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SAN LORENZO RIVER - BIG TREES (BTEC1)
| Latitude: 37.04º N | Longitude: 122.07º W | Elevation: 227 Feet | | Forecast Type: Official Location |
| Location: Santa Cruz County in California | Bulletin Group: Central Coast | River Group: Salinas/Pajaro |
| Issuance Time: | Apr 21 2026 at 1:50 PM PDT | Next Issuance: | Apr 22 2026 at 9:00 AM PDT
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| Action/Monitor: 14.0 Feet | Minor Flood: 16.5 Feet | Moderate Flood: 19.5 Feet | Major Flood: 21.76 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: San Lorenzo River - Big Trees (BTEC1)
#
# File Generation Time: 04/21/2026 at 01:51 PM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 04/21/2026 at 01:00 PM PDT
# Maximum Observed Stage: 5.68 Feet
# Maximum Observed Flow: 336 cfs
#
# Earliest Date & Time of Maximum Forecast: 04/21/2026 at 07:00 PM PDT
# Maximum Forecast Stage: 7.32 Feet
# Maximum Forecast Flow: 851 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
04/16/2026 01 PM PDT 4.08 73 Normal
04/16/2026 02 PM PDT 4.08 73 0 Normal
04/16/2026 03 PM PDT 4.07 72 - Normal
04/16/2026 04 PM PDT 4.07 72 0 Normal
04/16/2026 05 PM PDT 4.07 72 0 Normal
04/16/2026 06 PM PDT 4.06 71 - Normal
04/16/2026 07 PM PDT 4.06 71 0 Normal
04/16/2026 08 PM PDT 4.06 71 0 Normal
04/16/2026 09 PM PDT 4.06 71 0 Normal
04/16/2026 10 PM PDT 4.06 71 0 Normal
04/16/2026 11 PM PDT 4.06 71 0 Normal
04/17/2026 12 AM PDT 4.05 70 - Normal
04/17/2026 01 AM PDT 4.05 70 0 Normal
04/17/2026 02 AM PDT 4.05 70 0 Normal
04/17/2026 03 AM PDT 4.05 70 0 Normal
04/17/2026 04 AM PDT 4.05 70 0 Normal
04/17/2026 05 AM PDT 4.05 70 0 Normal
04/17/2026 06 AM PDT 4.04 69 - Normal
04/17/2026 07 AM PDT 4.04 69 0 Normal
04/17/2026 08 AM PDT 4.04 69 0 Normal
04/17/2026 09 AM PDT 4.04 69 0 Normal
04/17/2026 10 AM PDT 4.04 69 0 Normal
04/17/2026 11 AM PDT 4.04 69 0 Normal
04/17/2026 12 PM PDT 4.04 69 0 Normal
04/17/2026 01 PM PDT 4.04 69 0 Normal
04/17/2026 02 PM PDT 4.03 69 - Normal
04/17/2026 03 PM PDT 4.03 69 0 Normal
04/17/2026 04 PM PDT 4.03 69 0 Normal
04/17/2026 05 PM PDT 4.03 69 0 Normal
04/17/2026 06 PM PDT 4.03 69 0 Normal
04/17/2026 07 PM PDT 4.02 68 - Normal
04/17/2026 08 PM PDT 4.02 68 0 Normal
04/17/2026 09 PM PDT 4.02 68 0 Normal
04/17/2026 10 PM PDT 4.02 68 0 Normal
04/17/2026 11 PM PDT 4.01 67 - Normal
04/18/2026 12 AM PDT 4.01 67 0 Normal
04/18/2026 01 AM PDT 4.01 67 0 Normal
04/18/2026 02 AM PDT 4.01 67 0 Normal
04/18/2026 03 AM PDT 4.01 67 0 Normal
04/18/2026 04 AM PDT 4.01 67 0 Normal
