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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 19 2026 at 7:19 AM PDT | Next Issuance: | Apr 20 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: 04/19/2026 at 07:21 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 04/16/2026 at 03:00 PM PDT
# Maximum Observed Stage: 5.61 Feet
# Maximum Observed Flow: 72 cfs
#
# Earliest Date & Time of Maximum Forecast: 04/21/2026 at 09:00 AM PDT
# Maximum Forecast Stage: 7.35 Feet
# Maximum Forecast Flow: 405 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
04/14/2026 07 AM PDT 5.44 54 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 5.41 51 + Normal
04/16/2026 08 AM PDT 5.41 51 0 Normal
04/16/2026 09 AM PDT 5.42 52 + Normal
04/16/2026 10 AM PDT 5.43 53 + Normal
04/16/2026 11 AM PDT 5.44 54 + Normal
04/16/2026 12 PM PDT 5.44 54 0 Normal
04/16/2026 01 PM PDT 5.45 55 + Normal
04/16/2026 02 PM PDT 5.57 68 + Normal
04/16/2026 03 PM PDT 5.61 72 + Normal
04/16/2026 04 PM PDT 5.57 68 - Normal
04/16/2026 05 PM PDT 5.54 64 - Normal
04/16/2026 06 PM PDT 5.49 59 - Normal
04/16/2026 07 PM PDT 5.50 60 + Normal
04/16/2026 08 PM PDT 5.52 62 + Normal
04/16/2026 09 PM PDT 5.51 61 - Normal
04/16/2026 10 PM PDT 5.50 60 - Normal
04/16/2026 11 PM PDT 5.49 59 - Normal
04/17/2026 12 AM PDT 5.48 58 - Normal
04/17/2026 01 AM PDT 5.48 58 0 Normal
04/17/2026 02 AM PDT 5.48 58 0 Normal
04/17/2026 03 AM PDT 5.48 58 0 Normal
04/17/2026 04 AM PDT 5.49 59 + Normal
04/17/2026 05 AM PDT 5.49 59 0 Normal
04/17/2026 06 AM PDT 5.49 59 0 Normal
04/17/2026 07 AM PDT 5.49 59 0 Normal
04/17/2026 08 AM PDT 5.51 61 + Normal
04/17/2026 09 AM PDT 5.51 61 0 Normal
04/17/2026 10 AM PDT 5.50 60 - Normal
04/17/2026 11 AM PDT 5.49 59 - Normal
04/17/2026 12 PM PDT 5.50 60 + Normal
04/17/2026 01 PM PDT 5.50 60 0 Normal
04/17/2026 02 PM PDT 5.49 59 - Normal
04/17/2026 03 PM PDT 5.49 59 0 Normal
04/17/2026 04 PM PDT 5.49 59 0 Normal
04/17/2026 05 PM PDT 5.48 58 - Normal
04/17/2026 06 PM PDT 5.48 58 0 Normal
04/17/2026 07 PM PDT 5.48 58 0 Normal
04/17/2026 08 PM PDT 5.48 58 0 Normal
04/17/2026 09 PM PDT 5.47 57 - Normal
04/17/2026 10 PM PDT 5.48 58 + Normal
04/17/2026 11 PM PDT 5.48 58 0 Normal
04/18/2026 12 AM PDT 5.48 58 0 Normal
04/18/2026 01 AM PDT 5.48 58 0 Normal
04/18/2026 02 AM PDT 5.48 58 0 Normal
04/18/2026 03 AM PDT 5.48 58 0 Normal
04/18/2026 04 AM PDT 5.48 58 0 Normal
04/18/2026 05 AM PDT 5.48 58 0 Normal
04/18/2026 06 AM PDT 5.48 58 0 Normal
04/18/2026 07 AM PDT 5.49 59 + Normal
04/18/2026 08 AM PDT 5.51 61 + Normal
04/18/2026 09 AM PDT 5.50 60 - Normal
04/18/2026 10 AM PDT 5.50 60 0 Normal
04/18/2026 11 AM PDT 5.50 60 0 Normal
04/18/2026 12 PM PDT 5.49 59 - Normal
