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GUADALUPE RIVER - SAN JOSE AT US HIGHWAY 101 (GSJC1)
| Latitude: 37.37º N | Longitude: 121.93º W | Elevation: 72 Feet | | Forecast Type: Unofficial Location |
| Location: Santa Clara County in California | Bulletin Group: Central Coast | River Group: South Bay |
| Issuance Time: | Feb 26 2026 at 1:37 PM PST | Next Issuance: | Feb 27 2026 at 9:00 AM PST
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| Action/Monitor: 17.0 Feet | Minor Flood: 18.5 Feet | Moderate Flood: 19.5 Feet | Major Flood: 21.0 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: Guadalupe River - San Jose at US Highway 101 (GSJC1)
#
# File Generation Time: 02/26/2026 at 01:39 PM PST
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 02/21/2026 at 01:00 PM PST
# Maximum Observed Stage: 7.06 Feet
# Maximum Observed Flow: 330 cfs
#
# Earliest Date & Time of Maximum Forecast: 02/26/2026 at 02:00 PM PST
# Maximum Forecast Stage: 5.71 Feet
# Maximum Forecast Flow: 84 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
02/21/2026 01 PM PST 7.06 330 Normal
02/21/2026 02 PM PST 7.05 328 - Normal
02/21/2026 03 PM PST 6.94 301 - Normal
02/21/2026 04 PM PST 6.82 273 - Normal
02/21/2026 05 PM PST 6.76 260 - Normal
02/21/2026 06 PM PST 6.74 256 - Normal
02/21/2026 07 PM PST 6.70 247 - Normal
02/21/2026 08 PM PST 6.67 241 - Normal
02/21/2026 09 PM PST 6.65 237 - Normal
02/21/2026 10 PM PST 6.63 232 - Normal
02/21/2026 11 PM PST 6.61 228 - Normal
02/22/2026 12 AM PST 6.60 226 - Normal
02/22/2026 01 AM PST 6.59 224 - Normal
02/22/2026 02 AM PST 6.58 222 - Normal
02/22/2026 03 AM PST 6.59 224 + Normal
02/22/2026 04 AM PST 6.59 224 0 Normal
02/22/2026 05 AM PST 6.58 222 - Normal
02/22/2026 06 AM PST 6.58 222 0 Normal
02/22/2026 07 AM PST 6.57 220 - Normal
02/22/2026 08 AM PST 6.57 220 0 Normal
02/22/2026 09 AM PST 6.57 220 0 Normal
02/22/2026 10 AM PST 6.59 224 + Normal
02/22/2026 11 AM PST 6.62 230 + Normal
02/22/2026 12 PM PST 6.60 226 - Normal
02/22/2026 01 PM PST 6.57 220 - Normal
02/22/2026 02 PM PST 6.57 220 0 Normal
02/22/2026 03 PM PST 6.56 218 - Normal
02/22/2026 04 PM PST 6.55 216 - Normal
02/22/2026 05 PM PST 6.54 214 - Normal
02/22/2026 06 PM PST 6.52 210 - Normal
02/22/2026 07 PM PST 6.50 206 - Normal
02/22/2026 08 PM PST 6.48 203 - Normal
02/22/2026 09 PM PST 6.47 201 - Normal
02/22/2026 10 PM PST 6.49 204 + Normal
02/22/2026 11 PM PST 6.47 201 - Normal
02/23/2026 12 AM PST 6.44 195 - Normal
02/23/2026 01 AM PST 6.44 195 0 Normal
02/23/2026 02 AM PST 6.42 191 - Normal
