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

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COTTONWOOD CREEK - COTTONWOOD (CWAC1)
Latitude: 40.39º NLongitude: 122.24º WElevation: 364 FeetForecast Type: Unofficial Location
Location: Tehama County in CaliforniaBulletin Group: Upper SacramentoRiver Group: Upper Sacramento
Issuance Time: Mar 21 2026 at 6:57 AM PDTNext Issuance: Mar 22 2026 at 9:00 AM PDT
Action/Monitor: N/A Minor Flood: N/A Moderate Flood: N/A Major Flood: N/A


# Tabular Observed and Forecast Hydrograph Information
#
# Location: Cottonwood Creek - Cottonwood (CWAC1)
#
# File Generation Time:  03/21/2026 at 06:59 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  03/16/2026 at 06:00 AM PDT
# Maximum Observed Stage:                       4.41 Feet
# Maximum Observed Flow:                        812 cfs
#
# Earliest Date & Time of Maximum Forecast:     03/21/2026 at 07:00 AM PDT
# Maximum Forecast Stage:                       4.02 Feet
# Maximum Forecast Flow:                        644 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  03/16/2026 06 AM PDT            4.41            812                Not Applicable
  03/16/2026 07 AM PDT            4.40            807         -      Not Applicable
  03/16/2026 08 AM PDT            4.38            798         -      Not Applicable
  03/16/2026 09 AM PDT            4.40            807         +      Not Applicable
  03/16/2026 10 AM PDT            4.38            798         -      Not Applicable
  03/16/2026 11 AM PDT            4.38            798         0      Not Applicable
  03/16/2026 12 PM PDT            4.39            803         +      Not Applicable
  03/16/2026 01 PM PDT            4.39            803         0      Not Applicable
  03/16/2026 02 PM PDT            4.38            798         -      Not Applicable
  03/16/2026 03 PM PDT            4.38            798         0      Not Applicable
  03/16/2026 04 PM PDT            4.36            789         -      Not Applicable
  03/16/2026 05 PM PDT            4.38            798         +      Not Applicable
  03/16/2026 06 PM PDT            4.38            798         0      Not Applicable
  03/16/2026 07 PM PDT            4.35            785         -      Not Applicable
  03/16/2026 08 PM PDT            4.37            794         +      Not Applicable
  03/16/2026 09 PM PDT            4.36            789         -      Not Applicable
  03/16/2026 10 PM PDT            4.37            794         +      Not Applicable
  03/16/2026 11 PM PDT            4.34            780         -      Not Applicable
  03/17/2026 12 AM PDT            4.35            785         +      Not Applicable
  03/17/2026 01 AM PDT            4.35            785         0      Not Applicable
  03/17/2026 02 AM PDT            4.34            780         -      Not Applicable
  03/17/2026 03 AM PDT            4.34            780         0      Not Applicable
  03/17/2026 04 AM PDT            4.34            780         0      Not Applicable
  03/17/2026 05 AM PDT            4.34            780         0      Not Applicable
  03/17/2026 06 AM PDT            4.33            776         -      Not Applicable
  03/17/2026 07 AM PDT            4.34            780         +      Not Applicable
  03/17/2026 08 AM PDT            4.31            767         -      Not Applicable
  03/17/2026 09 AM PDT            4.33            776         +      Not Applicable
  03/17/2026 10 AM PDT            4.31            767         -      Not Applicable
  03/17/2026 11 AM PDT            4.32            771         +      Not Applicable
  03/17/2026 12 PM PDT            4.31            767         -      Not Applicable
  03/17/2026 01 PM PDT            4.31            767         0      Not Applicable
  03/17/2026 02 PM PDT            4.28            754         -      Not Applicable
  03/17/2026 03 PM PDT            4.29            758         +      Not Applicable
  03/17/2026 04 PM PDT            4.30            762         +      Not Applicable
  03/17/2026 05 PM PDT            4.31            767         +      Not Applicable
  03/17/2026 06 PM PDT            4.29            758         -      Not Applicable
  03/17/2026 07 PM PDT            4.28            754         -      Not Applicable