04/18/2026 05 AM PDT 4.01 67 0 Normal
04/18/2026 06 AM PDT 4.01 67 0 Normal
04/18/2026 07 AM PDT 4.01 67 0 Normal
04/18/2026 08 AM PDT 4.01 67 0 Normal
04/18/2026 09 AM PDT 4.01 67 0 Normal
04/18/2026 10 AM PDT 4.01 67 0 Normal
04/18/2026 11 AM PDT 4.00 66 - Normal
04/18/2026 12 PM PDT 4.01 67 + Normal
04/18/2026 01 PM PDT 4.00 66 - Normal
04/18/2026 02 PM PDT 4.00 66 0 Normal
04/18/2026 03 PM PDT 4.00 66 0 Normal
04/18/2026 04 PM PDT 4.00 66 0 Normal
04/18/2026 05 PM PDT 3.99 65 - Normal
04/18/2026 06 PM PDT 3.99 65 0 Normal
04/18/2026 07 PM PDT 3.99 65 0 Normal
04/18/2026 08 PM PDT 3.99 65 0 Normal
04/18/2026 09 PM PDT 3.99 65 0 Normal
04/18/2026 10 PM PDT 3.99 65 0 Normal
04/18/2026 11 PM PDT 3.99 65 0 Normal
04/19/2026 12 AM PDT 3.99 65 0 Normal
04/19/2026 01 AM PDT 3.99 65 0 Normal
04/19/2026 02 AM PDT 3.99 65 0 Normal
04/19/2026 03 AM PDT 3.98 64 - Normal
04/19/2026 04 AM PDT 3.98 64 0 Normal
04/19/2026 05 AM PDT 3.98 64 0 Normal
04/19/2026 06 AM PDT 3.98 64 0 Normal
04/19/2026 07 AM PDT 3.98 64 0 Normal
04/19/2026 08 AM PDT 3.98 64 0 Normal
04/19/2026 09 AM PDT 3.98 64 0 Normal
04/19/2026 10 AM PDT 3.98 64 0 Normal
04/19/2026 11 AM PDT 3.98 64 0 Normal
04/19/2026 12 PM PDT 3.99 65 + Normal
04/19/2026 01 PM PDT 3.98 64 - Normal
04/19/2026 02 PM PDT 3.98 64 0 Normal
04/19/2026 03 PM PDT 3.98 64 0 Normal
04/19/2026 04 PM PDT 3.97 63 - Normal
04/19/2026 05 PM PDT 3.96 62 - Normal
04/19/2026 06 PM PDT 3.97 63 + Normal
04/19/2026 07 PM PDT 3.97 63 0 Normal
04/19/2026 08 PM PDT 3.97 63 0 Normal
04/19/2026 09 PM PDT 3.97 63 0 Normal
04/19/2026 10 PM PDT 3.96 62 - Normal
04/19/2026 11 PM PDT 3.96 62 0 Normal
04/20/2026 12 AM PDT 3.96 62 0 Normal
04/20/2026 01 AM PDT 3.96 62 0 Normal
04/20/2026 02 AM PDT 3.96 62 0 Normal
04/20/2026 03 AM PDT 3.96 62 0 Normal
04/20/2026 04 AM PDT 3.96 62 0 Normal
04/20/2026 05 AM PDT 3.96 62 0 Normal
04/20/2026 06 AM PDT 3.96 62 0 Normal
04/20/2026 07 AM PDT 3.96 62 0 Normal
04/20/2026 08 AM PDT 3.96 62 0 Normal
04/20/2026 09 AM PDT 3.96 62 0 Normal
04/20/2026 10 AM PDT 3.97 63 + Normal
04/20/2026 11 AM PDT 3.97 63 0 Normal
04/20/2026 12 PM PDT 3.96 62 - Normal
04/20/2026 01 PM PDT 3.96 62 0 Normal
04/20/2026 02 PM PDT 3.98 64 + Normal
04/20/2026 03 PM PDT 4.03 69 + Normal
04/20/2026 04 PM PDT 4.09 74 + Normal
04/20/2026 05 PM PDT 4.42 111 + Normal
04/20/2026 06 PM PDT 4.37 105 - Normal
04/20/2026 07 PM PDT 4.58 133 + Normal
04/20/2026 08 PM PDT 4.56 130 - Normal
04/20/2026 09 PM PDT 4.79 165 + Normal
04/20/2026 10 PM PDT 4.74 157 - Normal
