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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: | Mar 16 2026 at 2:23 PM PDT | Next Issuance: | Mar 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: 03/16/2026 at 02:23 PM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 03/11/2026 at 04:00 PM PDT
# Maximum Observed Stage: 1.69 Feet
# Maximum Observed Flow: 23 cfs
#
# Earliest Date & Time of Maximum Forecast: 03/16/2026 at 03:00 PM PDT
# Maximum Forecast Stage: 1.64 Feet
# Maximum Forecast Flow: 20 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
03/11/2026 02 PM PDT 1.68 22 Normal
03/11/2026 03 PM PDT 1.69 23 + Normal
03/11/2026 04 PM PDT 1.69 23 0 Normal
03/11/2026 05 PM PDT 1.68 22 - Normal
03/11/2026 06 PM PDT 1.68 22 0 Normal
03/11/2026 07 PM PDT 1.68 22 0 Normal
03/11/2026 08 PM PDT 1.68 22 0 Normal
03/11/2026 09 PM PDT 1.67 21 - Normal
03/11/2026 10 PM PDT 1.67 21 0 Normal
03/11/2026 11 PM PDT 1.66 21 - Normal
03/12/2026 12 AM PDT 1.66 21 0 Normal
03/12/2026 01 AM PDT 1.66 21 0 Normal
03/12/2026 02 AM PDT 1.66 21 0 Normal
03/12/2026 03 AM PDT 1.66 21 0 Normal
03/12/2026 04 AM PDT 1.66 21 0 Normal
03/12/2026 05 AM PDT 1.66 21 0 Normal
03/12/2026 06 AM PDT 1.66 21 0 Normal
03/12/2026 07 AM PDT 1.66 21 0 Normal
03/12/2026 08 AM PDT 1.65 20 - Normal
03/12/2026 09 AM PDT 1.64 20 - Normal
03/12/2026 10 AM PDT 1.64 20 0 Normal
03/12/2026 11 AM PDT 1.64 20 0 Normal
03/12/2026 12 PM PDT 1.67 21 + Normal
03/12/2026 01 PM PDT 1.66 21 - Normal
03/12/2026 02 PM PDT 1.66 21 0 Normal
03/12/2026 03 PM PDT 1.66 21 0 Normal
03/12/2026 04 PM PDT 1.67 21 + Normal
03/12/2026 05 PM PDT 1.67 21 0 Normal
03/12/2026 06 PM PDT 1.67 21 0 Normal
03/12/2026 07 PM PDT 1.67 21 0 Normal
03/12/2026 08 PM PDT 1.66 21 - Normal
03/12/2026 09 PM PDT 1.65 20 - Normal
03/12/2026 10 PM PDT 1.65 20 0 Normal
03/12/2026 11 PM PDT 1.64 20 - Normal
03/13/2026 12 AM PDT 1.64 20 0 Normal
03/13/2026 01 AM PDT 1.64 20 0 Normal
03/13/2026 02 AM PDT 1.64 20 0 Normal
03/13/2026 03 AM PDT 1.64 20 0 Normal
03/13/2026 04 AM PDT 1.64 20 0 Normal
03/13/2026 05 AM PDT 1.64 20 0 Normal
03/13/2026 06 AM PDT 1.64 20 0 Normal
03/13/2026 07 AM PDT 1.64 20 0 Normal
03/13/2026 08 AM PDT 1.64 20 0 Normal
03/13/2026 09 AM PDT 1.63 19 - Normal
03/13/2026 10 AM PDT 1.63 19 0 Normal
03/13/2026 11 AM PDT 1.64 20 + Normal
03/13/2026 12 PM PDT 1.64 20 0 Normal
03/13/2026 01 PM PDT 1.64 20 0 Normal
