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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: | Apr 14 2026 at 8:24 AM PDT | Next Issuance: | Apr 14 2026 at 3:00 PM 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: 04/14/2026 at 08:24 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 04/11/2026 at 09:00 PM PDT
# Maximum Observed Stage: 4.16 Feet
# Maximum Observed Flow: 580 cfs
#
# Earliest Date & Time of Maximum Forecast: 04/14/2026 at 09:00 AM PDT
# Maximum Forecast Stage: 1.62 Feet
# Maximum Forecast Flow: 18 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
04/09/2026 08 AM PDT 1.52 13 Normal
04/09/2026 09 AM PDT 1.52 13 0 Normal
04/09/2026 10 AM PDT 1.52 13 0 Normal
04/09/2026 11 AM PDT 1.52 13 0 Normal
04/09/2026 12 PM PDT 1.52 13 0 Normal
04/09/2026 01 PM PDT 1.52 13 0 Normal
04/09/2026 02 PM PDT 1.52 13 0 Normal
04/09/2026 03 PM PDT 1.52 13 0 Normal
04/09/2026 04 PM PDT 1.52 13 0 Normal
04/09/2026 05 PM PDT 1.52 13 0 Normal
04/09/2026 06 PM PDT 1.52 13 0 Normal
04/09/2026 07 PM PDT 1.52 13 0 Normal
04/09/2026 08 PM PDT 1.52 13 0 Normal
04/09/2026 09 PM PDT 1.51 12 - Normal
04/09/2026 10 PM PDT 1.51 12 0 Normal
04/09/2026 11 PM PDT 1.51 12 0 Normal
04/10/2026 12 AM PDT 1.51 12 0 Normal
04/10/2026 01 AM PDT 1.51 12 0 Normal
04/10/2026 02 AM PDT 1.51 12 0 Normal
04/10/2026 03 AM PDT 1.51 12 0 Normal
04/10/2026 04 AM PDT 1.51 12 0 Normal
04/10/2026 05 AM PDT 1.51 12 0 Normal
04/10/2026 06 AM PDT 1.51 12 0 Normal
04/10/2026 07 AM PDT 1.51 12 0 Normal
04/10/2026 08 AM PDT 1.51 12 0 Normal
04/10/2026 09 AM PDT 1.57 16 + Normal
04/10/2026 10 AM PDT 1.69 23 + Normal
04/10/2026 11 AM PDT 1.73 25 + Normal
04/10/2026 12 PM PDT 1.69 23 - Normal
04/10/2026 01 PM PDT 1.65 20 - Normal
04/10/2026 02 PM PDT 1.62 18 - Normal
04/10/2026 03 PM PDT 1.61 18 - Normal
04/10/2026 04 PM PDT 1.60 17 - Normal
04/10/2026 05 PM PDT 1.60 17 0 Normal
04/10/2026 06 PM PDT 1.59 17 - Normal
04/10/2026 07 PM PDT 1.58 16 - Normal
04/10/2026 08 PM PDT 1.58 16 0 Normal
04/10/2026 09 PM PDT 1.57 16 - Normal
04/10/2026 10 PM PDT 1.57 16 0 Normal
04/10/2026 11 PM PDT 1.56 15 - Normal
04/11/2026 12 AM PDT 1.56 15 0 Normal
04/11/2026 01 AM PDT 1.56 15 0 Normal
04/11/2026 02 AM PDT 1.63 19 + Normal
04/11/2026 03 AM PDT 1.84 33 + Normal
04/11/2026 04 AM PDT 2.24 70 + Normal
04/11/2026 05 AM PDT 2.07 52 - Normal
04/11/2026 06 AM PDT 1.89 37 - Normal
04/11/2026 07 AM PDT 1.81 31 - Normal
04/11/2026 08 AM PDT 1.77 28 - Normal
