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GUADALUPE RIVER - SAN JOSE AT ALMADEN EXPRESSWAY (GUDC1)
| Latitude: 37.28º N | Longitude: 121.88º W | Elevation: 150 Feet | | | |
| Location: Santa Clara County in California | Bulletin Group: Central Coast | River Group: South Bay |
| Issuance Time: | Dec 25 2025 at 2:02 PM PST | Next Issuance: | Dec 26 2025 at 9:00 AM PST
| |
| 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: 12/25/2025 at 02:03 PM PST
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 12/25/2025 at 05:00 AM PST
# Maximum Observed Stage: 7.75 Feet
# Maximum Observed Flow: 2711 cfs
#
# Earliest Date & Time of Maximum Forecast: 12/25/2025 at 09:00 PM PST
# Maximum Forecast Stage: 6.59 Feet
# Maximum Forecast Flow: 1804 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
12/20/2025 02 PM PST 1.49 13 Normal
12/20/2025 03 PM PST 1.50 13 + Normal
12/20/2025 04 PM PST 1.50 13 0 Normal
12/20/2025 05 PM PST 1.50 13 0 Normal
12/20/2025 06 PM PST 1.49 13 - Normal
12/20/2025 07 PM PST 1.48 12 - Normal
12/20/2025 08 PM PST 1.48 12 0 Normal
12/20/2025 09 PM PST 1.47 12 - Normal
12/20/2025 10 PM PST 1.47 12 0 Normal
12/20/2025 11 PM PST 1.46 12 - Normal
12/21/2025 12 AM PST 0.92 0 - Normal
12/21/2025 01 AM PST 1.46 12 + Normal
12/21/2025 02 AM PST 1.46 12 0 Normal
12/21/2025 03 AM PST 1.46 12 0 Normal
12/21/2025 04 AM PST 1.47 12 + Normal
12/21/2025 05 AM PST 1.47 12 0 Normal
12/21/2025 06 AM PST 1.47 12 0 Normal
12/21/2025 07 AM PST 1.47 12 0 Normal
12/21/2025 08 AM PST 1.47 12 0 Normal
12/21/2025 09 AM PST 1.47 12 0 Normal
12/21/2025 10 AM PST 1.46 12 - Normal
12/21/2025 11 AM PST 1.82 35 + Normal
12/21/2025 12 PM PST 1.47 12 - Normal
12/21/2025 01 PM PST 1.47 12 0 Normal
12/21/2025 02 PM PST 1.47 12 0 Normal
12/21/2025 03 PM PST 1.47 12 0 Normal
12/21/2025 04 PM PST 1.46 12 - Normal
12/21/2025 05 PM PST 1.46 12 0 Normal
12/21/2025 06 PM PST 1.47 12 + Normal
12/21/2025 07 PM PST 1.47 12 0 Normal
12/21/2025 08 PM PST 1.48 12 + Normal
12/21/2025 09 PM PST 1.48 12 0 Normal
12/21/2025 10 PM PST 1.52 15 + Normal
12/21/2025 11 PM PST 1.49 13 - Normal
12/22/2025 12 AM PST 1.49 13 0 Normal
12/22/2025 01 AM PST 1.50 13 + Normal
12/22/2025 02 AM PST 1.49 13 - Normal
12/22/2025 03 AM PST 1.50 13 + Normal
12/22/2025 04 AM PST 1.50 13 0 Normal
12/22/2025 05 AM PST 1.49 13 - Normal
12/22/2025 06 AM PST 1.51 14 + Normal
12/22/2025 07 AM PST 1.52 15 + Normal
12/22/2025 08 AM PST 1.52 15 0 Normal