03/13/2026 02 PM PDT 1.65 20 + Normal
03/13/2026 03 PM PDT 1.65 20 0 Normal
03/13/2026 04 PM PDT 1.66 21 + Normal
03/13/2026 05 PM PDT 1.66 21 0 Normal
03/13/2026 06 PM PDT 1.66 21 0 Normal
03/13/2026 07 PM PDT 1.66 21 0 Normal
03/13/2026 08 PM PDT 1.65 20 - Normal
03/13/2026 09 PM PDT 1.65 20 0 Normal
03/13/2026 10 PM PDT 1.64 20 - Normal
03/13/2026 11 PM PDT 1.64 20 0 Normal
03/14/2026 12 AM PDT 1.64 20 0 Normal
03/14/2026 01 AM PDT 1.64 20 0 Normal
03/14/2026 02 AM PDT 1.64 20 0 Normal
03/14/2026 03 AM PDT 1.64 20 0 Normal
03/14/2026 04 AM PDT 1.64 20 0 Normal
03/14/2026 05 AM PDT 1.64 20 0 Normal
03/14/2026 06 AM PDT 1.64 20 0 Normal
03/14/2026 07 AM PDT 1.64 20 0 Normal
03/14/2026 08 AM PDT 1.64 20 0 Normal
03/14/2026 09 AM PDT 1.63 19 - Normal
03/14/2026 10 AM PDT 1.63 19 0 Normal
03/14/2026 11 AM PDT 1.63 19 0 Normal
03/14/2026 12 PM PDT 1.63 19 0 Normal
03/14/2026 01 PM PDT 1.63 19 0 Normal
03/14/2026 02 PM PDT 1.63 19 0 Normal
03/14/2026 03 PM PDT 1.64 20 + Normal
03/14/2026 04 PM PDT 1.64 20 0 Normal
03/14/2026 05 PM PDT 1.64 20 0 Normal
03/14/2026 06 PM PDT 1.64 20 0 Normal
03/14/2026 07 PM PDT 1.65 20 + Normal
03/14/2026 08 PM PDT 1.64 20 - Normal
03/14/2026 09 PM PDT 1.64 20 0 Normal
03/14/2026 10 PM PDT 1.63 19 - Normal
03/14/2026 11 PM PDT 1.63 19 0 Normal
03/15/2026 12 AM PDT 1.63 19 0 Normal
03/15/2026 01 AM PDT 1.63 19 0 Normal
03/15/2026 02 AM PDT 1.63 19 0 Normal
03/15/2026 03 AM PDT 1.63 19 0 Normal
03/15/2026 04 AM PDT 1.63 19 0 Normal
03/15/2026 05 AM PDT 1.62 18 - Normal
03/15/2026 06 AM PDT 1.63 19 + Normal
03/15/2026 07 AM PDT 1.62 18 - Normal
03/15/2026 08 AM PDT 1.63 19 + Normal
03/15/2026 09 AM PDT 1.63 19 0 Normal
03/15/2026 10 AM PDT 1.62 18 - Normal
03/15/2026 11 AM PDT 1.62 18 0 Normal
03/15/2026 12 PM PDT 1.63 19 + Normal
03/15/2026 01 PM PDT 1.64 20 + Normal
03/15/2026 02 PM PDT 1.65 20 + Normal
03/15/2026 03 PM PDT 1.65 20 0 Normal
03/15/2026 04 PM PDT 1.65 20 0 Normal
03/15/2026 05 PM PDT 1.66 21 + Normal
03/15/2026 06 PM PDT 1.65 20 - Normal
03/15/2026 07 PM PDT 1.67 21 + Normal
03/15/2026 08 PM PDT 1.66 21 - Normal
03/15/2026 09 PM PDT 1.65 20 - Normal
03/15/2026 10 PM PDT 1.64 20 - Normal
03/15/2026 11 PM PDT 1.64 20 0 Normal
03/16/2026 12 AM PDT 1.64 20 0 Normal
03/16/2026 01 AM PDT 1.64 20 0 Normal
03/16/2026 02 AM PDT 1.64 20 0 Normal
03/16/2026 03 AM PDT 1.65 20 + Normal