02/23/2026 03 AM PST 6.41 190 - Normal
02/23/2026 04 AM PST 6.40 188 - Normal
02/23/2026 05 AM PST 6.40 188 0 Normal
02/23/2026 06 AM PST 6.40 188 0 Normal
02/23/2026 07 AM PST 6.40 188 0 Normal
02/23/2026 08 AM PST 6.41 190 + Normal
02/23/2026 09 AM PST 6.39 186 - Normal
02/23/2026 10 AM PST 6.38 184 - Normal
02/23/2026 11 AM PST 6.37 182 - Normal
02/23/2026 12 PM PST 6.37 182 0 Normal
02/23/2026 01 PM PST 6.36 181 - Normal
02/23/2026 02 PM PST 6.32 174 - Normal
02/23/2026 03 PM PST 6.26 163 - Normal
02/23/2026 04 PM PST 6.22 157 - Normal
02/23/2026 05 PM PST 6.19 152 - Normal
02/23/2026 06 PM PST 6.16 147 - Normal
02/23/2026 07 PM PST 6.14 144 - Normal
02/23/2026 08 PM PST 6.13 142 - Normal
02/23/2026 09 PM PST 6.12 141 - Normal
02/23/2026 10 PM PST 6.14 144 + Normal
02/23/2026 11 PM PST 6.12 141 - Normal
02/24/2026 12 AM PST 6.10 138 - Normal
02/24/2026 01 AM PST 6.06 131 - Normal
02/24/2026 02 AM PST 6.00 123 - Normal
02/24/2026 03 AM PST 5.97 118 - Normal
02/24/2026 04 AM PST 5.95 115 - Normal
02/24/2026 05 AM PST 5.94 114 - Normal
02/24/2026 06 AM PST 5.93 113 - Normal
02/24/2026 07 AM PST 5.92 111 - Normal
02/24/2026 08 AM PST 5.92 111 0 Normal
02/24/2026 09 AM PST 5.91 110 - Normal
02/24/2026 10 AM PST 5.91 110 0 Normal
02/24/2026 11 AM PST 5.91 110 0 Normal
02/24/2026 12 PM PST 5.90 109 - Normal
02/24/2026 01 PM PST 5.90 109 0 Normal
02/24/2026 02 PM PST 5.90 109 0 Normal
02/24/2026 03 PM PST 5.90 109 0 Normal
02/24/2026 04 PM PST 5.90 109 0 Normal
02/24/2026 05 PM PST 5.89 107 - Normal
02/24/2026 06 PM PST 5.88 106 - Normal
02/24/2026 07 PM PST 5.87 104 - Normal
02/24/2026 08 PM PST 5.86 103 - Normal
02/24/2026 09 PM PST 5.85 102 - Normal
02/24/2026 10 PM PST 5.84 100 - Normal
02/24/2026 11 PM PST 5.83 99 - Normal
02/25/2026 12 AM PST 5.82 98 - Normal
02/25/2026 01 AM PST 5.81 96 - Normal
02/25/2026 02 AM PST 5.80 95 - Normal
02/25/2026 03 AM PST 5.80 95 0 Normal
02/25/2026 04 AM PST 5.79 94 - Normal
02/25/2026 05 AM PST 5.79 94 0 Normal
02/25/2026 06 AM PST 5.79 94 0 Normal
02/25/2026 07 AM PST 5.79 94 0 Normal
02/25/2026 08 AM PST 5.78 93 - Normal
02/25/2026 09 AM PST 5.78 93 0 Normal
02/25/2026 10 AM PST 5.78 93 0 Normal
02/25/2026 11 AM PST 5.78 93 0 Normal
02/25/2026 12 PM PST 5.78 93 0 Normal
02/25/2026 01 PM PST 5.78 93 0 Normal
02/25/2026 02 PM PST 5.80 95 + Normal
02/25/2026 03 PM PST 5.79 94 - Normal
02/25/2026 04 PM PST 5.77 91 - Normal
02/25/2026 05 PM PST 5.76 90 - Normal
02/25/2026 06 PM PST 5.76 90 0 Normal
02/25/2026 07 PM PST 5.76 90 0 Normal
