National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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SACRAMENTO RIVER - COLUSA BRIDGE (CLUC1)
Latitude: 39.21º NLongitude: 122.00º WElevation: 70 Feet
Location: Colusa County in CaliforniaBulletin Group: Upper SacramentoRiver Group: Upper Sacramento
Issuance Time: May 20 2025 at 7:34 AM PDTNext Issuance: May 21 2025 at 9:00 AM PDT
Action/Monitor: 63.0 FeetMinor Flood: 70.0 FeetModerate Flood: 72.0 FeetMajor Flood: 73.0 Feet


# Tabular Observed and Forecast Hydrograph Information
#
# Location: Sacramento River - Colusa Bridge (CLUC1)
#
# File Generation Time:  05/20/2025 at 07:34 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/15/2025 at 07:00 AM PDT
# Maximum Observed Stage:                       46.21 Feet
# Maximum Observed Flow:                        10916 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/23/2025 at 11:00 AM PDT
# Maximum Forecast Stage:                       46.82 Feet
# Maximum Forecast Flow:                        11557 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/15/2025 07 AM PDT           46.21          10916                        Normal
  05/15/2025 08 AM PDT           46.02          10720         -              Normal
  05/15/2025 09 AM PDT           45.97          10660         -              Normal
  05/15/2025 10 AM PDT           46.10          10802         +              Normal
  05/15/2025 11 AM PDT           45.81          10449         -              Normal
  05/15/2025 12 PM PDT           46.00          10700         +              Normal
  05/15/2025 01 PM PDT           45.81          10449         -              Normal
  05/15/2025 02 PM PDT           45.75          10370         -              Normal
  05/15/2025 03 PM PDT           45.73          10344         -              Normal
  05/15/2025 04 PM PDT           45.98          10673         +              Normal
  05/15/2025 05 PM PDT           45.69          10292         -              Normal
  05/15/2025 06 PM PDT           45.42           9947         -              Normal
  05/15/2025 07 PM PDT           45.77          10396         +              Normal
  05/15/2025 08 PM PDT           45.66          10254         -              Normal
  05/15/2025 09 PM PDT           45.27           9758         -              Normal
  05/15/2025 10 PM PDT           45.64          10228         +              Normal
  05/15/2025 11 PM PDT           45.27           9758         -              Normal
  05/16/2025 12 AM PDT           45.52          10074         +              Normal
  05/16/2025 01 AM PDT           45.14           9596         -              Normal
  05/16/2025 02 AM PDT           45.17           9633         +              Normal
  05/16/2025 03 AM PDT           45.08           9523         -              Normal
  05/16/2025 04 AM PDT           45.16           9621         +              Normal
  05/16/2025 05 AM PDT           45.11           9559         -              Normal
  05/16/2025 06 AM PDT           45.18           9646         +              Normal
  05/16/2025 07 AM PDT           45.10           9547         -              Normal
  05/16/2025 08 AM PDT           45.09           9535         -              Normal
  05/16/2025 09 AM PDT           45.23           9708         +              Normal
  05/16/2025 10 AM PDT           45.12           9572         -              Normal
  05/16/2025 11 AM PDT           44.95           9364         -              Normal
  05/16/2025 12 PM PDT           44.89           9290         -              Normal
  05/16/2025 01 PM PDT           44.92           9327         +              Normal
  05/16/2025 02 PM PDT           44.80           9181         -              Normal
  05/16/2025 03 PM PDT           44.94           9351         +              Normal
  05/16/2025 04 PM PDT           44.88           9278         -              Normal
  05/16/2025 05 PM PDT           44.94           9351         +              Normal
  05/16/2025 06 PM PDT           44.58           8920         -              Normal
  05/16/2025 07 PM PDT           44.68           9038         +              Normal
  05/16/2025 08 PM PDT           44.50           8826         -              Normal
  05/16/2025 09 PM PDT           44.38           8680         -              Normal
  05/16/2025 10 PM PDT           44.60           8943         +              Normal
  05/16/2025 11 PM PDT           44.47           8789         -              Normal
  05/17/2025 12 AM PDT           44.35           8643         -              Normal
  05/17/2025 01 AM PDT           44.44           8752         +              Normal
  05/17/2025 02 AM PDT           44.31           8595         -              Normal
  05/17/2025 03 AM PDT           44.17           8428         -              Normal
  05/17/2025 04 AM PDT           44.16           8416         -              Normal
  05/17/2025 05 AM PDT           44.24           8511         +              Normal
  05/17/2025 06 AM PDT           44.27           8547         +              Normal
  05/17/2025 07 AM PDT           44.20           8464         -              Normal
  05/17/2025 08 AM PDT           44.31           8595         +              Normal
