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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 09 2026 at 1:02 PM PDT | Next Issuance: | Apr 10 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: 04/09/2026 at 01:04 PM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 04/07/2026 at 04:00 PM PDT
# Maximum Observed Stage: 5.42 Feet
# Maximum Observed Flow: 52 cfs
#
# Earliest Date & Time of Maximum Forecast: 04/12/2026 at 02:00 AM PDT
# Maximum Forecast Stage: 7.61 Feet
# Maximum Forecast Flow: 479 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
04/04/2026 01 PM PDT 5.40 50 Normal
04/04/2026 02 PM PDT 5.40 50 0 Normal
04/04/2026 03 PM PDT 5.40 50 0 Normal
04/04/2026 04 PM PDT 5.39 49 - Normal
04/04/2026 05 PM PDT 5.39 49 0 Normal
04/04/2026 06 PM PDT 5.39 49 0 Normal
04/04/2026 07 PM PDT 5.38 48 - Normal
04/04/2026 08 PM PDT 5.38 48 0 Normal
04/04/2026 09 PM PDT 5.38 48 0 Normal
04/04/2026 10 PM PDT 5.38 48 0 Normal
04/04/2026 11 PM PDT 5.39 49 + Normal
04/05/2026 12 AM PDT 5.39 49 0 Normal
04/05/2026 01 AM PDT 5.38 48 - Normal
04/05/2026 02 AM PDT 5.38 48 0 Normal
04/05/2026 03 AM PDT 5.38 48 0 Normal
04/05/2026 04 AM PDT 5.38 48 0 Normal
04/05/2026 05 AM PDT 5.38 48 0 Normal
04/05/2026 06 AM PDT 5.38 48 0 Normal
04/05/2026 07 AM PDT 5.38 48 0 Normal
04/05/2026 08 AM PDT 5.40 50 + Normal
04/05/2026 09 AM PDT 5.39 49 - Normal
04/05/2026 10 AM PDT 5.39 49 0 Normal
04/05/2026 11 AM PDT 5.39 49 0 Normal
04/05/2026 12 PM PDT 5.39 49 0 Normal
04/05/2026 01 PM PDT 5.39 49 0 Normal
04/05/2026 02 PM PDT 5.39 49 0 Normal
04/05/2026 03 PM PDT 5.39 49 0 Normal
04/05/2026 04 PM PDT 5.39 49 0 Normal
04/05/2026 05 PM PDT 5.39 49 0 Normal
04/05/2026 06 PM PDT 5.39 49 0 Normal
04/05/2026 07 PM PDT 5.38 48 - Normal
04/05/2026 08 PM PDT 5.38 48 0 Normal
04/05/2026 09 PM PDT 5.38 48 0 Normal
04/05/2026 10 PM PDT 5.38 48 0 Normal
04/05/2026 11 PM PDT 5.38 48 0 Normal
04/06/2026 12 AM PDT 5.38 48 0 Normal
04/06/2026 01 AM PDT 5.38 48 0 Normal
04/06/2026 02 AM PDT 5.38 48 0 Normal
04/06/2026 03 AM PDT 5.37 47 - Normal
04/06/2026 04 AM PDT 5.37 47 0 Normal
04/06/2026 05 AM PDT 5.37 47 0 Normal
04/06/2026 06 AM PDT 5.38 48 + Normal
04/06/2026 07 AM PDT 5.37 47 - Normal
04/06/2026 08 AM PDT 5.37 47 0 Normal
04/06/2026 09 AM PDT 5.38 48 + Normal
04/06/2026 10 AM PDT 5.38 48 0 Normal
04/06/2026 11 AM PDT 5.38 48 0 Normal
04/06/2026 12 PM PDT 5.39 49 + Normal
