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GUADALUPE RIVER - SAN JOSE AT ALMADEN EXPRESSWAY (GUDC1)
| Latitude: 37.28º N | Longitude: 121.88º W | Elevation: 150 Feet | | Forecast Type: Official Location |
| Location: Santa Clara County in California | Bulletin Group: Central Coast | River Group: South Bay |
| Issuance Time: | May 16 2026 at 9:10 AM PDT | Next Issuance: | May 17 2026 at 9:00 AM PDT
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| Action/Monitor: 9.0 Feet | Minor Flood: 10.5 Feet | Moderate Flood: 11.5 Feet | Major Flood: 15.0 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: Guadalupe River - San Jose at Almaden Exprwy (GUDC1)
#
# File Generation Time: 05/16/2026 at 09:10 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 05/11/2026 at 12:00 PM PDT
# Maximum Observed Stage: 1.37 Feet
# Maximum Observed Flow: 7 cfs
#
# Earliest Date & Time of Maximum Forecast: 05/16/2026 at 09:00 AM PDT
# Maximum Forecast Stage: 1.32 Feet
# Maximum Forecast Flow: 6 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
05/11/2026 09 AM PDT 1.36 7 Normal
05/11/2026 10 AM PDT 1.36 7 0 Normal
05/11/2026 11 AM PDT 1.37 7 + Normal
05/11/2026 12 PM PDT 1.37 7 0 Normal
05/11/2026 01 PM PDT 1.36 7 - Normal
05/11/2026 02 PM PDT 1.36 7 0 Normal
05/11/2026 03 PM PDT 1.36 7 0 Normal
05/11/2026 04 PM PDT 1.36 7 0 Normal
05/11/2026 05 PM PDT 1.36 7 0 Normal
05/11/2026 06 PM PDT 1.36 7 0 Normal
05/11/2026 07 PM PDT 1.36 7 0 Normal
05/11/2026 08 PM PDT 1.35 6 - Normal
05/11/2026 09 PM PDT 1.35 6 0 Normal
05/11/2026 10 PM PDT 1.35 6 0 Normal
05/11/2026 11 PM PDT 1.34 6 - Normal
05/12/2026 12 AM PDT 1.34 6 0 Normal
05/12/2026 01 AM PDT 1.34 6 0 Normal
05/12/2026 02 AM PDT 1.34 6 0 Normal
05/12/2026 03 AM PDT 1.33 6 - Normal
05/12/2026 04 AM PDT 1.33 6 0 Normal
05/12/2026 05 AM PDT 1.33 6 0 Normal
05/12/2026 06 AM PDT 1.34 6 + Normal
05/12/2026 07 AM PDT 1.34 6 0 Normal
05/12/2026 08 AM PDT 1.34 6 0 Normal
05/12/2026 09 AM PDT 1.34 6 0 Normal
05/12/2026 10 AM PDT 1.34 6 0 Normal
05/12/2026 11 AM PDT 1.34 6 0 Normal
05/12/2026 12 PM PDT 1.34 6 0 Normal
05/12/2026 01 PM PDT 1.34 6 0 Normal
05/12/2026 02 PM PDT 1.34 6 0 Normal
05/12/2026 03 PM PDT 1.33 6 - Normal
05/12/2026 04 PM PDT 1.34 6 + Normal
05/12/2026 05 PM PDT 1.33 6 - Normal
05/12/2026 06 PM PDT 1.33 6 0 Normal
05/12/2026 07 PM PDT 1.33 6 0 Normal
05/12/2026 08 PM PDT 1.33 6 0 Normal
05/12/2026 09 PM PDT 1.33 6 0 Normal
05/12/2026 10 PM PDT 1.33 6 0 Normal
05/12/2026 11 PM PDT 1.33 6 0 Normal