  05/17/2025 09 AM PDT           44.09           8334         -              Normal
  05/17/2025 10 AM PDT           44.11           8357         +              Normal
  05/17/2025 11 AM PDT           44.11           8357         0              Normal
  05/17/2025 12 PM PDT           44.25           8523         +              Normal
  05/17/2025 01 PM PDT           44.30           8583         +              Normal
  05/17/2025 02 PM PDT           44.19           8452         -              Normal
  05/17/2025 03 PM PDT           44.08           8322         -              Normal
  05/17/2025 04 PM PDT           44.28           8559         +              Normal
  05/17/2025 05 PM PDT           43.98           8204         -              Normal
  05/17/2025 06 PM PDT           44.05           8287         +              Normal
  05/17/2025 07 PM PDT           44.03           8264         -              Normal
  05/17/2025 08 PM PDT           44.19           8452         +              Normal
  05/17/2025 09 PM PDT           44.03           8264         -              Normal
  05/17/2025 10 PM PDT           44.31           8595         +              Normal
  05/17/2025 11 PM PDT           44.10           8346         -              Normal
  05/18/2025 12 AM PDT           44.15           8404         +              Normal
  05/18/2025 01 AM PDT           44.33           8619         +              Normal
  05/18/2025 02 AM PDT           44.17           8428         -              Normal
  05/18/2025 03 AM PDT           44.37           8667         +              Normal
  05/18/2025 04 AM PDT           44.09           8334         -              Normal
  05/18/2025 05 AM PDT           44.43           8740         +              Normal
  05/18/2025 06 AM PDT           44.19           8452         -              Normal
  05/18/2025 07 AM PDT           44.23           8499         +              Normal
  05/18/2025 08 AM PDT           44.27           8547         +              Normal
  05/18/2025 09 AM PDT           44.40           8704         +              Normal
  05/18/2025 10 AM PDT           44.27           8547         -              Normal
  05/18/2025 11 AM PDT           44.28           8559         +              Normal
  05/18/2025 12 PM PDT           44.27           8547         -              Normal
  05/18/2025 01 PM PDT           44.48           8801         +              Normal
  05/18/2025 02 PM PDT           44.31           8595         -              Normal
  05/18/2025 03 PM PDT           44.26           8535         -              Normal
  05/18/2025 04 PM PDT           44.33           8619         +              Normal
  05/18/2025 05 PM PDT           44.39           8692         +              Normal
  05/18/2025 06 PM PDT           44.48           8801         +              Normal
  05/18/2025 07 PM PDT           44.37           8667         -              Normal
  05/18/2025 08 PM PDT           44.35           8643         -              Normal
  05/18/2025 09 PM PDT           44.26           8535         -              Normal
  05/18/2025 10 PM PDT           44.29           8571         +              Normal
  05/18/2025 11 PM PDT           44.40           8704         +              Normal
  05/19/2025 12 AM PDT           44.31           8595         -              Normal
  05/19/2025 01 AM PDT           44.30           8583         -              Normal
  05/19/2025 02 AM PDT           44.30           8583         0              Normal
  05/19/2025 03 AM PDT           44.39           8692         +              Normal
  05/19/2025 04 AM PDT           44.33           8619         -              Normal
  05/19/2025 05 AM PDT           44.35           8643         +              Normal
  05/19/2025 06 AM PDT           44.36           8655         +              Normal
  05/19/2025 07 AM PDT           44.39           8692         +              Normal
  05/19/2025 08 AM PDT           44.38           8680         -              Normal
  05/19/2025 09 AM PDT           44.38           8680         0              Normal
  05/19/2025 10 AM PDT           44.38           8680         0              Normal
  05/19/2025 11 AM PDT           44.38           8680         0              Normal
  05/19/2025 12 PM PDT           44.40           8704         +              Normal
  05/19/2025 01 PM PDT           44.44           8752         +              Normal
  05/19/2025 02 PM PDT           44.52           8849         +              Normal
  05/19/2025 03 PM PDT           44.40           8704         -              Normal
  05/19/2025 04 PM PDT           44.63           8979         +              Normal
  05/19/2025 05 PM PDT           44.40           8704         -              Normal
  05/19/2025 06 PM PDT           44.36           8655         -              Normal
  05/19/2025 07 PM PDT           44.63           8979         +              Normal
  05/19/2025 08 PM PDT           44.38           8680         -              Normal
  05/19/2025 09 PM PDT           44.42           8728         +              Normal
  05/19/2025 10 PM PDT           44.53           8861         +              Normal
  05/19/2025 11 PM PDT           44.46           8777         -              Normal