03/16/2026 04 AM PDT 1.64 20 - Normal
03/16/2026 05 AM PDT 1.64 20 0 Normal
03/16/2026 06 AM PDT 1.63 19 - Normal
03/16/2026 07 AM PDT 1.63 19 0 Normal
03/16/2026 08 AM PDT 1.63 19 0 Normal
03/16/2026 09 AM PDT 1.62 18 - Normal
03/16/2026 10 AM PDT 1.62 18 0 Normal
03/16/2026 11 AM PDT 1.63 19 + Normal
03/16/2026 12 PM PDT 1.64 20 + Normal
03/16/2026 01 PM PDT 1.64 20 0 Normal
03/16/2026 02 PM PDT 1.64 20 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
03/16/2026 03 PM PDT 1.64 20 Normal
03/16/2026 04 PM PDT 1.64 20 0 Normal
03/16/2026 05 PM PDT 1.64 20 0 Normal
03/16/2026 06 PM PDT 1.64 20 0 Normal
03/16/2026 07 PM PDT 1.64 20 0 Normal
03/16/2026 08 PM PDT 1.64 20 0 Normal
03/16/2026 09 PM PDT 1.64 20 0 Normal
03/16/2026 10 PM PDT 1.64 20 0 Normal
03/16/2026 11 PM PDT 1.64 20 0 Normal
03/17/2026 12 AM PDT 1.64 20 0 Normal
03/17/2026 01 AM PDT 1.64 20 0 Normal
03/17/2026 02 AM PDT 1.64 20 0 Normal
03/17/2026 03 AM PDT 1.64 20 0 Normal
03/17/2026 04 AM PDT 1.64 20 0 Normal
03/17/2026 05 AM PDT 1.64 20 0 Normal
03/17/2026 06 AM PDT 1.64 20 0 Normal
03/17/2026 07 AM PDT 1.64 20 0 Normal
03/17/2026 08 AM PDT 1.64 20 0 Normal
03/17/2026 09 AM PDT 1.64 20 0 Normal
03/17/2026 10 AM PDT 1.64 20 0 Normal
03/17/2026 11 AM PDT 1.64 20 0 Normal
03/17/2026 12 PM PDT 1.64 20 0 Normal
03/17/2026 01 PM PDT 1.64 20 0 Normal
03/17/2026 02 PM PDT 1.64 20 0 Normal
03/17/2026 03 PM PDT 1.64 20 0 Normal
03/17/2026 04 PM PDT 1.64 20 0 Normal
03/17/2026 05 PM PDT 1.64 20 0 Normal
03/17/2026 06 PM PDT 1.64 20 0 Normal
03/17/2026 07 PM PDT 1.64 20 0 Normal
03/17/2026 08 PM PDT 1.64 20 0 Normal
03/17/2026 09 PM PDT 1.64 20 0 Normal
03/17/2026 10 PM PDT 1.64 20 0 Normal
03/17/2026 11 PM PDT 1.64 20 0 Normal
03/18/2026 12 AM PDT 1.63 19 - Normal
03/18/2026 01 AM PDT 1.63 19 0 Normal
03/18/2026 02 AM PDT 1.63 19 0 Normal
03/18/2026 03 AM PDT 1.63 19 0 Normal
03/18/2026 04 AM PDT 1.63 19 0 Normal
03/18/2026 05 AM PDT 1.63 19 0 Normal
03/18/2026 06 AM PDT 1.63 19 0 Normal
03/18/2026 07 AM PDT 1.63 19 0 Normal
03/18/2026 08 AM PDT 1.63 19 0 Normal
03/18/2026 09 AM PDT 1.63 19 0 Normal
03/18/2026 10 AM PDT 1.63 19 0 Normal
03/18/2026 11 AM PDT 1.63 19 0 Normal
03/18/2026 12 PM PDT 1.63 19 0 Normal
03/18/2026 01 PM PDT 1.63 19 0 Normal
03/18/2026 02 PM PDT 1.63 19 0 Normal
03/18/2026 03 PM PDT 1.63 19 0 Normal
03/18/2026 04 PM PDT 1.63 19 0 Normal
03/18/2026 05 PM PDT 1.63 19 0 Normal