05/13/2026 12 AM PDT 1.33 6 0 Normal
05/13/2026 01 AM PDT 1.33 6 0 Normal
05/13/2026 02 AM PDT 1.33 6 0 Normal
05/13/2026 03 AM PDT 1.34 6 + Normal
05/13/2026 04 AM PDT 1.34 6 0 Normal
05/13/2026 05 AM PDT 1.34 6 0 Normal
05/13/2026 06 AM PDT 1.34 6 0 Normal
05/13/2026 07 AM PDT 1.34 6 0 Normal
05/13/2026 08 AM PDT 1.34 6 0 Normal
05/13/2026 09 AM PDT 1.33 6 - Normal
05/13/2026 10 AM PDT 1.33 6 0 Normal
05/13/2026 11 AM PDT 1.34 6 + Normal
05/13/2026 12 PM PDT 1.34 6 0 Normal
05/13/2026 01 PM PDT 1.34 6 0 Normal
05/13/2026 02 PM PDT 1.34 6 0 Normal
05/13/2026 03 PM PDT 1.34 6 0 Normal
05/13/2026 04 PM PDT 1.34 6 0 Normal
05/13/2026 05 PM PDT 1.34 6 0 Normal
05/13/2026 06 PM PDT 1.34 6 0 Normal
05/13/2026 07 PM PDT 1.34 6 0 Normal
05/13/2026 08 PM PDT 1.34 6 0 Normal
05/13/2026 09 PM PDT 1.34 6 0 Normal
05/13/2026 10 PM PDT 1.33 6 - Normal
05/13/2026 11 PM PDT 1.33 6 0 Normal
05/14/2026 12 AM PDT 1.33 6 0 Normal
05/14/2026 01 AM PDT 1.33 6 0 Normal
05/14/2026 02 AM PDT 1.33 6 0 Normal
05/14/2026 03 AM PDT 1.33 6 0 Normal
05/14/2026 04 AM PDT 1.33 6 0 Normal
05/14/2026 05 AM PDT 1.33 6 0 Normal
05/14/2026 06 AM PDT 1.33 6 0 Normal
05/14/2026 07 AM PDT 1.33 6 0 Normal
05/14/2026 08 AM PDT 1.33 6 0 Normal
05/14/2026 09 AM PDT 1.33 6 0 Normal
05/14/2026 10 AM PDT 1.34 6 + Normal
05/14/2026 11 AM PDT 1.34 6 0 Normal
05/14/2026 12 PM PDT 1.34 6 0 Normal
05/14/2026 01 PM PDT 1.34 6 0 Normal
05/14/2026 02 PM PDT 1.34 6 0 Normal
05/14/2026 03 PM PDT 1.34 6 0 Normal
05/14/2026 04 PM PDT 1.34 6 0 Normal
05/14/2026 05 PM PDT 1.34 6 0 Normal
05/14/2026 06 PM PDT 1.34 6 0 Normal
05/14/2026 07 PM PDT 1.34 6 0 Normal
05/14/2026 08 PM PDT 1.34 6 0 Normal
05/14/2026 09 PM PDT 1.34 6 0 Normal
05/14/2026 10 PM PDT 1.34 6 0 Normal
05/14/2026 11 PM PDT 1.34 6 0 Normal
05/15/2026 12 AM PDT 1.33 6 - Normal
05/15/2026 01 AM PDT 1.33 6 0 Normal
05/15/2026 02 AM PDT 1.33 6 0 Normal
05/15/2026 03 AM PDT 1.33 6 0 Normal
05/15/2026 04 AM PDT 1.33 6 0 Normal
05/15/2026 05 AM PDT 1.33 6 0 Normal
05/15/2026 06 AM PDT 1.33 6 0 Normal
05/15/2026 07 AM PDT 1.33 6 0 Normal
05/15/2026 08 AM PDT 1.33 6 0 Normal
05/15/2026 09 AM PDT 1.33 6 0 Normal
05/15/2026 10 AM PDT 1.33 6 0 Normal
05/15/2026 11 AM PDT 1.33 6 0 Normal
05/15/2026 12 PM PDT 1.33 6 0 Normal
05/15/2026 01 PM PDT 1.33 6 0 Normal
05/15/2026 02 PM PDT 1.33 6 0 Normal
05/15/2026 03 PM PDT 1.33 6 0 Normal
05/15/2026 04 PM PDT 1.33 6 0 Normal
05/15/2026 05 PM PDT 1.33 6 0 Normal
05/15/2026 06 PM PDT 1.33 6 0 Normal