  03/17/2026 08 PM PDT            4.29            758         +      Not Applicable
  03/17/2026 09 PM PDT            4.29            758         0      Not Applicable
  03/17/2026 10 PM PDT            4.29            758         0      Not Applicable
  03/17/2026 11 PM PDT            4.28            754         -      Not Applicable
  03/18/2026 12 AM PDT            4.28            754         0      Not Applicable
  03/18/2026 01 AM PDT            4.30            762         +      Not Applicable
  03/18/2026 02 AM PDT            4.26            745         -      Not Applicable
  03/18/2026 03 AM PDT            4.26            745         0      Not Applicable
  03/18/2026 04 AM PDT            4.26            745         0      Not Applicable
  03/18/2026 05 AM PDT            4.23            732         -      Not Applicable
  03/18/2026 06 AM PDT            4.23            732         0      Not Applicable
  03/18/2026 07 AM PDT            4.25            741         +      Not Applicable
  03/18/2026 08 AM PDT            4.26            745         +      Not Applicable
  03/18/2026 09 AM PDT            4.24            736         -      Not Applicable
  03/18/2026 10 AM PDT            4.23            732         -      Not Applicable
  03/18/2026 11 AM PDT            4.24            736         +      Not Applicable
  03/18/2026 12 PM PDT            4.24            736         0      Not Applicable
  03/18/2026 01 PM PDT            4.24            736         0      Not Applicable
  03/18/2026 02 PM PDT            4.22            728         -      Not Applicable
  03/18/2026 03 PM PDT            4.22            728         0      Not Applicable
  03/18/2026 04 PM PDT            4.21            723         -      Not Applicable
  03/18/2026 05 PM PDT            4.23            732         +      Not Applicable
  03/18/2026 06 PM PDT            4.24            736         +      Not Applicable
  03/18/2026 07 PM PDT            4.22            728         -      Not Applicable
  03/18/2026 08 PM PDT            4.22            728         0      Not Applicable
  03/18/2026 09 PM PDT            4.21            723         -      Not Applicable
  03/18/2026 10 PM PDT            4.20            719         -      Not Applicable
  03/18/2026 11 PM PDT            4.20            719         0      Not Applicable
  03/19/2026 12 AM PDT            4.22            728         +      Not Applicable
  03/19/2026 01 AM PDT            4.21            723         -      Not Applicable
  03/19/2026 02 AM PDT            4.22            728         +      Not Applicable
  03/19/2026 03 AM PDT            4.21            723         -      Not Applicable
  03/19/2026 04 AM PDT            4.19            715         -      Not Applicable
  03/19/2026 05 AM PDT            4.20            719         +      Not Applicable
  03/19/2026 06 AM PDT            4.20            719         0      Not Applicable
  03/19/2026 07 AM PDT            4.17            706         -      Not Applicable
  03/19/2026 08 AM PDT            4.17            706         0      Not Applicable
  03/19/2026 09 AM PDT            4.18            710         +      Not Applicable
  03/19/2026 10 AM PDT            4.15            698         -      Not Applicable
  03/19/2026 11 AM PDT            4.17            706         +      Not Applicable
  03/19/2026 12 PM PDT            4.16            702         -      Not Applicable
  03/19/2026 01 PM PDT            4.16            702         0      Not Applicable
  03/19/2026 02 PM PDT            4.15            698         -      Not Applicable
  03/19/2026 03 PM PDT            4.18            710         +      Not Applicable
  03/19/2026 04 PM PDT            4.15            698         -      Not Applicable
  03/19/2026 05 PM PDT            4.16            702         +      Not Applicable
  03/19/2026 06 PM PDT            4.16            702         0      Not Applicable
  03/19/2026 07 PM PDT            4.14            694         -      Not Applicable
  03/19/2026 08 PM PDT            4.16            702         +      Not Applicable
  03/19/2026 09 PM PDT            4.13            689         -      Not Applicable
  03/19/2026 10 PM PDT            4.14            694         +      Not Applicable
