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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: | Oct 17 2026 at 7:12 AM PDT | Next Issuance: | Oct 18 2026 at 9:00 AM PDT
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| Action: 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: 10/17/2026 at 07:12 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 10/17/2026 at 07:00 AM PDT
# Maximum Observed Stage: 2.54 Feet
# Maximum Observed Flow: 2 cfs
#
# Earliest Date & Time of Maximum Forecast: 10/20/2026 at 04:00 PM PDT
# Maximum Forecast Stage: 2.88 Feet
# Maximum Forecast Flow: 8 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
10/12/2026 07 AM PDT 2.22 1 Normal
10/12/2026 08 AM PDT 2.22 1 0 Normal
10/12/2026 09 AM PDT 2.21 1 - Normal
10/12/2026 10 AM PDT 2.21 1 0 Normal
10/12/2026 11 AM PDT 2.20 1 - Normal
10/12/2026 12 PM PDT 2.19 1 - Normal
10/12/2026 01 PM PDT 2.19 1 0 Normal
10/12/2026 02 PM PDT 2.17 1 - Normal
10/12/2026 03 PM PDT 2.16 1 - Normal
10/12/2026 04 PM PDT 2.15 1 - Normal
10/12/2026 05 PM PDT 2.14 0 - Normal
10/12/2026 06 PM PDT 2.13 0 - Normal
10/12/2026 07 PM PDT 2.12 0 - Normal
10/12/2026 08 PM PDT 2.10 0 - Normal
10/12/2026 09 PM PDT 2.09 0 - Normal
10/12/2026 10 PM PDT 2.08 0 - Normal
10/12/2026 11 PM PDT 2.07 0 - Normal
10/13/2026 12 AM PDT 2.06 0 - Normal
10/13/2026 01 AM PDT 2.05 0 - Normal
10/13/2026 02 AM PDT 2.04 0 - Normal
10/13/2026 03 AM PDT 2.03 0 - Normal
10/13/2026 04 AM PDT 2.02 0 - Normal
10/13/2026 05 AM PDT 2.02 0 0 Normal
10/13/2026 06 AM PDT 2.01 0 - Normal
10/13/2026 07 AM PDT 2.01 0 0 Normal
10/13/2026 08 AM PDT 2.00 0 - Normal
10/13/2026 09 AM PDT 1.99 0 - Normal
10/13/2026 10 AM PDT 1.99 0 0 Normal
10/13/2026 11 AM PDT 1.98 0 - Normal
10/13/2026 12 PM PDT 1.97 0 - Normal
10/13/2026 01 PM PDT 1.96 0 - Normal
10/13/2026 02 PM PDT 1.96 0 0 Normal
10/13/2026 03 PM PDT 1.94 0 - Normal
10/13/2026 04 PM PDT 1.94 0 0 Normal
10/13/2026 05 PM PDT 1.92 0 - Normal
10/13/2026 06 PM PDT 1.92 0 0 Normal
10/13/2026 07 PM PDT 1.91 0 - Normal
10/13/2026 08 PM PDT 1.90 0 - Normal
10/13/2026 09 PM PDT 1.90 0 0 Normal
10/13/2026 10 PM PDT 1.97 0 + Normal
10/13/2026 11 PM PDT 1.88 0 - Normal
10/14/2026 12 AM PDT 1.88 0 0 Normal
10/14/2026 01 AM PDT 1.86 0 - Normal
10/14/2026 02 AM PDT 1.86 0 0 Normal
10/14/2026 03 AM PDT 1.86 0 0 Normal
10/14/2026 04 AM PDT 1.85 0 - Normal
10/14/2026 05 AM PDT 1.85 0 0 Normal