04/11/2026 09 AM PDT 1.75 27 - Normal
04/11/2026 10 AM PDT 1.73 25 - Normal
04/11/2026 11 AM PDT 1.71 24 - Normal
04/11/2026 12 PM PDT 1.69 23 - Normal
04/11/2026 01 PM PDT 1.68 22 - Normal
04/11/2026 02 PM PDT 1.68 22 0 Normal
04/11/2026 03 PM PDT 1.68 22 0 Normal
04/11/2026 04 PM PDT 1.72 25 + Normal
04/11/2026 05 PM PDT 1.69 23 - Normal
04/11/2026 06 PM PDT 1.74 26 + Normal
04/11/2026 07 PM PDT 2.21 67 + Normal
04/11/2026 08 PM PDT 3.79 443 + Normal
04/11/2026 09 PM PDT 4.16 580 + Normal
04/11/2026 10 PM PDT 3.17 252 - Normal
04/11/2026 11 PM PDT 2.81 165 - Normal
04/12/2026 12 AM PDT 2.70 141 - Normal
04/12/2026 01 AM PDT 2.57 116 - Normal
04/12/2026 02 AM PDT 2.46 98 - Normal
04/12/2026 03 AM PDT 2.47 99 + Normal
04/12/2026 04 AM PDT 2.44 95 - Normal
04/12/2026 05 AM PDT 2.37 86 - Normal
04/12/2026 06 AM PDT 2.30 77 - Normal
04/12/2026 07 AM PDT 2.24 70 - Normal
04/12/2026 08 AM PDT 2.19 64 - Normal
04/12/2026 09 AM PDT 2.13 58 - Normal
04/12/2026 10 AM PDT 2.09 54 - Normal
04/12/2026 11 AM PDT 2.04 49 - Normal
04/12/2026 12 PM PDT 2.02 47 - Normal
04/12/2026 01 PM PDT 2.02 47 0 Normal
04/12/2026 02 PM PDT 2.10 55 + Normal
04/12/2026 03 PM PDT 2.01 46 - Normal
04/12/2026 04 PM PDT 1.93 40 - Normal
04/12/2026 05 PM PDT 1.93 40 0 Normal
04/12/2026 06 PM PDT 1.90 37 - Normal
04/12/2026 07 PM PDT 1.87 35 - Normal
04/12/2026 08 PM PDT 1.83 32 - Normal
04/12/2026 09 PM PDT 1.80 30 - Normal
04/12/2026 10 PM PDT 1.79 29 - Normal
04/12/2026 11 PM PDT 1.78 29 - Normal
04/13/2026 12 AM PDT 1.77 28 - Normal
04/13/2026 01 AM PDT 1.76 27 - Normal
04/13/2026 02 AM PDT 1.75 27 - Normal
04/13/2026 03 AM PDT 1.74 26 - Normal
04/13/2026 04 AM PDT 1.73 25 - Normal
04/13/2026 05 AM PDT 1.72 25 - Normal
04/13/2026 06 AM PDT 1.71 24 - Normal
04/13/2026 07 AM PDT 1.71 24 0 Normal
04/13/2026 08 AM PDT 1.70 23 - Normal
04/13/2026 09 AM PDT 1.70 23 0 Normal
04/13/2026 10 AM PDT 1.69 23 - Normal
04/13/2026 11 AM PDT 1.69 23 0 Normal
04/13/2026 12 PM PDT 1.68 22 - Normal
04/13/2026 01 PM PDT 1.68 22 0 Normal
04/13/2026 02 PM PDT 1.67 21 - Normal
04/13/2026 03 PM PDT 1.67 21 0 Normal
04/13/2026 04 PM PDT 1.67 21 0 Normal
04/13/2026 05 PM PDT 1.66 21 - Normal
04/13/2026 06 PM PDT 1.66 21 0 Normal
04/13/2026 07 PM PDT 1.65 20 - Normal
04/13/2026 08 PM PDT 1.64 20 - Normal
04/13/2026 09 PM PDT 1.64 20 0 Normal
04/13/2026 10 PM PDT 1.63 19 - Normal
04/13/2026 11 PM PDT 1.63 19 0 Normal
04/14/2026 12 AM PDT 1.63 19 0 Normal