12/22/2025 09 AM PST 1.53 15 + Normal
12/22/2025 10 AM PST 1.53 15 0 Normal
12/22/2025 11 AM PST 1.54 16 + Normal
12/22/2025 12 PM PST 1.53 15 - Normal
12/22/2025 01 PM PST 1.53 15 0 Normal
12/22/2025 02 PM PST 1.53 15 0 Normal
12/22/2025 03 PM PST 1.53 15 0 Normal
12/22/2025 04 PM PST 1.54 16 + Normal
12/22/2025 05 PM PST 1.53 15 - Normal
12/22/2025 06 PM PST 1.53 15 0 Normal
12/22/2025 07 PM PST 1.53 15 0 Normal
12/22/2025 08 PM PST 1.53 15 0 Normal
12/22/2025 09 PM PST 1.14 2 - Normal
12/22/2025 10 PM PST 1.52 15 + Normal
12/22/2025 11 PM PST 1.52 15 0 Normal
12/23/2025 12 AM PST 1.52 15 0 Normal
12/23/2025 01 AM PST 1.52 15 0 Normal
12/23/2025 02 AM PST 1.51 14 - Normal
12/23/2025 03 AM PST 1.51 14 0 Normal
12/23/2025 04 AM PST 1.50 13 - Normal
12/23/2025 05 AM PST 1.50 13 0 Normal
12/23/2025 06 AM PST 1.13 2 - Normal
12/23/2025 07 AM PST 1.50 13 + Normal
12/23/2025 08 AM PST 1.50 13 0 Normal
12/23/2025 09 AM PST 1.49 13 - Normal
12/23/2025 10 AM PST 1.49 13 0 Normal
12/23/2025 11 AM PST 1.13 2 - Normal
12/23/2025 12 PM PST 1.49 13 + Normal
12/23/2025 01 PM PST 1.49 13 0 Normal
12/23/2025 02 PM PST 1.51 14 + Normal
12/23/2025 03 PM PST 1.51 14 0 Normal
12/23/2025 04 PM PST 1.51 14 0 Normal
12/23/2025 05 PM PST 1.51 14 0 Normal
12/23/2025 06 PM PST 1.51 14 0 Normal
12/23/2025 07 PM PST 1.51 14 0 Normal
12/23/2025 08 PM PST 1.51 14 0 Normal
12/23/2025 09 PM PST 1.51 14 0 Normal
12/23/2025 10 PM PST 1.51 14 0 Normal
12/23/2025 11 PM PST 1.52 15 + Normal
12/24/2025 12 AM PST 1.56 17 + Normal
12/24/2025 01 AM PST 1.57 17 + Normal
12/24/2025 02 AM PST 1.92 43 + Normal
12/24/2025 03 AM PST 1.73 28 - Normal
12/24/2025 04 AM PST 2.35 88 + Normal
12/24/2025 05 AM PST 3.99 515 + Normal
12/24/2025 06 AM PST 3.53 359 - Normal
12/24/2025 07 AM PST 2.76 160 - Normal
12/24/2025 08 AM PST 2.40 95 - Normal
12/24/2025 09 AM PST 2.37 91 - Normal
12/24/2025 10 AM PST 1.72 27 - Normal
12/24/2025 11 AM PST 2.22 73 + Normal
12/24/2025 12 PM PST 2.14 64 - Normal
12/24/2025 01 PM PST 2.07 57 - Normal
12/24/2025 02 PM PST 1.89 40 - Normal
12/24/2025 03 PM PST 1.93 44 + Normal
12/24/2025 04 PM PST 1.89 40 - Normal
12/24/2025 05 PM PST 1.84 36 - Normal
12/24/2025 06 PM PST 1.79 32 - Normal
12/24/2025 07 PM PST 1.75 29 - Normal
12/24/2025 08 PM PST 1.94 45 + Normal
12/24/2025 09 PM PST 1.86 38 - Normal
12/24/2025 10 PM PST 1.82 35 - Normal
12/24/2025 11 PM PST 1.81 34 - Normal
12/25/2025 12 AM PST 2.22 73 + Normal
12/25/2025 01 AM PST 2.21 71 - Normal