10/14/2026 06 AM PDT 1.85 0 0 Normal
10/14/2026 07 AM PDT 1.85 0 0 Normal
10/14/2026 08 AM PDT 1.84 0 - Normal
10/14/2026 09 AM PDT 1.84 0 0 Normal
10/14/2026 10 AM PDT 1.84 0 0 Normal
10/14/2026 11 AM PDT 1.84 0 0 Normal
10/14/2026 12 PM PDT 1.84 0 0 Normal
10/14/2026 01 PM PDT 1.84 0 0 Normal
10/14/2026 02 PM PDT 1.84 0 0 Normal
10/14/2026 03 PM PDT 1.85 0 + Normal
10/14/2026 04 PM PDT 1.85 0 0 Normal
10/14/2026 05 PM PDT 1.85 0 0 Normal
10/14/2026 06 PM PDT 1.86 0 + Normal
10/14/2026 07 PM PDT 1.86 0 0 Normal
10/14/2026 08 PM PDT 1.86 0 0 Normal
10/14/2026 09 PM PDT 1.88 0 + Normal
10/14/2026 10 PM PDT 1.88 0 0 Normal
10/14/2026 11 PM PDT 1.89 0 + Normal
10/15/2026 12 AM PDT 1.90 0 + Normal
10/15/2026 01 AM PDT 1.91 0 + Normal
10/15/2026 02 AM PDT 1.92 0 + Normal
10/15/2026 03 AM PDT 1.94 0 + Normal
10/15/2026 04 AM PDT 1.95 0 + Normal
10/15/2026 05 AM PDT 1.97 0 + Normal
10/15/2026 06 AM PDT 1.99 0 + Normal
10/15/2026 07 AM PDT 2.01 0 + Normal
10/15/2026 08 AM PDT 2.02 0 + Normal
10/15/2026 09 AM PDT 2.04 0 + Normal
10/15/2026 10 AM PDT 2.06 0 + Normal
10/15/2026 11 AM PDT 2.08 0 + Normal
10/15/2026 12 PM PDT 2.10 0 + Normal
10/15/2026 01 PM PDT 2.12 0 + Normal
10/15/2026 02 PM PDT 2.13 0 + Normal
10/15/2026 03 PM PDT 2.15 1 + Normal
10/15/2026 04 PM PDT 2.16 1 + Normal
10/15/2026 05 PM PDT 2.18 1 + Normal
10/15/2026 06 PM PDT 2.19 1 + Normal
10/15/2026 07 PM PDT 2.21 1 + Normal
10/15/2026 08 PM PDT 2.22 1 + Normal
10/15/2026 09 PM PDT 2.23 1 + Normal
10/15/2026 10 PM PDT 2.25 1 + Normal
10/15/2026 11 PM PDT 2.26 1 + Normal
10/16/2026 12 AM PDT 2.28 1 + Normal
10/16/2026 01 AM PDT 2.30 1 + Normal
10/16/2026 02 AM PDT 2.31 1 + Normal
10/16/2026 03 AM PDT 2.33 1 + Normal
10/16/2026 04 AM PDT 2.35 1 + Normal
10/16/2026 05 AM PDT 2.36 1 + Normal
10/16/2026 06 AM PDT 2.38 1 + Normal
10/16/2026 07 AM PDT 2.40 1 + Normal
10/16/2026 08 AM PDT 2.41 1 + Normal
10/16/2026 09 AM PDT 2.43 2 + Normal
10/16/2026 10 AM PDT 2.44 2 + Normal
10/16/2026 11 AM PDT 2.46 2 + Normal
10/16/2026 12 PM PDT 2.47 2 + Normal
10/16/2026 01 PM PDT 2.48 2 + Normal
10/16/2026 02 PM PDT 2.49 2 + Normal
10/16/2026 03 PM PDT 2.49 2 0 Normal
10/16/2026 04 PM PDT 2.49 2 0 Normal
10/16/2026 05 PM PDT 2.49 2 0 Normal
10/16/2026 06 PM PDT 2.49 2 0 Normal
10/16/2026 07 PM PDT 2.49 2 0 Normal
10/16/2026 08 PM PDT 2.49 2 0 Normal
10/16/2026 09 PM PDT 2.49 2 0 Normal
10/16/2026 10 PM PDT 2.49 2 0 Normal
10/16/2026 11 PM PDT 2.50 2 + Normal
