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GUADALUPE RIVER - SAN JOSE AT US HIGHWAY 101 (GSJC1)
| Latitude: 37.37º N | Longitude: 121.93º W | Elevation: 72 Feet | | Forecast Type: Unofficial Location |
| Location: Santa Clara County in California | Bulletin Group: Central Coast | River Group: South Bay |
| Issuance Time: | Apr 16 2026 at 7:27 AM PDT | Next Issuance: | Apr 17 2026 at 9:00 AM PDT
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| Action/Monitor: 17.0 Feet | Minor Flood: 18.5 Feet | Moderate Flood: 19.5 Feet | Major Flood: 21.0 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: Guadalupe River - San Jose at US Highway 101 (GSJC1)
#
# File Generation Time: 04/16/2026 at 07:29 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 04/11/2026 at 11:00 PM PDT
# Maximum Observed Stage: 8.46 Feet
# Maximum Observed Flow: 767 cfs
#
# Earliest Date & Time of Maximum Forecast: 04/20/2026 at 03:00 PM PDT
# Maximum Forecast Stage: 6.39 Feet
# Maximum Forecast Flow: 186 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
04/11/2026 07 AM PDT 6.34 177 Normal
04/11/2026 08 AM PDT 6.36 181 + Normal
04/11/2026 09 AM PDT 6.18 150 - Normal
04/11/2026 10 AM PDT 6.01 124 - Normal
04/11/2026 11 AM PDT 5.87 104 - Normal
04/11/2026 12 PM PDT 5.80 95 - Normal
04/11/2026 01 PM PDT 5.84 100 + Normal
04/11/2026 02 PM PDT 5.81 96 - Normal
04/11/2026 03 PM PDT 5.77 91 - Normal
04/11/2026 04 PM PDT 5.74 88 - Normal
04/11/2026 05 PM PDT 5.83 99 + Normal
04/11/2026 06 PM PDT 5.72 85 - Normal
04/11/2026 07 PM PDT 5.65 77 - Normal
04/11/2026 08 PM PDT 6.47 201 + Normal
04/11/2026 09 PM PDT 7.39 416 + Normal
04/11/2026 10 PM PDT 7.96 589 + Normal
04/11/2026 11 PM PDT 8.46 767 + Normal
04/12/2026 12 AM PDT 8.42 752 - Normal
04/12/2026 01 AM PDT 7.92 576 - Normal
04/12/2026 02 AM PDT 7.54 459 - Normal
04/12/2026 03 AM PDT 7.29 389 - Normal
04/12/2026 04 AM PDT 7.09 337 - Normal
04/12/2026 05 AM PDT 6.89 289 - Normal
04/12/2026 06 AM PDT 6.73 254 - Normal
04/12/2026 07 AM PDT 6.60 226 - Normal
04/12/2026 08 AM PDT 6.46 199 - Normal
04/12/2026 09 AM PDT 6.33 175 - Normal
04/12/2026 10 AM PDT 6.29 168 - Normal
04/12/2026 11 AM PDT 6.41 190 + Normal
04/12/2026 12 PM PDT 6.44 195 + Normal
04/12/2026 01 PM PDT 6.36 181 - Normal
04/12/2026 02 PM PDT 6.24 160 - Normal
04/12/2026 03 PM PDT 6.09 136 - Normal
04/12/2026 04 PM PDT 5.98 120 - Normal
04/12/2026 05 PM PDT 5.93 113 - Normal
04/12/2026 06 PM PDT 5.92 111 - Normal
04/12/2026 07 PM PDT 5.85 102 - Normal
04/12/2026 08 PM PDT 5.79 94 - Normal
04/12/2026 09 PM PDT 5.75 89 - Normal