12/25/2025 02 AM PST 2.05 55 - Normal
12/25/2025 03 AM PST 2.34 87 + Normal
12/25/2025 04 AM PST 3.36 308 + Normal
12/25/2025 05 AM PST 7.75 2711 + Normal
12/25/2025 06 AM PST 6.77 1929 - Normal
12/25/2025 07 AM PST 6.86 1993 + Normal
12/25/2025 08 AM PST 6.00 1429 - Normal
12/25/2025 09 AM PST 5.18 991 - Normal
12/25/2025 10 AM PST 4.76 808 - Normal
12/25/2025 11 AM PST 4.13 568 - Normal
12/25/2025 12 PM PST 3.73 423 - Normal
12/25/2025 01 PM PST 3.62 388 - Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
12/25/2025 02 PM PST 3.71 417 Normal
12/25/2025 03 PM PST 3.62 388 - Normal
12/25/2025 04 PM PST 3.56 368 - Normal
12/25/2025 05 PM PST 3.52 356 - Normal
12/25/2025 06 PM PST 3.56 368 + Normal
12/25/2025 07 PM PST 3.88 475 + Normal
12/25/2025 08 PM PST 4.46 691 + Normal
12/25/2025 09 PM PST 6.59 1804 + Normal
12/25/2025 10 PM PST 4.59 741 - Normal
12/25/2025 11 PM PST 4.32 639 - Normal
12/26/2025 12 AM PST 4.13 568 - Normal
12/26/2025 01 AM PST 4.08 549 - Normal
12/26/2025 02 AM PST 4.06 541 - Normal
12/26/2025 03 AM PST 4.03 529 - Normal
12/26/2025 04 AM PST 3.94 496 - Normal
12/26/2025 05 AM PST 3.83 457 - Normal
12/26/2025 06 AM PST 3.74 427 - Normal
12/26/2025 07 AM PST 3.66 401 - Normal
12/26/2025 08 AM PST 3.59 378 - Normal
12/26/2025 09 AM PST 3.52 356 - Normal
12/26/2025 10 AM PST 3.43 328 - Normal
12/26/2025 11 AM PST 3.35 305 - Normal
12/26/2025 12 PM PST 3.29 288 - Normal
12/26/2025 01 PM PST 3.28 285 - Normal
12/26/2025 02 PM PST 3.32 296 + Normal
12/26/2025 03 PM PST 3.38 313 + Normal
12/26/2025 04 PM PST 3.49 346 + Normal
12/26/2025 05 PM PST 3.59 378 + Normal
12/26/2025 06 PM PST 3.60 381 + Normal
12/26/2025 07 PM PST 3.51 352 - Normal
12/26/2025 08 PM PST 3.38 313 - Normal
12/26/2025 09 PM PST 3.28 285 - Normal
12/26/2025 10 PM PST 3.19 261 - Normal
12/26/2025 11 PM PST 3.12 243 - Normal
12/27/2025 12 AM PST 3.09 236 - Normal
12/27/2025 01 AM PST 3.07 231 - Normal
12/27/2025 02 AM PST 3.03 221 - Normal
12/27/2025 03 AM PST 2.98 210 - Normal
12/27/2025 04 AM PST 2.94 201 - Normal
12/27/2025 05 AM PST 2.89 189 - Normal
12/27/2025 06 AM PST 2.84 177 - Normal
12/27/2025 07 AM PST 2.78 164 - Normal
12/27/2025 08 AM PST 2.73 153 - Normal
12/27/2025 09 AM PST 2.69 145 - Normal
12/27/2025 10 AM PST 2.66 139 - Normal
12/27/2025 11 AM PST 2.62 132 - Normal
12/27/2025 12 PM PST 2.59 126 - Normal
12/27/2025 01 PM PST 2.56 121 - Normal
12/27/2025 02 PM PST 2.53 115 - Normal