02/25/2026 08 PM PST 5.75 89 - Normal
02/25/2026 09 PM PST 5.75 89 0 Normal
02/25/2026 10 PM PST 5.74 88 - Normal
02/25/2026 11 PM PST 5.74 88 0 Normal
02/26/2026 12 AM PST 5.74 88 0 Normal
02/26/2026 01 AM PST 5.73 86 - Normal
02/26/2026 02 AM PST 5.73 86 0 Normal
02/26/2026 03 AM PST 5.73 86 0 Normal
02/26/2026 04 AM PST 5.72 85 - Normal
02/26/2026 05 AM PST 5.72 85 0 Normal
02/26/2026 06 AM PST 5.72 85 0 Normal
02/26/2026 07 AM PST 5.72 85 0 Normal
02/26/2026 08 AM PST 5.72 85 0 Normal
02/26/2026 09 AM PST 5.72 85 0 Normal
02/26/2026 10 AM PST 5.72 85 0 Normal
02/26/2026 11 AM PST 5.72 85 0 Normal
02/26/2026 12 PM PST 5.72 85 0 Normal
02/26/2026 01 PM PST 5.72 85 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
02/26/2026 02 PM PST 5.71 84 Normal
02/26/2026 03 PM PST 5.71 84 0 Normal
02/26/2026 04 PM PST 5.70 83 - Normal
02/26/2026 05 PM PST 5.70 83 0 Normal
02/26/2026 06 PM PST 5.70 83 0 Normal
02/26/2026 07 PM PST 5.70 83 0 Normal
02/26/2026 08 PM PST 5.69 81 - Normal
02/26/2026 09 PM PST 5.69 81 0 Normal
02/26/2026 10 PM PST 5.69 81 0 Normal
02/26/2026 11 PM PST 5.68 80 - Normal
02/27/2026 12 AM PST 5.68 80 0 Normal
02/27/2026 01 AM PST 5.68 80 0 Normal
02/27/2026 02 AM PST 5.68 80 0 Normal
02/27/2026 03 AM PST 5.68 80 0 Normal
02/27/2026 04 AM PST 5.67 79 - Normal
02/27/2026 05 AM PST 5.67 79 0 Normal
02/27/2026 06 AM PST 5.67 79 0 Normal
02/27/2026 07 AM PST 5.67 79 0 Normal
02/27/2026 08 AM PST 5.67 79 0 Normal
02/27/2026 09 AM PST 5.66 78 - Normal
02/27/2026 10 AM PST 5.66 78 0 Normal
02/27/2026 11 AM PST 5.66 78 0 Normal
02/27/2026 12 PM PST 5.66 78 0 Normal
02/27/2026 01 PM PST 5.66 78 0 Normal
02/27/2026 02 PM PST 5.66 78 0 Normal
02/27/2026 03 PM PST 5.65 77 - Normal
02/27/2026 04 PM PST 5.65 77 0 Normal
02/27/2026 05 PM PST 5.65 77 0 Normal
02/27/2026 06 PM PST 5.65 77 0 Normal
02/27/2026 07 PM PST 5.65 77 0 Normal
02/27/2026 08 PM PST 5.64 76 - Normal
02/27/2026 09 PM PST 5.64 76 0 Normal
02/27/2026 10 PM PST 5.64 76 0 Normal
02/27/2026 11 PM PST 5.64 76 0 Normal
02/28/2026 12 AM PST 5.64 76 0 Normal
02/28/2026 01 AM PST 5.64 76 0 Normal
02/28/2026 02 AM PST 5.63 74 - Normal
02/28/2026 03 AM PST 5.63 74 0 Normal
02/28/2026 04 AM PST 5.63 74 0 Normal
02/28/2026 05 AM PST 5.63 74 0 Normal
02/28/2026 06 AM PST 5.63 74 0 Normal
02/28/2026 07 AM PST 5.63 74 0 Normal
02/28/2026 08 AM PST 5.63 74 0 Normal
02/28/2026 09 AM PST 5.62 73 - Normal
02/28/2026 10 AM PST 5.62 73 0 Normal
02/28/2026 11 AM PST 5.62 73 0 Normal
02/28/2026 12 PM PST 5.62 73 0 Normal