04/06/2026 01 PM PDT 5.39 49 0 Normal
04/06/2026 02 PM PDT 5.38 48 - Normal
04/06/2026 03 PM PDT 5.39 49 + Normal
04/06/2026 04 PM PDT 5.39 49 0 Normal
04/06/2026 05 PM PDT 5.38 48 - Normal
04/06/2026 06 PM PDT 5.37 47 - Normal
04/06/2026 07 PM PDT 5.37 47 0 Normal
04/06/2026 08 PM PDT 5.37 47 0 Normal
04/06/2026 09 PM PDT 5.37 47 0 Normal
04/06/2026 10 PM PDT 5.37 47 0 Normal
04/06/2026 11 PM PDT 5.37 47 0 Normal
04/07/2026 12 AM PDT 5.37 47 0 Normal
04/07/2026 01 AM PDT 5.38 48 + Normal
04/07/2026 02 AM PDT 5.37 47 - Normal
04/07/2026 03 AM PDT 5.37 47 0 Normal
04/07/2026 04 AM PDT 5.37 47 0 Normal
04/07/2026 05 AM PDT 5.37 47 0 Normal
04/07/2026 06 AM PDT 5.37 47 0 Normal
04/07/2026 07 AM PDT 5.37 47 0 Normal
04/07/2026 08 AM PDT 5.37 47 0 Normal
04/07/2026 09 AM PDT 5.37 47 0 Normal
04/07/2026 10 AM PDT 5.38 48 + Normal
04/07/2026 11 AM PDT 5.38 48 0 Normal
04/07/2026 12 PM PDT 5.38 48 0 Normal
04/07/2026 01 PM PDT 5.38 48 0 Normal
04/07/2026 02 PM PDT 5.39 49 + Normal
04/07/2026 03 PM PDT 5.40 50 + Normal
04/07/2026 04 PM PDT 5.42 52 + Normal
04/07/2026 05 PM PDT 5.40 50 - Normal
04/07/2026 06 PM PDT 5.39 49 - Normal
04/07/2026 07 PM PDT 5.39 49 0 Normal
04/07/2026 08 PM PDT 5.38 48 - Normal
04/07/2026 09 PM PDT 5.38 48 0 Normal
04/07/2026 10 PM PDT 5.38 48 0 Normal
04/07/2026 11 PM PDT 5.37 47 - Normal
04/08/2026 12 AM PDT 5.38 48 + Normal
04/08/2026 01 AM PDT 5.38 48 0 Normal
04/08/2026 02 AM PDT 5.37 47 - Normal
04/08/2026 03 AM PDT 5.38 48 + Normal
04/08/2026 04 AM PDT 5.38 48 0 Normal
04/08/2026 05 AM PDT 5.37 47 - Normal
04/08/2026 06 AM PDT 5.38 48 + Normal
04/08/2026 07 AM PDT 5.38 48 0 Normal
04/08/2026 08 AM PDT 5.38 48 0 Normal
04/08/2026 09 AM PDT 5.38 48 0 Normal
04/08/2026 10 AM PDT 5.38 48 0 Normal
04/08/2026 11 AM PDT 5.38 48 0 Normal
04/08/2026 12 PM PDT 5.38 48 0 Normal
04/08/2026 01 PM PDT 5.38 48 0 Normal
04/08/2026 02 PM PDT 5.38 48 0 Normal
04/08/2026 03 PM PDT 5.38 48 0 Normal
04/08/2026 04 PM PDT 5.38 48 0 Normal
04/08/2026 05 PM PDT 5.38 48 0 Normal
04/08/2026 06 PM PDT 5.38 48 0 Normal
04/08/2026 07 PM PDT 5.38 48 0 Normal
04/08/2026 08 PM PDT 5.38 48 0 Normal
04/08/2026 09 PM PDT 5.38 48 0 Normal
04/08/2026 10 PM PDT 5.37 47 - Normal
04/08/2026 11 PM PDT 5.38 48 + Normal
04/09/2026 12 AM PDT 5.37 47 - Normal
04/09/2026 01 AM PDT 5.38 48 + Normal
04/09/2026 02 AM PDT 5.37 47 - Normal
04/09/2026 03 AM PDT 5.38 48 + Normal
04/09/2026 04 AM PDT 5.37 47 - Normal