04/18/2026 01 PM PDT 5.50 60 + Normal
04/18/2026 02 PM PDT 5.50 60 0 Normal
04/18/2026 03 PM PDT 5.50 60 0 Normal
04/18/2026 04 PM PDT 5.49 59 - Normal
04/18/2026 05 PM PDT 5.49 59 0 Normal
04/18/2026 06 PM PDT 5.50 60 + Normal
04/18/2026 07 PM PDT 5.49 59 - Normal
04/18/2026 08 PM PDT 5.49 59 0 Normal
04/18/2026 09 PM PDT 5.49 59 0 Normal
04/18/2026 10 PM PDT 5.49 59 0 Normal
04/18/2026 11 PM PDT 5.49 59 0 Normal
04/19/2026 12 AM PDT 5.49 59 0 Normal
04/19/2026 01 AM PDT 5.49 59 0 Normal
04/19/2026 02 AM PDT 5.49 59 0 Normal
04/19/2026 03 AM PDT 5.49 59 0 Normal
04/19/2026 04 AM PDT 5.49 59 0 Normal
04/19/2026 05 AM PDT 5.49 59 0 Normal
04/19/2026 06 AM PDT 5.49 59 0 Normal
04/19/2026 07 AM PDT 5.49 59 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
04/19/2026 08 AM PDT 5.49 59 Normal
04/19/2026 09 AM PDT 5.49 59 0 Normal
04/19/2026 10 AM PDT 5.49 59 0 Normal
04/19/2026 11 AM PDT 5.49 59 0 Normal
04/19/2026 12 PM PDT 5.49 59 0 Normal
04/19/2026 01 PM PDT 5.49 59 0 Normal
04/19/2026 02 PM PDT 5.49 59 0 Normal
04/19/2026 03 PM PDT 5.49 59 0 Normal
04/19/2026 04 PM PDT 5.49 59 0 Normal
04/19/2026 05 PM PDT 5.49 59 0 Normal
04/19/2026 06 PM PDT 5.49 59 0 Normal
04/19/2026 07 PM PDT 5.49 59 0 Normal
04/19/2026 08 PM PDT 5.49 59 0 Normal
04/19/2026 09 PM PDT 5.49 59 0 Normal
04/19/2026 10 PM PDT 5.49 59 0 Normal
04/19/2026 11 PM PDT 5.49 59 0 Normal
04/20/2026 12 AM PDT 5.49 59 0 Normal
04/20/2026 01 AM PDT 5.49 59 0 Normal
04/20/2026 02 AM PDT 5.49 59 0 Normal
04/20/2026 03 AM PDT 5.49 59 0 Normal
04/20/2026 04 AM PDT 5.49 59 0 Normal
04/20/2026 05 AM PDT 5.49 59 0 Normal
04/20/2026 06 AM PDT 5.49 59 0 Normal
04/20/2026 07 AM PDT 5.49 59 0 Normal
04/20/2026 08 AM PDT 5.49 59 0 Normal
04/20/2026 09 AM PDT 5.49 59 0 Normal
04/20/2026 10 AM PDT 5.51 61 + Normal
04/20/2026 11 AM PDT 5.53 63 + Normal
04/20/2026 12 PM PDT 5.55 65 + Normal
04/20/2026 01 PM PDT 5.57 68 + Normal
04/20/2026 02 PM PDT 5.58 69 + Normal
04/20/2026 03 PM PDT 5.58 69 0 Normal
04/20/2026 04 PM PDT 5.58 69 0 Normal
04/20/2026 05 PM PDT 5.60 71 + Normal
04/20/2026 06 PM PDT 5.65 77 + Normal
04/20/2026 07 PM PDT 5.73 86 + Normal
04/20/2026 08 PM PDT 5.80 95 + Normal
04/20/2026 09 PM PDT 5.90 109 + Normal
04/20/2026 10 PM PDT 6.08 134 + Normal
04/20/2026 11 PM PDT 6.33 175 + Normal
04/21/2026 12 AM PDT 6.58 222 + Normal
04/21/2026 01 AM PDT 6.80 269 + Normal
04/21/2026 02 AM PDT 6.99 313 + Normal
04/21/2026 03 AM PDT 7.12 345 + Normal
04/21/2026 04 AM PDT 7.18 360 + Normal
04/21/2026 05 AM PDT 7.20 365 + Normal
04/21/2026 06 AM PDT 7.23 373 + Normal
04/21/2026 07 AM PDT 7.28 386 + Normal
04/21/2026 08 AM PDT 7.34 402 + Normal
04/21/2026 09 AM PDT 7.35 405 + Normal