04/20/2026 11 PM PDT 4.93 187 + Normal
04/21/2026 12 AM PDT 5.04 206 + Normal
04/21/2026 01 AM PDT 5.25 244 + Normal
04/21/2026 02 AM PDT 5.42 278 + Normal
04/21/2026 03 AM PDT 5.48 291 + Normal
04/21/2026 04 AM PDT 5.50 295 + Normal
04/21/2026 05 AM PDT 5.58 313 + Normal
04/21/2026 06 AM PDT 5.62 322 + Normal
04/21/2026 07 AM PDT 5.66 331 + Normal
04/21/2026 08 AM PDT 5.61 320 - Normal
04/21/2026 09 AM PDT 5.53 302 - Normal
04/21/2026 10 AM PDT 5.49 293 - Normal
04/21/2026 11 AM PDT 5.41 276 - Normal
04/21/2026 12 PM PDT 5.48 291 + Normal
04/21/2026 01 PM PDT 5.68 336 + Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
04/21/2026 02 PM PDT 5.96 405 Normal
04/21/2026 03 PM PDT 6.32 505 + Normal
04/21/2026 04 PM PDT 6.69 621 + Normal
04/21/2026 05 PM PDT 7.01 733 + Normal
04/21/2026 06 PM PDT 7.25 824 + Normal
04/21/2026 07 PM PDT 7.32 851 + Normal
04/21/2026 08 PM PDT 7.25 824 - Normal
04/21/2026 09 PM PDT 7.15 785 - Normal
04/21/2026 10 PM PDT 7.04 744 - Normal
04/21/2026 11 PM PDT 6.95 711 - Normal
04/22/2026 12 AM PDT 6.78 652 - Normal
04/22/2026 01 AM PDT 6.63 602 - Normal
04/22/2026 02 AM PDT 6.50 560 - Normal
04/22/2026 03 AM PDT 6.38 523 - Normal
04/22/2026 04 AM PDT 6.29 497 - Normal
04/22/2026 05 AM PDT 6.20 471 - Normal
04/22/2026 06 AM PDT 6.13 451 - Normal
04/22/2026 07 AM PDT 6.10 443 - Normal
04/22/2026 08 AM PDT 6.14 454 + Normal
04/22/2026 09 AM PDT 6.22 476 + Normal
04/22/2026 10 AM PDT 6.31 502 + Normal
04/22/2026 11 AM PDT 6.36 517 + Normal
04/22/2026 12 PM PDT 6.33 508 - Normal
04/22/2026 01 PM PDT 6.24 482 - Normal
04/22/2026 02 PM PDT 6.12 448 - Normal
04/22/2026 03 PM PDT 6.01 418 - Normal
04/22/2026 04 PM PDT 5.91 392 - Normal
04/22/2026 05 PM PDT 5.82 370 - Normal
04/22/2026 06 PM PDT 5.76 355 - Normal
04/22/2026 07 PM PDT 5.70 341 - Normal
04/22/2026 08 PM PDT 5.64 327 - Normal
04/22/2026 09 PM PDT 5.59 315 - Normal
04/22/2026 10 PM PDT 5.54 304 - Normal
04/22/2026 11 PM PDT 5.49 293 - Normal
04/23/2026 12 AM PDT 5.45 284 - Normal
04/23/2026 01 AM PDT 5.41 276 - Normal
04/23/2026 02 AM PDT 5.37 268 - Normal
04/23/2026 03 AM PDT 5.33 260 - Normal
04/23/2026 04 AM PDT 5.30 254 - Normal
04/23/2026 05 AM PDT 5.26 246 - Normal
04/23/2026 06 AM PDT 5.23 240 - Normal
04/23/2026 07 AM PDT 5.20 235 - Normal
04/23/2026 08 AM PDT 5.17 229 - Normal
04/23/2026 09 AM PDT 5.14 224 - Normal
04/23/2026 10 AM PDT 5.12 220 - Normal
04/23/2026 11 AM PDT 5.09 215 - Normal
04/23/2026 12 PM PDT 5.06 210 - Normal
04/23/2026 01 PM PDT 5.04 206 - Normal
04/23/2026 02 PM PDT 5.01 201 - Normal