02/28/2026 01 PM PST 5.62 73 0 Normal
02/28/2026 02 PM PST 5.62 73 0 Normal
02/28/2026 03 PM PST 5.62 73 0 Normal
02/28/2026 04 PM PST 5.61 72 - Normal
02/28/2026 05 PM PST 5.61 72 0 Normal
02/28/2026 06 PM PST 5.61 72 0 Normal
02/28/2026 07 PM PST 5.61 72 0 Normal
02/28/2026 08 PM PST 5.61 72 0 Normal
02/28/2026 09 PM PST 5.61 72 0 Normal
02/28/2026 10 PM PST 5.61 72 0 Normal
02/28/2026 11 PM PST 5.60 71 - Normal
03/01/2026 12 AM PST 5.60 71 0 Normal
03/01/2026 01 AM PST 5.60 71 0 Normal
03/01/2026 02 AM PST 5.60 71 0 Normal
03/01/2026 03 AM PST 5.60 71 0 Normal
03/01/2026 04 AM PST 5.60 71 0 Normal
03/01/2026 05 AM PST 5.59 70 - Normal
03/01/2026 06 AM PST 5.59 70 0 Normal
03/01/2026 07 AM PST 5.59 70 0 Normal
03/01/2026 08 AM PST 5.59 70 0 Normal
03/01/2026 09 AM PST 5.59 70 0 Normal
03/01/2026 10 AM PST 5.59 70 0 Normal
03/01/2026 11 AM PST 5.59 70 0 Normal
03/01/2026 12 PM PST 5.59 70 0 Normal
03/01/2026 01 PM PST 5.58 69 - Normal
03/01/2026 02 PM PST 5.58 69 0 Normal
03/01/2026 03 PM PST 5.58 69 0 Normal
03/01/2026 04 PM PST 5.58 69 0 Normal
03/01/2026 05 PM PST 5.58 69 0 Normal
03/01/2026 06 PM PST 5.58 69 0 Normal
03/01/2026 07 PM PST 5.58 69 0 Normal
03/01/2026 08 PM PST 5.58 69 0 Normal
03/01/2026 09 PM PST 5.58 69 0 Normal
03/01/2026 10 PM PST 5.57 68 - Normal
03/01/2026 11 PM PST 5.57 68 0 Normal
03/02/2026 12 AM PST 5.57 68 0 Normal
03/02/2026 01 AM PST 5.57 68 0 Normal
03/02/2026 02 AM PST 5.57 68 0 Normal
03/02/2026 03 AM PST 5.57 68 0 Normal
03/02/2026 04 AM PST 5.57 68 0 Normal
03/02/2026 05 AM PST 5.57 68 0 Normal
03/02/2026 06 AM PST 5.56 67 - Normal
03/02/2026 07 AM PST 5.56 67 0 Normal
03/02/2026 08 AM PST 5.56 67 0 Normal
03/02/2026 09 AM PST 5.56 67 0 Normal
03/02/2026 10 AM PST 5.56 67 0 Normal
03/02/2026 11 AM PST 5.56 67 0 Normal
03/02/2026 12 PM PST 5.56 67 0 Normal
03/02/2026 01 PM PST 5.56 67 0 Normal
03/02/2026 02 PM PST 5.55 65 - Normal
03/02/2026 03 PM PST 5.55 65 0 Normal
03/02/2026 04 PM PST 5.55 65 0 Normal
03/02/2026 05 PM PST 5.55 65 0 Normal
03/02/2026 06 PM PST 5.55 65 0 Normal
03/02/2026 07 PM PST 5.55 65 0 Normal
03/02/2026 08 PM PST 5.55 65 0 Normal
03/02/2026 09 PM PST 5.55 65 0 Normal
03/02/2026 10 PM PST 5.55 65 0 Normal
03/02/2026 11 PM PST 5.54 64 - Normal
03/03/2026 12 AM PST 5.54 64 0 Normal
03/03/2026 01 AM PST 5.54 64 0 Normal
03/03/2026 02 AM PST 5.54 64 0 Normal
03/03/2026 03 AM PST 5.54 64 0 Normal
03/03/2026 04 AM PST 5.54 64 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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