10/17/2026 12 AM PDT 2.51 2 + Normal
10/17/2026 01 AM PDT 2.52 2 + Normal
10/17/2026 02 AM PDT 2.52 2 0 Normal
10/17/2026 03 AM PDT 2.53 2 + Normal
10/17/2026 04 AM PDT 2.53 2 0 Normal
10/17/2026 05 AM PDT 2.54 2 + Normal
10/17/2026 06 AM PDT 2.54 2 0 Normal
10/17/2026 07 AM PDT 2.54 2 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
10/17/2026 08 AM PDT 2.54 2 Normal
10/17/2026 09 AM PDT 2.54 2 0 Normal
10/17/2026 10 AM PDT 2.54 2 0 Normal
10/17/2026 11 AM PDT 2.54 2 0 Normal
10/17/2026 12 PM PDT 2.54 2 0 Normal
10/17/2026 01 PM PDT 2.54 2 0 Normal
10/17/2026 02 PM PDT 2.54 2 0 Normal
10/17/2026 03 PM PDT 2.54 2 0 Normal
10/17/2026 04 PM PDT 2.54 2 0 Normal
10/17/2026 05 PM PDT 2.54 2 0 Normal
10/17/2026 06 PM PDT 2.54 2 0 Normal
10/17/2026 07 PM PDT 2.54 2 0 Normal
10/17/2026 08 PM PDT 2.54 2 0 Normal
10/17/2026 09 PM PDT 2.54 2 0 Normal
10/17/2026 10 PM PDT 2.54 2 0 Normal
10/17/2026 11 PM PDT 2.54 2 0 Normal
10/18/2026 12 AM PDT 2.54 2 0 Normal
10/18/2026 01 AM PDT 2.54 2 0 Normal
10/18/2026 02 AM PDT 2.54 2 0 Normal
10/18/2026 03 AM PDT 2.54 2 0 Normal
10/18/2026 04 AM PDT 2.54 2 0 Normal
10/18/2026 05 AM PDT 2.54 2 0 Normal
10/18/2026 06 AM PDT 2.54 2 0 Normal
10/18/2026 07 AM PDT 2.54 2 0 Normal
10/18/2026 08 AM PDT 2.54 2 0 Normal
10/18/2026 09 AM PDT 2.54 2 0 Normal
10/18/2026 10 AM PDT 2.54 2 0 Normal
10/18/2026 11 AM PDT 2.54 2 0 Normal
10/18/2026 12 PM PDT 2.54 2 0 Normal
10/18/2026 01 PM PDT 2.54 2 0 Normal
10/18/2026 02 PM PDT 2.54 2 0 Normal
10/18/2026 03 PM PDT 2.54 2 0 Normal
10/18/2026 04 PM PDT 2.54 2 0 Normal
10/18/2026 05 PM PDT 2.54 2 0 Normal
10/18/2026 06 PM PDT 2.54 2 0 Normal
10/18/2026 07 PM PDT 2.54 2 0 Normal
10/18/2026 08 PM PDT 2.54 2 0 Normal
10/18/2026 09 PM PDT 2.54 2 0 Normal
10/18/2026 10 PM PDT 2.54 2 0 Normal
10/18/2026 11 PM PDT 2.54 2 0 Normal
10/19/2026 12 AM PDT 2.54 2 0 Normal
10/19/2026 01 AM PDT 2.54 2 0 Normal
10/19/2026 02 AM PDT 2.54 2 0 Normal
10/19/2026 03 AM PDT 2.54 2 0 Normal
10/19/2026 04 AM PDT 2.54 2 0 Normal
10/19/2026 05 AM PDT 2.54 2 0 Normal
10/19/2026 06 AM PDT 2.54 2 0 Normal
10/19/2026 07 AM PDT 2.54 2 0 Normal
10/19/2026 08 AM PDT 2.54 2 0 Normal
10/19/2026 09 AM PDT 2.53 2 - Normal
10/19/2026 10 AM PDT 2.53 2 0 Normal
10/19/2026 11 AM PDT 2.53 2 0 Normal
10/19/2026 12 PM PDT 2.53 2 0 Normal
10/19/2026 01 PM PDT 2.53 2 0 Normal
10/19/2026 02 PM PDT 2.53 2 0 Normal