  05/20/2025 12 AM PDT           44.59           8931         +              Normal
  05/20/2025 01 AM PDT           44.42           8728         -              Normal
  05/20/2025 02 AM PDT           44.47           8789         +              Normal
  05/20/2025 03 AM PDT           44.41           8716         -              Normal
  05/20/2025 04 AM PDT           44.34           8631         -              Normal
  05/20/2025 05 AM PDT           44.31           8595         -              Normal
  05/20/2025 06 AM PDT           44.30           8583         -              Normal
  05/20/2025 07 AM PDT           44.29           8571         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/20/2025 08 AM PDT           44.28           8559                        Normal
  05/20/2025 09 AM PDT           44.27           8547         -              Normal
  05/20/2025 10 AM PDT           44.27           8547         0              Normal
  05/20/2025 11 AM PDT           44.26           8535         -              Normal
  05/20/2025 12 PM PDT           44.25           8523         -              Normal
  05/20/2025 01 PM PDT           44.24           8511         -              Normal
  05/20/2025 02 PM PDT           44.24           8511         0              Normal
  05/20/2025 03 PM PDT           44.23           8499         -              Normal
  05/20/2025 04 PM PDT           44.23           8499         0              Normal
  05/20/2025 05 PM PDT           44.23           8499         0              Normal
  05/20/2025 06 PM PDT           44.22           8487         -              Normal
  05/20/2025 07 PM PDT           44.22           8487         0              Normal
  05/20/2025 08 PM PDT           44.22           8487         0              Normal
  05/20/2025 09 PM PDT           44.23           8499         +              Normal
  05/20/2025 10 PM PDT           44.23           8499         0              Normal
  05/20/2025 11 PM PDT           44.23           8499         0              Normal
  05/21/2025 12 AM PDT           44.24           8511         +              Normal
  05/21/2025 01 AM PDT           44.24           8511         0              Normal
  05/21/2025 02 AM PDT           44.25           8523         +              Normal
  05/21/2025 03 AM PDT           44.27           8547         +              Normal
  05/21/2025 04 AM PDT           44.31           8595         +              Normal
  05/21/2025 05 AM PDT           44.36           8655         +              Normal
  05/21/2025 06 AM PDT           44.43           8740         +              Normal
  05/21/2025 07 AM PDT           44.51           8838         +              Normal
  05/21/2025 08 AM PDT           44.62           8967         +              Normal
  05/21/2025 09 AM PDT           44.73           9097         +              Normal
  05/21/2025 10 AM PDT           44.84           9230         +              Normal
  05/21/2025 11 AM PDT           44.96           9376         +              Normal
  05/21/2025 12 PM PDT           45.08           9523         +              Normal
  05/21/2025 01 PM PDT           45.19           9658         +              Normal
  05/21/2025 02 PM PDT           45.30           9795         +              Normal
  05/21/2025 03 PM PDT           45.41           9934         +              Normal
  05/21/2025 04 PM PDT           45.51          10062         +              Normal
  05/21/2025 05 PM PDT           45.60          10177         +              Normal
  05/21/2025 06 PM PDT           45.69          10292         +              Normal
  05/21/2025 07 PM PDT           45.77          10396         +              Normal
  05/21/2025 08 PM PDT           45.84          10488         +              Normal
  05/21/2025 09 PM PDT           45.91          10580         +              Normal
  05/21/2025 10 PM PDT           45.98          10673         +              Normal
  05/21/2025 11 PM PDT           46.05          10751         +              Normal
  05/22/2025 12 AM PDT           46.12          10823         +              Normal
  05/22/2025 01 AM PDT           46.18          10885         +              Normal
  05/22/2025 02 AM PDT           46.24          10947         +              Normal
  05/22/2025 03 AM PDT           46.30          11010         +              Normal
  05/22/2025 04 AM PDT           46.35          11062         +              Normal
  05/22/2025 05 AM PDT           46.39          11104         +              Normal
  05/22/2025 06 AM PDT           46.43          11146         +              Normal
  05/22/2025 07 AM PDT           46.47          11188         +              Normal
  05/22/2025 08 AM PDT           46.50          11220         +              Normal
  05/22/2025 09 AM PDT           46.54          11262         +              Normal
  05/22/2025 10 AM PDT           46.56          11283         +              Normal
  05/22/2025 11 AM PDT           46.59          11314         +              Normal
  05/22/2025 12 PM PDT           46.62          11345         +              Normal
  05/22/2025 01 PM PDT           46.64          11367         +              Normal
  05/22/2025 02 PM PDT           46.66          11388         +              Normal