05/15/2026 07 PM PDT 1.33 6 0 Normal
05/15/2026 08 PM PDT 1.33 6 0 Normal
05/15/2026 09 PM PDT 1.33 6 0 Normal
05/15/2026 10 PM PDT 1.33 6 0 Normal
05/15/2026 11 PM PDT 1.32 6 - Normal
05/16/2026 12 AM PDT 1.32 6 0 Normal
05/16/2026 01 AM PDT 1.32 6 0 Normal
05/16/2026 02 AM PDT 1.32 6 0 Normal
05/16/2026 03 AM PDT 1.32 6 0 Normal
05/16/2026 04 AM PDT 1.32 6 0 Normal
05/16/2026 05 AM PDT 1.32 6 0 Normal
05/16/2026 06 AM PDT 1.32 6 0 Normal
05/16/2026 07 AM PDT 1.32 6 0 Normal
05/16/2026 08 AM PDT 1.32 6 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
05/16/2026 09 AM PDT 1.32 6 Normal
05/16/2026 10 AM PDT 1.32 6 0 Normal
05/16/2026 11 AM PDT 1.32 6 0 Normal
05/16/2026 12 PM PDT 1.32 6 0 Normal
05/16/2026 01 PM PDT 1.32 6 0 Normal
05/16/2026 02 PM PDT 1.32 6 0 Normal
05/16/2026 03 PM PDT 1.31 5 - Normal
05/16/2026 04 PM PDT 1.31 5 0 Normal
05/16/2026 05 PM PDT 1.31 5 0 Normal
05/16/2026 06 PM PDT 1.31 5 0 Normal
05/16/2026 07 PM PDT 1.31 5 0 Normal
05/16/2026 08 PM PDT 1.31 5 0 Normal
05/16/2026 09 PM PDT 1.31 5 0 Normal
05/16/2026 10 PM PDT 1.31 5 0 Normal
05/16/2026 11 PM PDT 1.31 5 0 Normal
05/17/2026 12 AM PDT 1.31 5 0 Normal
05/17/2026 01 AM PDT 1.31 5 0 Normal
05/17/2026 02 AM PDT 1.31 5 0 Normal
05/17/2026 03 AM PDT 1.31 5 0 Normal
05/17/2026 04 AM PDT 1.31 5 0 Normal
05/17/2026 05 AM PDT 1.31 5 0 Normal
05/17/2026 06 AM PDT 1.31 5 0 Normal
05/17/2026 07 AM PDT 1.31 5 0 Normal
05/17/2026 08 AM PDT 1.31 5 0 Normal
05/17/2026 09 AM PDT 1.31 5 0 Normal
05/17/2026 10 AM PDT 1.31 5 0 Normal
05/17/2026 11 AM PDT 1.31 5 0 Normal
05/17/2026 12 PM PDT 1.31 5 0 Normal
05/17/2026 01 PM PDT 1.31 5 0 Normal
05/17/2026 02 PM PDT 1.31 5 0 Normal
05/17/2026 03 PM PDT 1.30 5 - Normal
05/17/2026 04 PM PDT 1.30 5 0 Normal
05/17/2026 05 PM PDT 1.30 5 0 Normal
05/17/2026 06 PM PDT 1.30 5 0 Normal
05/17/2026 07 PM PDT 1.30 5 0 Normal
05/17/2026 08 PM PDT 1.30 5 0 Normal
05/17/2026 09 PM PDT 1.30 5 0 Normal
05/17/2026 10 PM PDT 1.30 5 0 Normal
05/17/2026 11 PM PDT 1.30 5 0 Normal
05/18/2026 12 AM PDT 1.30 5 0 Normal
05/18/2026 01 AM PDT 1.30 5 0 Normal
05/18/2026 02 AM PDT 1.30 5 0 Normal
05/18/2026 03 AM PDT 1.30 5 0 Normal
05/18/2026 04 AM PDT 1.30 5 0 Normal
05/18/2026 05 AM PDT 1.30 5 0 Normal
05/18/2026 06 AM PDT 1.30 5 0 Normal
05/18/2026 07 AM PDT 1.30 5 0 Normal
05/18/2026 08 AM PDT 1.30 5 0 Normal
05/18/2026 09 AM PDT 1.30 5 0 Normal
05/18/2026 10 AM PDT 1.30 5 0 Normal
05/18/2026 11 AM PDT 1.30 5 0 Normal
05/18/2026 12 PM PDT 1.30 5 0 Normal