03/18/2026 06 PM PDT 1.63 19 0 Normal
03/18/2026 07 PM PDT 1.63 19 0 Normal
03/18/2026 08 PM PDT 1.63 19 0 Normal
03/18/2026 09 PM PDT 1.63 19 0 Normal
03/18/2026 10 PM PDT 1.63 19 0 Normal
03/18/2026 11 PM PDT 1.63 19 0 Normal
03/19/2026 12 AM PDT 1.63 19 0 Normal
03/19/2026 01 AM PDT 1.63 19 0 Normal
03/19/2026 02 AM PDT 1.63 19 0 Normal
03/19/2026 03 AM PDT 1.63 19 0 Normal
03/19/2026 04 AM PDT 1.63 19 0 Normal
03/19/2026 05 AM PDT 1.63 19 0 Normal
03/19/2026 06 AM PDT 1.63 19 0 Normal
03/19/2026 07 AM PDT 1.63 19 0 Normal
03/19/2026 08 AM PDT 1.63 19 0 Normal
03/19/2026 09 AM PDT 1.63 19 0 Normal
03/19/2026 10 AM PDT 1.63 19 0 Normal
03/19/2026 11 AM PDT 1.63 19 0 Normal
03/19/2026 12 PM PDT 1.63 19 0 Normal
03/19/2026 01 PM PDT 1.62 18 - Normal
03/19/2026 02 PM PDT 1.62 18 0 Normal
03/19/2026 03 PM PDT 1.62 18 0 Normal
03/19/2026 04 PM PDT 1.62 18 0 Normal
03/19/2026 05 PM PDT 1.62 18 0 Normal
03/19/2026 06 PM PDT 1.62 18 0 Normal
03/19/2026 07 PM PDT 1.62 18 0 Normal
03/19/2026 08 PM PDT 1.62 18 0 Normal
03/19/2026 09 PM PDT 1.62 18 0 Normal
03/19/2026 10 PM PDT 1.62 18 0 Normal
03/19/2026 11 PM PDT 1.62 18 0 Normal
03/20/2026 12 AM PDT 1.62 18 0 Normal
03/20/2026 01 AM PDT 1.62 18 0 Normal
03/20/2026 02 AM PDT 1.62 18 0 Normal
03/20/2026 03 AM PDT 1.62 18 0 Normal
03/20/2026 04 AM PDT 1.62 18 0 Normal
03/20/2026 05 AM PDT 1.62 18 0 Normal
03/20/2026 06 AM PDT 1.62 18 0 Normal
03/20/2026 07 AM PDT 1.62 18 0 Normal
03/20/2026 08 AM PDT 1.62 18 0 Normal
03/20/2026 09 AM PDT 1.62 18 0 Normal
03/20/2026 10 AM PDT 1.62 18 0 Normal
03/20/2026 11 AM PDT 1.62 18 0 Normal
03/20/2026 12 PM PDT 1.62 18 0 Normal
03/20/2026 01 PM PDT 1.62 18 0 Normal
03/20/2026 02 PM PDT 1.62 18 0 Normal
03/20/2026 03 PM PDT 1.62 18 0 Normal
03/20/2026 04 PM PDT 1.62 18 0 Normal
03/20/2026 05 PM PDT 1.62 18 0 Normal
03/20/2026 06 PM PDT 1.62 18 0 Normal
03/20/2026 07 PM PDT 1.62 18 0 Normal
03/20/2026 08 PM PDT 1.62 18 0 Normal
03/20/2026 09 PM PDT 1.62 18 0 Normal
03/20/2026 10 PM PDT 1.62 18 0 Normal
03/20/2026 11 PM PDT 1.62 18 0 Normal
03/21/2026 12 AM PDT 1.62 18 0 Normal
03/21/2026 01 AM PDT 1.62 18 0 Normal
03/21/2026 02 AM PDT 1.62 18 0 Normal
03/21/2026 03 AM PDT 1.62 18 0 Normal
03/21/2026 04 AM PDT 1.62 18 0 Normal
03/21/2026 05 AM PDT 1.62 18 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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