04/12/2026 10 PM PDT 5.73 86 - Normal
04/12/2026 11 PM PDT 5.71 84 - Normal
04/13/2026 12 AM PDT 5.68 80 - Normal
04/13/2026 01 AM PDT 5.65 77 - Normal
04/13/2026 02 AM PDT 5.62 73 - Normal
04/13/2026 03 AM PDT 5.61 72 - Normal
04/13/2026 04 AM PDT 5.59 70 - Normal
04/13/2026 05 AM PDT 5.57 68 - Normal
04/13/2026 06 AM PDT 5.56 67 - Normal
04/13/2026 07 AM PDT 5.54 64 - Normal
04/13/2026 08 AM PDT 5.53 63 - Normal
04/13/2026 09 AM PDT 5.52 62 - Normal
04/13/2026 10 AM PDT 5.52 62 0 Normal
04/13/2026 11 AM PDT 5.52 62 0 Normal
04/13/2026 12 PM PDT 5.50 60 - Normal
04/13/2026 01 PM PDT 5.50 60 0 Normal
04/13/2026 02 PM PDT 5.50 60 0 Normal
04/13/2026 03 PM PDT 5.49 59 - Normal
04/13/2026 04 PM PDT 5.48 58 - Normal
04/13/2026 05 PM PDT 5.47 57 - Normal
04/13/2026 06 PM PDT 5.47 57 0 Normal
04/13/2026 07 PM PDT 5.46 56 - Normal
04/13/2026 08 PM PDT 5.46 56 0 Normal
04/13/2026 09 PM PDT 5.46 56 0 Normal
04/13/2026 10 PM PDT 5.45 55 - Normal
04/13/2026 11 PM PDT 5.45 55 0 Normal
04/14/2026 12 AM PDT 5.45 55 0 Normal
04/14/2026 01 AM PDT 5.45 55 0 Normal
04/14/2026 02 AM PDT 5.45 55 0 Normal
04/14/2026 03 AM PDT 5.44 54 - Normal
04/14/2026 04 AM PDT 5.44 54 0 Normal
04/14/2026 05 AM PDT 5.44 54 0 Normal
04/14/2026 06 AM PDT 5.44 54 0 Normal
04/14/2026 07 AM PDT 5.44 54 0 Normal
04/14/2026 08 AM PDT 5.44 54 0 Normal
04/14/2026 09 AM PDT 5.44 54 0 Normal
04/14/2026 10 AM PDT 5.46 56 + Normal
04/14/2026 11 AM PDT 5.45 55 - Normal
04/14/2026 12 PM PDT 5.43 53 - Normal
04/14/2026 01 PM PDT 5.43 53 0 Normal
04/14/2026 02 PM PDT 5.43 53 0 Normal
04/14/2026 03 PM PDT 5.43 53 0 Normal
04/14/2026 04 PM PDT 5.44 54 + Normal
04/14/2026 05 PM PDT 5.42 52 - Normal
04/14/2026 06 PM PDT 5.41 51 - Normal
04/14/2026 07 PM PDT 5.41 51 0 Normal
04/14/2026 08 PM PDT 5.41 51 0 Normal
04/14/2026 09 PM PDT 5.41 51 0 Normal
04/14/2026 10 PM PDT 5.41 51 0 Normal
04/14/2026 11 PM PDT 5.41 51 0 Normal
04/15/2026 12 AM PDT 5.41 51 0 Normal
04/15/2026 01 AM PDT 5.41 51 0 Normal
04/15/2026 02 AM PDT 5.41 51 0 Normal
04/15/2026 03 AM PDT 5.41 51 0 Normal
04/15/2026 04 AM PDT 5.41 51 0 Normal
04/15/2026 05 AM PDT 5.41 51 0 Normal
04/15/2026 06 AM PDT 5.42 52 + Normal
04/15/2026 07 AM PDT 5.41 51 - Normal
04/15/2026 08 AM PDT 5.42 52 + Normal
04/15/2026 09 AM PDT 5.42 52 0 Normal
04/15/2026 10 AM PDT 5.42 52 0 Normal
04/15/2026 11 AM PDT 5.42 52 0 Normal
04/15/2026 12 PM PDT 5.41 51 - Normal
04/15/2026 01 PM PDT 5.41 51 0 Normal
04/15/2026 02 PM PDT 5.41 51 0 Normal
04/15/2026 03 PM PDT 5.41 51 0 Normal
04/15/2026 04 PM PDT 5.41 51 0 Normal
04/15/2026 05 PM PDT 5.40 50 - Normal