04/14/2026 01 AM PDT 1.62 18 - Normal
04/14/2026 02 AM PDT 1.62 18 0 Normal
04/14/2026 03 AM PDT 1.62 18 0 Normal
04/14/2026 04 AM PDT 1.62 18 0 Normal
04/14/2026 05 AM PDT 1.62 18 0 Normal
04/14/2026 06 AM PDT 1.62 18 0 Normal
04/14/2026 07 AM PDT 1.62 18 0 Normal
04/14/2026 08 AM PDT 1.62 18 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
04/14/2026 09 AM PDT 1.62 18 Normal
04/14/2026 10 AM PDT 1.62 18 0 Normal
04/14/2026 11 AM PDT 1.62 18 0 Normal
04/14/2026 12 PM PDT 1.62 18 0 Normal
04/14/2026 01 PM PDT 1.62 18 0 Normal
04/14/2026 02 PM PDT 1.62 18 0 Normal
04/14/2026 03 PM PDT 1.62 18 0 Normal
04/14/2026 04 PM PDT 1.62 18 0 Normal
04/14/2026 05 PM PDT 1.62 18 0 Normal
04/14/2026 06 PM PDT 1.62 18 0 Normal
04/14/2026 07 PM PDT 1.62 18 0 Normal
04/14/2026 08 PM PDT 1.61 18 - Normal
04/14/2026 09 PM PDT 1.61 18 0 Normal
04/14/2026 10 PM PDT 1.61 18 0 Normal
04/14/2026 11 PM PDT 1.61 18 0 Normal
04/15/2026 12 AM PDT 1.61 18 0 Normal
04/15/2026 01 AM PDT 1.61 18 0 Normal
04/15/2026 02 AM PDT 1.61 18 0 Normal
04/15/2026 03 AM PDT 1.61 18 0 Normal
04/15/2026 04 AM PDT 1.61 18 0 Normal
04/15/2026 05 AM PDT 1.61 18 0 Normal
04/15/2026 06 AM PDT 1.61 18 0 Normal
04/15/2026 07 AM PDT 1.61 18 0 Normal
04/15/2026 08 AM PDT 1.61 18 0 Normal
04/15/2026 09 AM PDT 1.61 18 0 Normal
04/15/2026 10 AM PDT 1.61 18 0 Normal
04/15/2026 11 AM PDT 1.61 18 0 Normal
04/15/2026 12 PM PDT 1.61 18 0 Normal
04/15/2026 01 PM PDT 1.61 18 0 Normal
04/15/2026 02 PM PDT 1.61 18 0 Normal
04/15/2026 03 PM PDT 1.61 18 0 Normal
04/15/2026 04 PM PDT 1.61 18 0 Normal
04/15/2026 05 PM PDT 1.61 18 0 Normal
04/15/2026 06 PM PDT 1.61 18 0 Normal
04/15/2026 07 PM PDT 1.61 18 0 Normal
04/15/2026 08 PM PDT 1.61 18 0 Normal
04/15/2026 09 PM PDT 1.61 18 0 Normal
04/15/2026 10 PM PDT 1.61 18 0 Normal
04/15/2026 11 PM PDT 1.61 18 0 Normal
04/16/2026 12 AM PDT 1.61 18 0 Normal
04/16/2026 01 AM PDT 1.61 18 0 Normal
04/16/2026 02 AM PDT 1.60 17 - Normal
04/16/2026 03 AM PDT 1.60 17 0 Normal
04/16/2026 04 AM PDT 1.60 17 0 Normal
04/16/2026 05 AM PDT 1.60 17 0 Normal
04/16/2026 06 AM PDT 1.60 17 0 Normal
04/16/2026 07 AM PDT 1.60 17 0 Normal
04/16/2026 08 AM PDT 1.60 17 0 Normal
04/16/2026 09 AM PDT 1.60 17 0 Normal
04/16/2026 10 AM PDT 1.60 17 0 Normal
04/16/2026 11 AM PDT 1.60 17 0 Normal
04/16/2026 12 PM PDT 1.60 17 0 Normal
04/16/2026 01 PM PDT 1.60 17 0 Normal
04/16/2026 02 PM PDT 1.60 17 0 Normal
04/16/2026 03 PM PDT 1.60 17 0 Normal