04/21/2026 10 AM PDT 7.28 386 - Normal
04/21/2026 11 AM PDT 7.17 358 - Normal
04/21/2026 12 PM PDT 7.05 328 - Normal
04/21/2026 01 PM PDT 6.92 296 - Normal
04/21/2026 02 PM PDT 6.83 276 - Normal
04/21/2026 03 PM PDT 6.80 269 - Normal
04/21/2026 04 PM PDT 6.81 271 + Normal
04/21/2026 05 PM PDT 6.86 283 + Normal
04/21/2026 06 PM PDT 6.91 294 + Normal
04/21/2026 07 PM PDT 6.95 304 + Normal
04/21/2026 08 PM PDT 6.97 308 + Normal
04/21/2026 09 PM PDT 6.93 299 - Normal
04/21/2026 10 PM PDT 6.82 273 - Normal
04/21/2026 11 PM PDT 6.68 243 - Normal
04/22/2026 12 AM PDT 6.52 210 - Normal
04/22/2026 01 AM PDT 6.37 182 - Normal
04/22/2026 02 AM PDT 6.26 163 - Normal
04/22/2026 03 AM PDT 6.17 148 - Normal
04/22/2026 04 AM PDT 6.10 138 - Normal
04/22/2026 05 AM PDT 6.03 127 - Normal
04/22/2026 06 AM PDT 5.97 118 - Normal
04/22/2026 07 AM PDT 5.93 113 - Normal
04/22/2026 08 AM PDT 5.89 107 - Normal
04/22/2026 09 AM PDT 5.87 104 - Normal
04/22/2026 10 AM PDT 5.83 99 - Normal
04/22/2026 11 AM PDT 5.78 93 - Normal
04/22/2026 12 PM PDT 5.73 86 - Normal
04/22/2026 01 PM PDT 5.70 83 - Normal
04/22/2026 02 PM PDT 5.67 79 - Normal
04/22/2026 03 PM PDT 5.65 77 - Normal
04/22/2026 04 PM PDT 5.62 73 - Normal
04/22/2026 05 PM PDT 5.59 70 - Normal
04/22/2026 06 PM PDT 5.57 68 - Normal
04/22/2026 07 PM PDT 5.54 64 - Normal
04/22/2026 08 PM PDT 5.53 63 - Normal
04/22/2026 09 PM PDT 5.52 62 - Normal
04/22/2026 10 PM PDT 5.51 61 - Normal
04/22/2026 11 PM PDT 5.51 61 0 Normal
04/23/2026 12 AM PDT 5.50 60 - Normal
04/23/2026 01 AM PDT 5.50 60 0 Normal
04/23/2026 02 AM PDT 5.49 59 - Normal
04/23/2026 03 AM PDT 5.49 59 0 Normal
04/23/2026 04 AM PDT 5.48 58 - Normal
04/23/2026 05 AM PDT 5.48 58 0 Normal
04/23/2026 06 AM PDT 5.48 58 0 Normal
04/23/2026 07 AM PDT 5.48 58 0 Normal
04/23/2026 08 AM PDT 5.48 58 0 Normal
04/23/2026 09 AM PDT 5.48 58 0 Normal
04/23/2026 10 AM PDT 5.48 58 0 Normal
04/23/2026 11 AM PDT 5.48 58 0 Normal
04/23/2026 12 PM PDT 5.48 58 0 Normal
04/23/2026 01 PM PDT 5.48 58 0 Normal
04/23/2026 02 PM PDT 5.48 58 0 Normal
04/23/2026 03 PM PDT 5.48 58 0 Normal
04/23/2026 04 PM PDT 5.48 58 0 Normal
04/23/2026 05 PM PDT 5.47 57 - Normal
04/23/2026 06 PM PDT 5.47 57 0 Normal
04/23/2026 07 PM PDT 5.47 57 0 Normal
04/23/2026 08 PM PDT 5.47 57 0 Normal
04/23/2026 09 PM PDT 5.47 57 0 Normal
04/23/2026 10 PM PDT 5.47 57 0 Normal
04/23/2026 11 PM PDT 5.47 57 0 Normal
04/24/2026 12 AM PDT 5.47 57 0 Normal
04/24/2026 01 AM PDT 5.47 57 0 Normal
04/24/2026 02 AM PDT 5.47 57 0 Normal
04/24/2026 03 AM PDT 5.47 57 0 Normal
04/24/2026 04 AM PDT 5.47 57 0 Normal
04/24/2026 05 AM PDT 5.47 57 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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