  03/19/2026 11 PM PDT            4.14            694         0      Not Applicable
  03/20/2026 12 AM PDT            4.12            685         -      Not Applicable
  03/20/2026 01 AM PDT            4.12            685         0      Not Applicable
  03/20/2026 02 AM PDT            4.13            689         +      Not Applicable
  03/20/2026 03 AM PDT            4.11            681         -      Not Applicable
  03/20/2026 04 AM PDT            4.11            681         0      Not Applicable
  03/20/2026 05 AM PDT            4.10            677         -      Not Applicable
  03/20/2026 06 AM PDT            4.09            673         -      Not Applicable
  03/20/2026 07 AM PDT            4.10            677         +      Not Applicable
  03/20/2026 08 AM PDT            4.09            673         -      Not Applicable
  03/20/2026 09 AM PDT            4.07            664         -      Not Applicable
  03/20/2026 10 AM PDT            4.08            669         +      Not Applicable
  03/20/2026 11 AM PDT            4.06            660         -      Not Applicable
  03/20/2026 12 PM PDT            4.05            656         -      Not Applicable
  03/20/2026 01 PM PDT            4.04            652         -      Not Applicable
  03/20/2026 02 PM PDT            4.06            660         +      Not Applicable
  03/20/2026 03 PM PDT            4.06            660         0      Not Applicable
  03/20/2026 04 PM PDT            4.07            664         +      Not Applicable
  03/20/2026 05 PM PDT            4.04            652         -      Not Applicable
  03/20/2026 06 PM PDT            4.05            656         +      Not Applicable
  03/20/2026 07 PM PDT            4.04            652         -      Not Applicable
  03/20/2026 08 PM PDT            4.06            660         +      Not Applicable
  03/20/2026 09 PM PDT            4.05            656         -      Not Applicable
  03/20/2026 10 PM PDT            4.04            652         -      Not Applicable
  03/20/2026 11 PM PDT            4.05            656         +      Not Applicable
  03/21/2026 12 AM PDT            4.04            652         -      Not Applicable
  03/21/2026 01 AM PDT            4.04            652         0      Not Applicable
  03/21/2026 02 AM PDT            4.03            648         -      Not Applicable
  03/21/2026 03 AM PDT            4.03            648         0      Not Applicable
  03/21/2026 04 AM PDT            4.01            640         -      Not Applicable
  03/21/2026 05 AM PDT            4.02            644         +      Not Applicable
  03/21/2026 06 AM PDT            4.02            644         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  03/21/2026 07 AM PDT            4.02            644                Not Applicable
  03/21/2026 08 AM PDT            4.02            644         0      Not Applicable
  03/21/2026 09 AM PDT            4.02            644         0      Not Applicable
  03/21/2026 10 AM PDT            4.01            640         -      Not Applicable
  03/21/2026 11 AM PDT            4.01            640         0      Not Applicable
  03/21/2026 12 PM PDT            4.01            640         0      Not Applicable
  03/21/2026 01 PM PDT            4.01            640         0      Not Applicable
  03/21/2026 02 PM PDT            4.01            640         0      Not Applicable
  03/21/2026 03 PM PDT            4.01            640         0      Not Applicable
  03/21/2026 04 PM PDT            4.01            640         0      Not Applicable
  03/21/2026 05 PM PDT            4.01            640         0      Not Applicable
  03/21/2026 06 PM PDT            4.01            640         0      Not Applicable
  03/21/2026 07 PM PDT            4.00            636         -      Not Applicable
  03/21/2026 08 PM PDT            4.00            636         0      Not Applicable
  03/21/2026 09 PM PDT            4.00            636         0      Not Applicable
  03/21/2026 10 PM PDT            4.00            636         0      Not Applicable
  03/21/2026 11 PM PDT            4.00            636         0      Not Applicable
  03/22/2026 12 AM PDT            4.00            636         0      Not Applicable