04/15/2026 06 PM PDT 5.40 50 0 Normal
04/15/2026 07 PM PDT 5.41 51 + Normal
04/15/2026 08 PM PDT 5.40 50 - Normal
04/15/2026 09 PM PDT 5.40 50 0 Normal
04/15/2026 10 PM PDT 5.40 50 0 Normal
04/15/2026 11 PM PDT 5.40 50 0 Normal
04/16/2026 12 AM PDT 5.40 50 0 Normal
04/16/2026 01 AM PDT 5.40 50 0 Normal
04/16/2026 02 AM PDT 5.40 50 0 Normal
04/16/2026 03 AM PDT 5.40 50 0 Normal
04/16/2026 04 AM PDT 5.40 50 0 Normal
04/16/2026 05 AM PDT 5.40 50 0 Normal
04/16/2026 06 AM PDT 5.40 50 0 Normal
04/16/2026 07 AM PDT 5.40 50 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
04/16/2026 08 AM PDT 5.40 50 Normal
04/16/2026 09 AM PDT 5.41 51 + Normal
04/16/2026 10 AM PDT 5.41 51 0 Normal
04/16/2026 11 AM PDT 5.42 52 + Normal
04/16/2026 12 PM PDT 5.43 53 + Normal
04/16/2026 01 PM PDT 5.43 53 0 Normal
04/16/2026 02 PM PDT 5.43 53 0 Normal
04/16/2026 03 PM PDT 5.43 53 0 Normal
04/16/2026 04 PM PDT 5.43 53 0 Normal
04/16/2026 05 PM PDT 5.43 53 0 Normal
04/16/2026 06 PM PDT 5.43 53 0 Normal
04/16/2026 07 PM PDT 5.43 53 0 Normal
04/16/2026 08 PM PDT 5.43 53 0 Normal
04/16/2026 09 PM PDT 5.43 53 0 Normal
04/16/2026 10 PM PDT 5.43 53 0 Normal
04/16/2026 11 PM PDT 5.43 53 0 Normal
04/17/2026 12 AM PDT 5.43 53 0 Normal
04/17/2026 01 AM PDT 5.43 53 0 Normal
04/17/2026 02 AM PDT 5.43 53 0 Normal
04/17/2026 03 AM PDT 5.43 53 0 Normal
04/17/2026 04 AM PDT 5.43 53 0 Normal
04/17/2026 05 AM PDT 5.43 53 0 Normal
04/17/2026 06 AM PDT 5.43 53 0 Normal
04/17/2026 07 AM PDT 5.43 53 0 Normal
04/17/2026 08 AM PDT 5.43 53 0 Normal
04/17/2026 09 AM PDT 5.43 53 0 Normal
04/17/2026 10 AM PDT 5.43 53 0 Normal
04/17/2026 11 AM PDT 5.43 53 0 Normal
04/17/2026 12 PM PDT 5.43 53 0 Normal
04/17/2026 01 PM PDT 5.43 53 0 Normal
04/17/2026 02 PM PDT 5.43 53 0 Normal
04/17/2026 03 PM PDT 5.43 53 0 Normal
04/17/2026 04 PM PDT 5.43 53 0 Normal
04/17/2026 05 PM PDT 5.43 53 0 Normal
04/17/2026 06 PM PDT 5.43 53 0 Normal
04/17/2026 07 PM PDT 5.43 53 0 Normal
04/17/2026 08 PM PDT 5.43 53 0 Normal
04/17/2026 09 PM PDT 5.43 53 0 Normal
04/17/2026 10 PM PDT 5.43 53 0 Normal
04/17/2026 11 PM PDT 5.42 52 - Normal
04/18/2026 12 AM PDT 5.42 52 0 Normal
04/18/2026 01 AM PDT 5.42 52 0 Normal
04/18/2026 02 AM PDT 5.42 52 0 Normal
04/18/2026 03 AM PDT 5.42 52 0 Normal
04/18/2026 04 AM PDT 5.42 52 0 Normal
04/18/2026 05 AM PDT 5.42 52 0 Normal
04/18/2026 06 AM PDT 5.42 52 0 Normal
04/18/2026 07 AM PDT 5.42 52 0 Normal
04/18/2026 08 AM PDT 5.42 52 0 Normal
04/18/2026 09 AM PDT 5.42 52 0 Normal
04/18/2026 10 AM PDT 5.42 52 0 Normal
04/18/2026 11 AM PDT 5.42 52 0 Normal
04/18/2026 12 PM PDT 5.42 52 0 Normal