04/09/2026 05 AM PDT 5.38 48 + Normal
04/09/2026 06 AM PDT 5.37 47 - Normal
04/09/2026 07 AM PDT 5.37 47 0 Normal
04/09/2026 08 AM PDT 5.38 48 + Normal
04/09/2026 09 AM PDT 5.37 47 - Normal
04/09/2026 10 AM PDT 5.38 48 + Normal
04/09/2026 11 AM PDT 5.38 48 0 Normal
04/09/2026 12 PM PDT 5.38 48 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
04/09/2026 01 PM PDT 5.38 48 Normal
04/09/2026 02 PM PDT 5.38 48 0 Normal
04/09/2026 03 PM PDT 5.38 48 0 Normal
04/09/2026 04 PM PDT 5.38 48 0 Normal
04/09/2026 05 PM PDT 5.38 48 0 Normal
04/09/2026 06 PM PDT 5.38 48 0 Normal
04/09/2026 07 PM PDT 5.38 48 0 Normal
04/09/2026 08 PM PDT 5.38 48 0 Normal
04/09/2026 09 PM PDT 5.38 48 0 Normal
04/09/2026 10 PM PDT 5.38 48 0 Normal
04/09/2026 11 PM PDT 5.38 48 0 Normal
04/10/2026 12 AM PDT 5.38 48 0 Normal
04/10/2026 01 AM PDT 5.38 48 0 Normal
04/10/2026 02 AM PDT 5.38 48 0 Normal
04/10/2026 03 AM PDT 5.38 48 0 Normal
04/10/2026 04 AM PDT 5.38 48 0 Normal
04/10/2026 05 AM PDT 5.40 50 + Normal
04/10/2026 06 AM PDT 5.50 60 + Normal
04/10/2026 07 AM PDT 5.71 84 + Normal
04/10/2026 08 AM PDT 5.87 104 + Normal
04/10/2026 09 AM PDT 5.92 111 + Normal
04/10/2026 10 AM PDT 5.95 115 + Normal
04/10/2026 11 AM PDT 6.03 127 + Normal
04/10/2026 12 PM PDT 6.13 142 + Normal
04/10/2026 01 PM PDT 6.20 153 + Normal
04/10/2026 02 PM PDT 6.26 163 + Normal
04/10/2026 03 PM PDT 6.31 172 + Normal
04/10/2026 04 PM PDT 6.31 172 0 Normal
04/10/2026 05 PM PDT 6.28 167 - Normal
04/10/2026 06 PM PDT 6.18 150 - Normal
04/10/2026 07 PM PDT 6.02 126 - Normal
04/10/2026 08 PM PDT 5.89 107 - Normal
04/10/2026 09 PM PDT 5.84 100 - Normal
04/10/2026 10 PM PDT 5.84 100 0 Normal
04/10/2026 11 PM PDT 5.85 102 + Normal
04/11/2026 12 AM PDT 5.87 104 + Normal
04/11/2026 01 AM PDT 5.87 104 0 Normal
04/11/2026 02 AM PDT 5.84 100 - Normal
04/11/2026 03 AM PDT 5.80 95 - Normal
04/11/2026 04 AM PDT 5.77 91 - Normal
04/11/2026 05 AM PDT 5.76 90 - Normal
04/11/2026 06 AM PDT 5.78 93 + Normal
04/11/2026 07 AM PDT 5.80 95 + Normal
04/11/2026 08 AM PDT 5.85 102 + Normal
04/11/2026 09 AM PDT 5.92 111 + Normal
04/11/2026 10 AM PDT 5.99 121 + Normal
04/11/2026 11 AM PDT 6.05 130 + Normal
04/11/2026 12 PM PDT 6.07 133 + Normal
04/11/2026 01 PM PDT 6.05 130 - Normal
04/11/2026 02 PM PDT 6.03 127 - Normal
04/11/2026 03 PM PDT 6.03 127 0 Normal
04/11/2026 04 PM PDT 6.06 131 + Normal
04/11/2026 05 PM PDT 6.11 139 + Normal