10/19/2026 03 PM PDT 2.53 2 0 Normal
10/19/2026 04 PM PDT 2.53 2 0 Normal
10/19/2026 05 PM PDT 2.53 2 0 Normal
10/19/2026 06 PM PDT 2.53 2 0 Normal
10/19/2026 07 PM PDT 2.53 2 0 Normal
10/19/2026 08 PM PDT 2.53 2 0 Normal
10/19/2026 09 PM PDT 2.53 2 0 Normal
10/19/2026 10 PM PDT 2.53 2 0 Normal
10/19/2026 11 PM PDT 2.53 2 0 Normal
10/20/2026 12 AM PDT 2.53 2 0 Normal
10/20/2026 01 AM PDT 2.53 2 0 Normal
10/20/2026 02 AM PDT 2.53 2 0 Normal
10/20/2026 03 AM PDT 2.53 2 0 Normal
10/20/2026 04 AM PDT 2.53 2 0 Normal
10/20/2026 05 AM PDT 2.53 2 0 Normal
10/20/2026 06 AM PDT 2.53 2 0 Normal
10/20/2026 07 AM PDT 2.53 2 0 Normal
10/20/2026 08 AM PDT 2.53 2 0 Normal
10/20/2026 09 AM PDT 2.53 2 0 Normal
10/20/2026 10 AM PDT 2.53 2 0 Normal
10/20/2026 11 AM PDT 2.53 2 0 Normal
10/20/2026 12 PM PDT 2.64 3 + Normal
10/20/2026 01 PM PDT 2.84 5 + Normal
10/20/2026 02 PM PDT 2.86 7 + Normal
10/20/2026 03 PM PDT 2.87 7 + Normal
10/20/2026 04 PM PDT 2.88 8 + Normal
10/20/2026 05 PM PDT 2.88 8 0 Normal
10/20/2026 06 PM PDT 2.87 7 - Normal
10/20/2026 07 PM PDT 2.85 6 - Normal
10/20/2026 08 PM PDT 2.77 4 - Normal
10/20/2026 09 PM PDT 2.68 3 - Normal
10/20/2026 10 PM PDT 2.63 3 - Normal
10/20/2026 11 PM PDT 2.60 3 - Normal
10/21/2026 12 AM PDT 2.57 2 - Normal
10/21/2026 01 AM PDT 2.56 2 - Normal
10/21/2026 02 AM PDT 2.55 2 - Normal
10/21/2026 03 AM PDT 2.54 2 - Normal
10/21/2026 04 AM PDT 2.53 2 - Normal
10/21/2026 05 AM PDT 2.53 2 0 Normal
10/21/2026 06 AM PDT 2.53 2 0 Normal
10/21/2026 07 AM PDT 2.53 2 0 Normal
10/21/2026 08 AM PDT 2.53 2 0 Normal
10/21/2026 09 AM PDT 2.53 2 0 Normal
10/21/2026 10 AM PDT 2.53 2 0 Normal
10/21/2026 11 AM PDT 2.53 2 0 Normal
10/21/2026 12 PM PDT 2.57 2 + Normal
10/21/2026 01 PM PDT 2.66 3 + Normal
10/21/2026 02 PM PDT 2.74 4 + Normal
10/21/2026 03 PM PDT 2.77 4 + Normal
10/21/2026 04 PM PDT 2.78 4 + Normal
10/21/2026 05 PM PDT 2.79 4 + Normal
10/21/2026 06 PM PDT 2.77 4 - Normal
10/21/2026 07 PM PDT 2.69 3 - Normal
10/21/2026 08 PM PDT 2.62 3 - Normal
10/21/2026 09 PM PDT 2.58 2 - Normal
10/21/2026 10 PM PDT 2.56 2 - Normal
10/21/2026 11 PM PDT 2.55 2 - Normal
10/22/2026 12 AM PDT 2.54 2 - Normal
10/22/2026 01 AM PDT 2.54 2 0 Normal
10/22/2026 02 AM PDT 2.53 2 - Normal
10/22/2026 03 AM PDT 2.53 2 0 Normal
10/22/2026 04 AM PDT 2.53 2 0 Normal
10/22/2026 05 AM PDT 2.53 2 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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