04/18/2026 01 PM PDT 5.42 52 0 Normal
04/18/2026 02 PM PDT 5.42 52 0 Normal
04/18/2026 03 PM PDT 5.42 52 0 Normal
04/18/2026 04 PM PDT 5.42 52 0 Normal
04/18/2026 05 PM PDT 5.42 52 0 Normal
04/18/2026 06 PM PDT 5.42 52 0 Normal
04/18/2026 07 PM PDT 5.42 52 0 Normal
04/18/2026 08 PM PDT 5.42 52 0 Normal
04/18/2026 09 PM PDT 5.42 52 0 Normal
04/18/2026 10 PM PDT 5.42 52 0 Normal
04/18/2026 11 PM PDT 5.42 52 0 Normal
04/19/2026 12 AM PDT 5.42 52 0 Normal
04/19/2026 01 AM PDT 5.42 52 0 Normal
04/19/2026 02 AM PDT 5.42 52 0 Normal
04/19/2026 03 AM PDT 5.42 52 0 Normal
04/19/2026 04 AM PDT 5.42 52 0 Normal
04/19/2026 05 AM PDT 5.42 52 0 Normal
04/19/2026 06 AM PDT 5.42 52 0 Normal
04/19/2026 07 AM PDT 5.42 52 0 Normal
04/19/2026 08 AM PDT 5.42 52 0 Normal
04/19/2026 09 AM PDT 5.42 52 0 Normal
04/19/2026 10 AM PDT 5.42 52 0 Normal
04/19/2026 11 AM PDT 5.42 52 0 Normal
04/19/2026 12 PM PDT 5.42 52 0 Normal
04/19/2026 01 PM PDT 5.42 52 0 Normal
04/19/2026 02 PM PDT 5.42 52 0 Normal
04/19/2026 03 PM PDT 5.42 52 0 Normal
04/19/2026 04 PM PDT 5.42 52 0 Normal
04/19/2026 05 PM PDT 5.42 52 0 Normal
04/19/2026 06 PM PDT 5.42 52 0 Normal
04/19/2026 07 PM PDT 5.42 52 0 Normal
04/19/2026 08 PM PDT 5.42 52 0 Normal
04/19/2026 09 PM PDT 5.42 52 0 Normal
04/19/2026 10 PM PDT 5.42 52 0 Normal
04/19/2026 11 PM PDT 5.42 52 0 Normal
04/20/2026 12 AM PDT 5.41 51 - Normal
04/20/2026 01 AM PDT 5.41 51 0 Normal
04/20/2026 02 AM PDT 5.41 51 0 Normal
04/20/2026 03 AM PDT 5.41 51 0 Normal
04/20/2026 04 AM PDT 5.41 51 0 Normal
04/20/2026 05 AM PDT 5.41 51 0 Normal
04/20/2026 06 AM PDT 5.41 51 0 Normal
04/20/2026 07 AM PDT 5.41 51 0 Normal
04/20/2026 08 AM PDT 5.42 52 + Normal
04/20/2026 09 AM PDT 5.50 60 + Normal
04/20/2026 10 AM PDT 5.68 80 + Normal
04/20/2026 11 AM PDT 5.91 110 + Normal
04/20/2026 12 PM PDT 6.11 139 + Normal
04/20/2026 01 PM PDT 6.26 163 + Normal
04/20/2026 02 PM PDT 6.36 181 + Normal
04/20/2026 03 PM PDT 6.39 186 + Normal
04/20/2026 04 PM PDT 6.38 184 - Normal
04/20/2026 05 PM PDT 6.34 177 - Normal
04/20/2026 06 PM PDT 6.29 168 - Normal
04/20/2026 07 PM PDT 6.25 162 - Normal
04/20/2026 08 PM PDT 6.21 155 - Normal
04/20/2026 09 PM PDT 6.18 150 - Normal
04/20/2026 10 PM PDT 6.13 142 - Normal
04/20/2026 11 PM PDT 6.05 130 - Normal
04/21/2026 12 AM PDT 5.98 120 - Normal
04/21/2026 01 AM PDT 5.92 111 - Normal
04/21/2026 02 AM PDT 5.88 106 - Normal
04/21/2026 03 AM PDT 5.88 106 0 Normal
04/21/2026 04 AM PDT 5.94 114 + Normal
04/21/2026 05 AM PDT 6.03 127 + Normal
#
# 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.
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