  03/22/2026 01 AM PDT            4.00            636         0      Not Applicable
  03/22/2026 02 AM PDT            4.00            636         0      Not Applicable
  03/22/2026 03 AM PDT            4.00            636         0      Not Applicable
  03/22/2026 04 AM PDT            4.00            636         0      Not Applicable
  03/22/2026 05 AM PDT            4.00            636         0      Not Applicable
  03/22/2026 06 AM PDT            3.99            632         -      Not Applicable
  03/22/2026 07 AM PDT            3.99            632         0      Not Applicable
  03/22/2026 08 AM PDT            3.99            632         0      Not Applicable
  03/22/2026 09 AM PDT            3.99            632         0      Not Applicable
  03/22/2026 10 AM PDT            3.99            632         0      Not Applicable
  03/22/2026 11 AM PDT            3.99            632         0      Not Applicable
  03/22/2026 12 PM PDT            3.99            632         0      Not Applicable
  03/22/2026 01 PM PDT            3.99            632         0      Not Applicable
  03/22/2026 02 PM PDT            3.98            628         -      Not Applicable
  03/22/2026 03 PM PDT            3.98            628         0      Not Applicable
  03/22/2026 04 PM PDT            3.98            628         0      Not Applicable
  03/22/2026 05 PM PDT            3.98            628         0      Not Applicable
  03/22/2026 06 PM PDT            3.98            628         0      Not Applicable
  03/22/2026 07 PM PDT            3.98            628         0      Not Applicable
  03/22/2026 08 PM PDT            3.98            628         0      Not Applicable
  03/22/2026 09 PM PDT            3.98            628         0      Not Applicable
  03/22/2026 10 PM PDT            3.98            628         0      Not Applicable
  03/22/2026 11 PM PDT            3.98            628         0      Not Applicable
  03/23/2026 12 AM PDT            3.97            624         -      Not Applicable
  03/23/2026 01 AM PDT            3.97            624         0      Not Applicable
  03/23/2026 02 AM PDT            3.97            624         0      Not Applicable
  03/23/2026 03 AM PDT            3.97            624         0      Not Applicable
  03/23/2026 04 AM PDT            3.97            624         0      Not Applicable
  03/23/2026 05 AM PDT            3.97            624         0      Not Applicable
  03/23/2026 06 AM PDT            3.97            624         0      Not Applicable
  03/23/2026 07 AM PDT            3.97            624         0      Not Applicable
  03/23/2026 08 AM PDT            3.97            624         0      Not Applicable
  03/23/2026 09 AM PDT            3.96            620         -      Not Applicable
  03/23/2026 10 AM PDT            3.96            620         0      Not Applicable
  03/23/2026 11 AM PDT            3.96            620         0      Not Applicable
  03/23/2026 12 PM PDT            3.96            620         0      Not Applicable
  03/23/2026 01 PM PDT            3.96            620         0      Not Applicable
  03/23/2026 02 PM PDT            3.96            620         0      Not Applicable
  03/23/2026 03 PM PDT            3.96            620         0      Not Applicable
  03/23/2026 04 PM PDT            3.96            620         0      Not Applicable
  03/23/2026 05 PM PDT            3.96            620         0      Not Applicable
  03/23/2026 06 PM PDT            3.96            620         0      Not Applicable
  03/23/2026 07 PM PDT            3.96            620         0      Not Applicable
  03/23/2026 08 PM PDT            3.95            616         -      Not Applicable
  03/23/2026 09 PM PDT            3.95            616         0      Not Applicable
  03/23/2026 10 PM PDT            3.95            616         0      Not Applicable
  03/23/2026 11 PM PDT            3.95            616         0      Not Applicable
  03/24/2026 12 AM PDT            3.95            616         0      Not Applicable
  03/24/2026 01 AM PDT            3.95            616         0      Not Applicable
  03/24/2026 02 AM PDT            3.95            616         0      Not Applicable
  03/24/2026 03 AM PDT            3.95            616         0      Not Applicable