04/23/2026 03 PM PDT 4.99 197 - Normal
04/23/2026 04 PM PDT 4.96 192 - Normal
04/23/2026 05 PM PDT 4.94 189 - Normal
04/23/2026 06 PM PDT 4.92 186 - Normal
04/23/2026 07 PM PDT 4.90 182 - Normal
04/23/2026 08 PM PDT 4.88 179 - Normal
04/23/2026 09 PM PDT 4.86 176 - Normal
04/23/2026 10 PM PDT 4.84 173 - Normal
04/23/2026 11 PM PDT 4.82 169 - Normal
04/24/2026 12 AM PDT 4.80 166 - Normal
04/24/2026 01 AM PDT 4.78 163 - Normal
04/24/2026 02 AM PDT 4.76 160 - Normal
04/24/2026 03 AM PDT 4.75 158 - Normal
04/24/2026 04 AM PDT 4.73 155 - Normal
04/24/2026 05 AM PDT 4.71 152 - Normal
04/24/2026 06 AM PDT 4.70 151 - Normal
04/24/2026 07 AM PDT 4.68 148 - Normal
04/24/2026 08 AM PDT 4.67 147 - Normal
04/24/2026 09 AM PDT 4.65 144 - Normal
04/24/2026 10 AM PDT 4.64 142 - Normal
04/24/2026 11 AM PDT 4.63 141 - Normal
04/24/2026 12 PM PDT 4.61 138 - Normal
04/24/2026 01 PM PDT 4.60 136 - Normal
04/24/2026 02 PM PDT 4.59 135 - Normal
04/24/2026 03 PM PDT 4.58 133 - Normal
04/24/2026 04 PM PDT 4.56 130 - Normal
04/24/2026 05 PM PDT 4.55 129 - Normal
04/24/2026 06 PM PDT 4.54 128 - Normal
04/24/2026 07 PM PDT 4.53 126 - Normal
04/24/2026 08 PM PDT 4.52 125 - Normal
04/24/2026 09 PM PDT 4.51 123 - Normal
04/24/2026 10 PM PDT 4.50 122 - Normal
04/24/2026 11 PM PDT 4.49 121 - Normal
04/25/2026 12 AM PDT 4.48 119 - Normal
04/25/2026 01 AM PDT 4.47 118 - Normal
04/25/2026 02 AM PDT 4.46 117 - Normal
04/25/2026 03 AM PDT 4.45 115 - Normal
04/25/2026 04 AM PDT 4.45 115 0 Normal
04/25/2026 05 AM PDT 4.44 114 - Normal
04/25/2026 06 AM PDT 4.43 113 - Normal
04/25/2026 07 AM PDT 4.42 111 - Normal
04/25/2026 08 AM PDT 4.41 110 - Normal
04/25/2026 09 AM PDT 4.41 110 0 Normal
04/25/2026 10 AM PDT 4.40 109 - Normal
04/25/2026 11 AM PDT 4.39 108 - Normal
04/25/2026 12 PM PDT 4.38 106 - Normal
04/25/2026 01 PM PDT 4.38 106 0 Normal
04/25/2026 02 PM PDT 4.37 105 - Normal
04/25/2026 03 PM PDT 4.36 104 - Normal
04/25/2026 04 PM PDT 4.36 104 0 Normal
04/25/2026 05 PM PDT 4.35 103 - Normal
04/25/2026 06 PM PDT 4.34 101 - Normal
04/25/2026 07 PM PDT 4.34 101 0 Normal
04/25/2026 08 PM PDT 4.33 100 - Normal
04/25/2026 09 PM PDT 4.33 100 0 Normal
04/25/2026 10 PM PDT 4.32 99 - Normal
04/25/2026 11 PM PDT 4.31 98 - Normal
04/26/2026 12 AM PDT 4.31 98 0 Normal
04/26/2026 01 AM PDT 4.30 97 - Normal
04/26/2026 02 AM PDT 4.30 97 0 Normal
04/26/2026 03 AM PDT 4.29 96 - Normal
04/26/2026 04 AM PDT 4.29 96 0 Normal
04/26/2026 05 AM PDT 4.28 95 - 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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