04/11/2026 06 PM PDT 6.18 150 + Normal
04/11/2026 07 PM PDT 6.25 162 + Normal
04/11/2026 08 PM PDT 6.33 175 + Normal
04/11/2026 09 PM PDT 6.52 210 + Normal
04/11/2026 10 PM PDT 6.84 278 + Normal
04/11/2026 11 PM PDT 7.17 358 + Normal
04/12/2026 12 AM PDT 7.41 422 + Normal
04/12/2026 01 AM PDT 7.56 465 + Normal
04/12/2026 02 AM PDT 7.61 479 + Normal
04/12/2026 03 AM PDT 7.56 465 - Normal
04/12/2026 04 AM PDT 7.45 433 - Normal
04/12/2026 05 AM PDT 7.30 392 - Normal
04/12/2026 06 AM PDT 7.14 350 - Normal
04/12/2026 07 AM PDT 7.00 315 - Normal
04/12/2026 08 AM PDT 6.88 287 - Normal
04/12/2026 09 AM PDT 6.79 267 - Normal
04/12/2026 10 AM PDT 6.70 247 - Normal
04/12/2026 11 AM PDT 6.61 228 - Normal
04/12/2026 12 PM PDT 6.54 214 - Normal
04/12/2026 01 PM PDT 6.49 204 - Normal
04/12/2026 02 PM PDT 6.45 197 - Normal
04/12/2026 03 PM PDT 6.42 191 - Normal
04/12/2026 04 PM PDT 6.41 190 - Normal
04/12/2026 05 PM PDT 6.40 188 - Normal
04/12/2026 06 PM PDT 6.39 186 - Normal
04/12/2026 07 PM PDT 6.38 184 - Normal
04/12/2026 08 PM PDT 6.38 184 0 Normal
04/12/2026 09 PM PDT 6.34 177 - Normal
04/12/2026 10 PM PDT 6.26 163 - Normal
04/12/2026 11 PM PDT 6.14 144 - Normal
04/13/2026 12 AM PDT 6.01 124 - Normal
04/13/2026 01 AM PDT 5.89 107 - Normal
04/13/2026 02 AM PDT 5.80 95 - Normal
04/13/2026 03 AM PDT 5.73 86 - Normal
04/13/2026 04 AM PDT 5.66 78 - Normal
04/13/2026 05 AM PDT 5.59 70 - Normal
04/13/2026 06 AM PDT 5.53 63 - Normal
04/13/2026 07 AM PDT 5.48 58 - Normal
04/13/2026 08 AM PDT 5.45 55 - Normal
04/13/2026 09 AM PDT 5.43 53 - Normal
04/13/2026 10 AM PDT 5.42 52 - Normal
04/13/2026 11 AM PDT 5.41 51 - Normal
04/13/2026 12 PM PDT 5.40 50 - Normal
04/13/2026 01 PM PDT 5.39 49 - Normal
04/13/2026 02 PM PDT 5.39 49 0 Normal
04/13/2026 03 PM PDT 5.38 48 - Normal
04/13/2026 04 PM PDT 5.38 48 0 Normal
04/13/2026 05 PM PDT 5.38 48 0 Normal
04/13/2026 06 PM PDT 5.38 48 0 Normal
04/13/2026 07 PM PDT 5.37 47 - Normal
04/13/2026 08 PM PDT 5.37 47 0 Normal
04/13/2026 09 PM PDT 5.37 47 0 Normal
04/13/2026 10 PM PDT 5.37 47 0 Normal
04/13/2026 11 PM PDT 5.37 47 0 Normal
04/14/2026 12 AM PDT 5.37 47 0 Normal
04/14/2026 01 AM PDT 5.37 47 0 Normal
04/14/2026 02 AM PDT 5.37 47 0 Normal
04/14/2026 03 AM PDT 5.37 47 0 Normal
04/14/2026 04 AM PDT 5.37 47 0 Normal
04/14/2026 05 AM PDT 5.37 47 0 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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