12/27/2025 03 PM PST 2.51 112 - Normal
12/27/2025 04 PM PST 2.48 107 - Normal
12/27/2025 05 PM PST 2.46 103 - Normal
12/27/2025 06 PM PST 2.44 100 - Normal
12/27/2025 07 PM PST 2.42 97 - Normal
12/27/2025 08 PM PST 2.40 95 - Normal
12/27/2025 09 PM PST 2.39 93 - Normal
12/27/2025 10 PM PST 2.37 91 - Normal
12/27/2025 11 PM PST 2.35 88 - Normal
12/28/2025 12 AM PST 2.34 87 - Normal
12/28/2025 01 AM PST 2.33 86 - Normal
12/28/2025 02 AM PST 2.31 83 - Normal
12/28/2025 03 AM PST 2.30 82 - Normal
12/28/2025 04 AM PST 2.29 81 - Normal
12/28/2025 05 AM PST 2.28 80 - Normal
12/28/2025 06 AM PST 2.27 78 - Normal
12/28/2025 07 AM PST 2.27 78 0 Normal
12/28/2025 08 AM PST 2.26 77 - Normal
12/28/2025 09 AM PST 2.25 76 - Normal
12/28/2025 10 AM PST 2.25 76 0 Normal
12/28/2025 11 AM PST 2.24 75 - Normal
12/28/2025 12 PM PST 2.23 74 - Normal
12/28/2025 01 PM PST 2.23 74 0 Normal
12/28/2025 02 PM PST 2.23 74 0 Normal
12/28/2025 03 PM PST 2.22 73 - Normal
12/28/2025 04 PM PST 2.22 73 0 Normal
12/28/2025 05 PM PST 2.21 71 - Normal
12/28/2025 06 PM PST 2.21 71 0 Normal
12/28/2025 07 PM PST 2.21 71 0 Normal
12/28/2025 08 PM PST 2.21 71 0 Normal
12/28/2025 09 PM PST 2.20 70 - Normal
12/28/2025 10 PM PST 2.20 70 0 Normal
12/28/2025 11 PM PST 2.20 70 0 Normal
12/29/2025 12 AM PST 2.20 70 0 Normal
12/29/2025 01 AM PST 2.19 69 - Normal
12/29/2025 02 AM PST 2.19 69 0 Normal
12/29/2025 03 AM PST 2.19 69 0 Normal
12/29/2025 04 AM PST 2.19 69 0 Normal
12/29/2025 05 AM PST 2.19 69 0 Normal
12/29/2025 06 AM PST 2.19 69 0 Normal
12/29/2025 07 AM PST 2.19 69 0 Normal
12/29/2025 08 AM PST 2.19 69 0 Normal
12/29/2025 09 AM PST 2.18 68 - Normal
12/29/2025 10 AM PST 2.18 68 0 Normal
12/29/2025 11 AM PST 2.18 68 0 Normal
12/29/2025 12 PM PST 2.18 68 0 Normal
12/29/2025 01 PM PST 2.18 68 0 Normal
12/29/2025 02 PM PST 2.18 68 0 Normal
12/29/2025 03 PM PST 2.18 68 0 Normal
12/29/2025 04 PM PST 2.18 68 0 Normal
12/29/2025 05 PM PST 2.18 68 0 Normal
12/29/2025 06 PM PST 2.18 68 0 Normal
12/29/2025 07 PM PST 2.18 68 0 Normal
12/29/2025 08 PM PST 2.18 68 0 Normal
12/29/2025 09 PM PST 2.17 67 - Normal
12/29/2025 10 PM PST 2.17 67 0 Normal
12/29/2025 11 PM PST 2.17 67 0 Normal
12/30/2025 12 AM PST 2.17 67 0 Normal
12/30/2025 01 AM PST 2.17 67 0 Normal
12/30/2025 02 AM PST 2.17 67 0 Normal
12/30/2025 03 AM PST 2.17 67 0 Normal
12/30/2025 04 AM PST 2.17 67 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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