  05/22/2025 03 PM PDT           46.68          11409         +              Normal
  05/22/2025 04 PM PDT           46.70          11430         +              Normal
  05/22/2025 05 PM PDT           46.71          11440         +              Normal
  05/22/2025 06 PM PDT           46.73          11461         +              Normal
  05/22/2025 07 PM PDT           46.74          11472         +              Normal
  05/22/2025 08 PM PDT           46.75          11483         +              Normal
  05/22/2025 09 PM PDT           46.76          11493         +              Normal
  05/22/2025 10 PM PDT           46.77          11504         +              Normal
  05/22/2025 11 PM PDT           46.78          11514         +              Normal
  05/23/2025 12 AM PDT           46.79          11525         +              Normal
  05/23/2025 01 AM PDT           46.79          11525         0              Normal
  05/23/2025 02 AM PDT           46.80          11536         +              Normal
  05/23/2025 03 AM PDT           46.80          11536         0              Normal
  05/23/2025 04 AM PDT           46.80          11536         0              Normal
  05/23/2025 05 AM PDT           46.81          11546         +              Normal
  05/23/2025 06 AM PDT           46.81          11546         0              Normal
  05/23/2025 07 AM PDT           46.81          11546         0              Normal
  05/23/2025 08 AM PDT           46.81          11546         0              Normal
  05/23/2025 09 AM PDT           46.81          11546         0              Normal
  05/23/2025 10 AM PDT           46.81          11546         0              Normal
  05/23/2025 11 AM PDT           46.82          11557         +              Normal
  05/23/2025 12 PM PDT           46.82          11557         0              Normal
  05/23/2025 01 PM PDT           46.82          11557         0              Normal
  05/23/2025 02 PM PDT           46.81          11546         -              Normal
  05/23/2025 03 PM PDT           46.81          11546         0              Normal
  05/23/2025 04 PM PDT           46.81          11546         0              Normal
  05/23/2025 05 PM PDT           46.81          11546         0              Normal
  05/23/2025 06 PM PDT           46.81          11546         0              Normal
  05/23/2025 07 PM PDT           46.81          11546         0              Normal
  05/23/2025 08 PM PDT           46.81          11546         0              Normal
  05/23/2025 09 PM PDT           46.81          11546         0              Normal
  05/23/2025 10 PM PDT           46.81          11546         0              Normal
  05/23/2025 11 PM PDT           46.81          11546         0              Normal
  05/24/2025 12 AM PDT           46.80          11536         -              Normal
  05/24/2025 01 AM PDT           46.80          11536         0              Normal
  05/24/2025 02 AM PDT           46.80          11536         0              Normal
  05/24/2025 03 AM PDT           46.80          11536         0              Normal
  05/24/2025 04 AM PDT           46.80          11536         0              Normal
  05/24/2025 05 AM PDT           46.80          11536         0              Normal
  05/24/2025 06 AM PDT           46.79          11525         -              Normal
  05/24/2025 07 AM PDT           46.79          11525         0              Normal
  05/24/2025 08 AM PDT           46.79          11525         0              Normal
  05/24/2025 09 AM PDT           46.79          11525         0              Normal
  05/24/2025 10 AM PDT           46.78          11514         -              Normal
  05/24/2025 11 AM PDT           46.78          11514         0              Normal
  05/24/2025 12 PM PDT           46.78          11514         0              Normal
  05/24/2025 01 PM PDT           46.78          11514         0              Normal
  05/24/2025 02 PM PDT           46.78          11514         0              Normal
  05/24/2025 03 PM PDT           46.77          11504         -              Normal
  05/24/2025 04 PM PDT           46.77          11504         0              Normal
  05/24/2025 05 PM PDT           46.77          11504         0              Normal
  05/24/2025 06 PM PDT           46.77          11504         0              Normal
  05/24/2025 07 PM PDT           46.77          11504         0              Normal
  05/24/2025 08 PM PDT           46.77          11504         0              Normal
  05/24/2025 09 PM PDT           46.76          11493         -              Normal
  05/24/2025 10 PM PDT           46.76          11493         0              Normal
  05/24/2025 11 PM PDT           46.76          11493         0              Normal
  05/25/2025 12 AM PDT           46.76          11493         0              Normal
  05/25/2025 01 AM PDT           46.76          11493         0              Normal
  05/25/2025 02 AM PDT           46.76          11493         0              Normal
  05/25/2025 03 AM PDT           46.75          11483         -              Normal
  05/25/2025 04 AM PDT           46.75          11483         0              Normal
  05/25/2025 05 AM PDT           46.75          11483         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.