  03/24/2026 04 AM PDT            3.95            616         0      Not Applicable
  03/24/2026 05 AM PDT            3.94            612         -      Not Applicable
  03/24/2026 06 AM PDT            3.94            612         0      Not Applicable
  03/24/2026 07 AM PDT            3.94            612         0      Not Applicable
  03/24/2026 08 AM PDT            3.94            612         0      Not Applicable
  03/24/2026 09 AM PDT            3.94            612         0      Not Applicable
  03/24/2026 10 AM PDT            3.94            612         0      Not Applicable
  03/24/2026 11 AM PDT            3.94            612         0      Not Applicable
  03/24/2026 12 PM PDT            3.94            612         0      Not Applicable
  03/24/2026 01 PM PDT            3.94            612         0      Not Applicable
  03/24/2026 02 PM PDT            3.94            612         0      Not Applicable
  03/24/2026 03 PM PDT            3.94            612         0      Not Applicable
  03/24/2026 04 PM PDT            3.93            608         -      Not Applicable
  03/24/2026 05 PM PDT            3.93            608         0      Not Applicable
  03/24/2026 06 PM PDT            3.93            608         0      Not Applicable
  03/24/2026 07 PM PDT            3.93            608         0      Not Applicable
  03/24/2026 08 PM PDT            3.93            608         0      Not Applicable
  03/24/2026 09 PM PDT            3.93            608         0      Not Applicable
  03/24/2026 10 PM PDT            3.93            608         0      Not Applicable
  03/24/2026 11 PM PDT            3.93            608         0      Not Applicable
  03/25/2026 12 AM PDT            3.93            608         0      Not Applicable
  03/25/2026 01 AM PDT            3.92            604         -      Not Applicable
  03/25/2026 02 AM PDT            3.92            604         0      Not Applicable
  03/25/2026 03 AM PDT            3.92            604         0      Not Applicable
  03/25/2026 04 AM PDT            3.92            604         0      Not Applicable
  03/25/2026 05 AM PDT            3.92            604         0      Not Applicable
  03/25/2026 06 AM PDT            3.92            604         0      Not Applicable
  03/25/2026 07 AM PDT            3.92            604         0      Not Applicable
  03/25/2026 08 AM PDT            3.92            604         0      Not Applicable
  03/25/2026 09 AM PDT            3.92            604         0      Not Applicable
  03/25/2026 10 AM PDT            3.92            604         0      Not Applicable
  03/25/2026 11 AM PDT            3.92            604         0      Not Applicable
  03/25/2026 12 PM PDT            3.92            604         0      Not Applicable
  03/25/2026 01 PM PDT            3.91            600         -      Not Applicable
  03/25/2026 02 PM PDT            3.91            600         0      Not Applicable
  03/25/2026 03 PM PDT            3.91            600         0      Not Applicable
  03/25/2026 04 PM PDT            3.91            600         0      Not Applicable
  03/25/2026 05 PM PDT            3.91            600         0      Not Applicable
  03/25/2026 06 PM PDT            3.91            600         0      Not Applicable
  03/25/2026 07 PM PDT            3.91            600         0      Not Applicable
  03/25/2026 08 PM PDT            3.91            600         0      Not Applicable
  03/25/2026 09 PM PDT            3.91            600         0      Not Applicable
  03/25/2026 10 PM PDT            3.90            596         -      Not Applicable
  03/25/2026 11 PM PDT            3.90            596         0      Not Applicable
  03/26/2026 12 AM PDT            3.90            596         0      Not Applicable
  03/26/2026 01 AM PDT            3.90            596         0      Not Applicable
  03/26/2026 02 AM PDT            3.90            596         0      Not Applicable
  03/26/2026 03 AM PDT            3.90            596         0      Not Applicable
  03/26/2026 04 AM PDT            3.90            596         0      Not Applicable
  03/26/2026 05 AM PDT            3.90            596         0      Not Applicable
#
# 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.