.81             49         -      Not Applicable
  04/24/2026 08 PM PDT            3.81             49         0      Not Applicable
  04/24/2026 09 PM PDT            3.80             48         -      Not Applicable
  04/24/2026 10 PM PDT            3.80             48         0      Not Applicable
  04/24/2026 11 PM PDT            3.79             47         -      Not Applicable
  04/25/2026 12 AM PDT            3.79             47         0      Not Applicable
  04/25/2026 01 AM PDT            3.78             46         -      Not Applicable
  04/25/2026 02 AM PDT            3.78             46         0      Not Applicable
  04/25/2026 03 AM PDT            3.77             46         -      Not Applicable
  04/25/2026 04 AM PDT            3.77             46         0      Not Applicable
  04/25/2026 05 AM PDT            3.76             45         -      Not Applicable
  04/25/2026 06 AM PDT            3.76             45         0      Not Applicable
  04/25/2026 07 AM PDT            3.75             44         -      Not Applicable
  04/25/2026 08 AM PDT            3.75             44         0      Not Applicable
  04/25/2026 09 AM PDT            3.75             44         0      Not Applicable
  04/25/2026 10 AM PDT            3.74             43         -      Not Applicable
  04/25/2026 11 AM PDT            3.74             43         0      Not Applicable
  04/25/2026 12 PM PDT            3.73             43         -      Not Applicable
  04/25/2026 01 PM PDT            3.73             43         0      Not Applicable
  04/25/2026 02 PM PDT            3.72             42         -      Not Applicable
  04/25/2026 03 PM PDT            3.72             42         0      Not Applicable
  04/25/2026 04 PM PDT            3.71             41         -      Not Applicable
  04/25/2026 05 PM PDT            3.71             41         0      Not Applicable
  04/25/2026 06 PM PDT            3.71             41         0      Not Applicable
  04/25/2026 07 PM PDT            3.70             40         -      Not Applicable
  04/25/2026 08 PM PDT            3.70             40         0      Not Applicable
  04/25/2026 09 PM PDT            3.69             40         -      Not Applicable
  04/25/2026 10 PM PDT            3.69             40         0      Not Applicable
  04/25/2026 11 PM PDT            3.68             39         -      Not Applicable
  04/26/2026 12 AM PDT            3.68             39         0      Not Applicable
  04/26/2026 01 AM PDT            3.68             39         0      Not Applicable
  04/26/2026 02 AM PDT            3.67             38         -      Not Applicable
  04/26/2026 03 AM PDT            3.67             38         0      Not Applicable
  04/26/2026 04 AM PDT            3.66             38         -      Not Applicable
  04/26/2026 05 AM PDT            3.66             38         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.