05/18/2026 01 PM PDT 1.30 5 0 Normal
05/18/2026 02 PM PDT 1.30 5 0 Normal
05/18/2026 03 PM PDT 1.30 5 0 Normal
05/18/2026 04 PM PDT 1.30 5 0 Normal
05/18/2026 05 PM PDT 1.29 5 - Normal
05/18/2026 06 PM PDT 1.29 5 0 Normal
05/18/2026 07 PM PDT 1.29 5 0 Normal
05/18/2026 08 PM PDT 1.29 5 0 Normal
05/18/2026 09 PM PDT 1.29 5 0 Normal
05/18/2026 10 PM PDT 1.29 5 0 Normal
05/18/2026 11 PM PDT 1.29 5 0 Normal
05/19/2026 12 AM PDT 1.29 5 0 Normal
05/19/2026 01 AM PDT 1.29 5 0 Normal
05/19/2026 02 AM PDT 1.29 5 0 Normal
05/19/2026 03 AM PDT 1.29 5 0 Normal
05/19/2026 04 AM PDT 1.29 5 0 Normal
05/19/2026 05 AM PDT 1.29 5 0 Normal
05/19/2026 06 AM PDT 1.29 5 0 Normal
05/19/2026 07 AM PDT 1.29 5 0 Normal
05/19/2026 08 AM PDT 1.29 5 0 Normal
05/19/2026 09 AM PDT 1.29 5 0 Normal
05/19/2026 10 AM PDT 1.29 5 0 Normal
05/19/2026 11 AM PDT 1.29 5 0 Normal
05/19/2026 12 PM PDT 1.29 5 0 Normal
05/19/2026 01 PM PDT 1.29 5 0 Normal
05/19/2026 02 PM PDT 1.29 5 0 Normal
05/19/2026 03 PM PDT 1.29 5 0 Normal
05/19/2026 04 PM PDT 1.29 5 0 Normal
05/19/2026 05 PM PDT 1.29 5 0 Normal
05/19/2026 06 PM PDT 1.28 4 - Normal
05/19/2026 07 PM PDT 1.28 4 0 Normal
05/19/2026 08 PM PDT 1.28 4 0 Normal
05/19/2026 09 PM PDT 1.28 4 0 Normal
05/19/2026 10 PM PDT 1.28 4 0 Normal
05/19/2026 11 PM PDT 1.28 4 0 Normal
05/20/2026 12 AM PDT 1.28 4 0 Normal
05/20/2026 01 AM PDT 1.28 4 0 Normal
05/20/2026 02 AM PDT 1.28 4 0 Normal
05/20/2026 03 AM PDT 1.28 4 0 Normal
05/20/2026 04 AM PDT 1.28 4 0 Normal
05/20/2026 05 AM PDT 1.28 4 0 Normal
05/20/2026 06 AM PDT 1.28 4 0 Normal
05/20/2026 07 AM PDT 1.28 4 0 Normal
05/20/2026 08 AM PDT 1.28 4 0 Normal
05/20/2026 09 AM PDT 1.28 4 0 Normal
05/20/2026 10 AM PDT 1.28 4 0 Normal
05/20/2026 11 AM PDT 1.28 4 0 Normal
05/20/2026 12 PM PDT 1.28 4 0 Normal
05/20/2026 01 PM PDT 1.28 4 0 Normal
05/20/2026 02 PM PDT 1.28 4 0 Normal
05/20/2026 03 PM PDT 1.28 4 0 Normal
05/20/2026 04 PM PDT 1.28 4 0 Normal
05/20/2026 05 PM PDT 1.28 4 0 Normal
05/20/2026 06 PM PDT 1.28 4 0 Normal
05/20/2026 07 PM PDT 1.27 4 - Normal
05/20/2026 08 PM PDT 1.27 4 0 Normal
05/20/2026 09 PM PDT 1.27 4 0 Normal
05/20/2026 10 PM PDT 1.27 4 0 Normal
05/20/2026 11 PM PDT 1.27 4 0 Normal
05/21/2026 12 AM PDT 1.27 4 0 Normal
05/21/2026 01 AM PDT 1.27 4 0 Normal
05/21/2026 02 AM PDT 1.27 4 0 Normal
05/21/2026 03 AM PDT 1.27 4 0 Normal
05/21/2026 04 AM PDT 1.27 4 0 Normal
05/21/2026 05 AM PDT 1.27 4 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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