04/16/2026 04 PM PDT 1.60 17 0 Normal
04/16/2026 05 PM PDT 1.60 17 0 Normal
04/16/2026 06 PM PDT 1.59 17 - Normal
04/16/2026 07 PM PDT 1.59 17 0 Normal
04/16/2026 08 PM PDT 1.59 17 0 Normal
04/16/2026 09 PM PDT 1.59 17 0 Normal
04/16/2026 10 PM PDT 1.59 17 0 Normal
04/16/2026 11 PM PDT 1.59 17 0 Normal
04/17/2026 12 AM PDT 1.59 17 0 Normal
04/17/2026 01 AM PDT 1.59 17 0 Normal
04/17/2026 02 AM PDT 1.59 17 0 Normal
04/17/2026 03 AM PDT 1.59 17 0 Normal
04/17/2026 04 AM PDT 1.59 17 0 Normal
04/17/2026 05 AM PDT 1.59 17 0 Normal
04/17/2026 06 AM PDT 1.59 17 0 Normal
04/17/2026 07 AM PDT 1.59 17 0 Normal
04/17/2026 08 AM PDT 1.59 17 0 Normal
04/17/2026 09 AM PDT 1.59 17 0 Normal
04/17/2026 10 AM PDT 1.59 17 0 Normal
04/17/2026 11 AM PDT 1.59 17 0 Normal
04/17/2026 12 PM PDT 1.59 17 0 Normal
04/17/2026 01 PM PDT 1.59 17 0 Normal
04/17/2026 02 PM PDT 1.59 17 0 Normal
04/17/2026 03 PM PDT 1.59 17 0 Normal
04/17/2026 04 PM PDT 1.59 17 0 Normal
04/17/2026 05 PM PDT 1.59 17 0 Normal
04/17/2026 06 PM PDT 1.58 16 - Normal
04/17/2026 07 PM PDT 1.58 16 0 Normal
04/17/2026 08 PM PDT 1.58 16 0 Normal
04/17/2026 09 PM PDT 1.58 16 0 Normal
04/17/2026 10 PM PDT 1.58 16 0 Normal
04/17/2026 11 PM PDT 1.58 16 0 Normal
04/18/2026 12 AM PDT 1.58 16 0 Normal
04/18/2026 01 AM PDT 1.58 16 0 Normal
04/18/2026 02 AM PDT 1.58 16 0 Normal
04/18/2026 03 AM PDT 1.58 16 0 Normal
04/18/2026 04 AM PDT 1.58 16 0 Normal
04/18/2026 05 AM PDT 1.58 16 0 Normal
04/18/2026 06 AM PDT 1.58 16 0 Normal
04/18/2026 07 AM PDT 1.58 16 0 Normal
04/18/2026 08 AM PDT 1.58 16 0 Normal
04/18/2026 09 AM PDT 1.57 16 - Normal
04/18/2026 10 AM PDT 1.57 16 0 Normal
04/18/2026 11 AM PDT 1.57 16 0 Normal
04/18/2026 12 PM PDT 1.57 16 0 Normal
04/18/2026 01 PM PDT 1.57 16 0 Normal
04/18/2026 02 PM PDT 1.57 16 0 Normal
04/18/2026 03 PM PDT 1.57 16 0 Normal
04/18/2026 04 PM PDT 1.57 16 0 Normal
04/18/2026 05 PM PDT 1.57 16 0 Normal
04/18/2026 06 PM PDT 1.57 16 0 Normal
04/18/2026 07 PM PDT 1.57 16 0 Normal
04/18/2026 08 PM PDT 1.56 15 - Normal
04/18/2026 09 PM PDT 1.56 15 0 Normal
04/18/2026 10 PM PDT 1.56 15 0 Normal
04/18/2026 11 PM PDT 1.56 15 0 Normal
04/19/2026 12 AM PDT 1.56 15 0 Normal
04/19/2026 01 AM PDT 1.56 15 0 Normal
04/19/2026 02 AM PDT 1.56 15 0 Normal
04/19/2026 03 AM PDT 1.56 15 0 Normal
04/19/2026 04 AM PDT 1.56 15 0 Normal
04/19/2026 05 AM PDT 1.56 15 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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