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: May 18 2026 at 7:35 AM PDTNext Issuance: May 19 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:  05/18/2026 at 07:37 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/13/2026 at 11:00 AM PDT
# Maximum Observed Stage:                       3.06 Feet
# Maximum Observed Flow:                        337 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/18/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       2.79 Feet
# Maximum Forecast Flow:                        263 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/13/2026 07 AM PDT            3.06            337                Not Applicable
  05/13/2026 08 AM PDT            3.06            337         0      Not Applicable
  05/13/2026 09 AM PDT            3.05            334         -      Not Applicable
  05/13/2026 10 AM PDT            3.06            337         +      Not Applicable
  05/13/2026 11 AM PDT            3.06            337         0      Not Applicable
  05/13/2026 12 PM PDT            3.05            334         -      Not Applicable
  05/13/2026 01 PM PDT            3.05            334         0      Not Applicable
  05/13/2026 02 PM PDT            3.04            332         -      Not Applicable
  05/13/2026 03 PM PDT            3.04            332         0      Not Applicable
  05/13/2026 04 PM PDT            3.03            329         -      Not Applicable
  05/13/2026 05 PM PDT            3.03            329         0      Not Applicable
  05/13/2026 06 PM PDT            3.03            329         0      Not Applicable
  05/13/2026 07 PM PDT            3.02            326         -      Not Applicable
  05/13/2026 08 PM PDT            3.01            323         -      Not Applicable
  05/13/2026 09 PM PDT            3.01            323         0      Not Applicable
  05/13/2026 10 PM PDT            3.01            323         0      Not Applicable
  05/13/2026 11 PM PDT            3.02            326         +      Not Applicable
  05/14/2026 12 AM PDT            3.00            320         -      Not Applicable
  05/14/2026 01 AM PDT            3.02            326         +      Not Applicable
  05/14/2026 02 AM PDT            2.99            317         -      Not Applicable
  05/14/2026 03 AM PDT            3.00            320         +      Not Applicable
  05/14/2026 04 AM PDT            3.00            320         0      Not Applicable
  05/14/2026 05 AM PDT            2.99            317         -      Not Applicable
  05/14/2026 06 AM PDT            3.00            320         +      Not Applicable
  05/14/2026 07 AM PDT            2.98            314         -      Not Applicable
  05/14/2026 08 AM PDT            3.00            320         +      Not Applicable
  05/14/2026 09 AM PDT            2.99            317         -      Not Applicable
  05/14/2026 10 AM PDT            2.98            314         -      Not Applicable
  05/14/2026 11 AM PDT            2.98            314         0      Not Applicable
  05/14/2026 12 PM PDT            2.95            306         -      Not Applicable
  05/14/2026 01 PM PDT            2.95            306         0      Not Applicable
  05/14/2026 02 PM PDT            2.95            306         0      Not Applicable
  05/14/2026 03 PM PDT            2.95            306         0      Not Applicable
  05/14/2026 04 PM PDT            2.94            303         -      Not Applicable
  05/14/2026 05 PM PDT            2.94            303         0      Not Applicable
  05/14/2026 06 PM PDT            2.93            300         -      Not Applicable
  05/14/2026 07 PM PDT            2.93            300         0      Not Applicable
  05/14/2026 08 PM PDT            2.92            298         -      Not Applicable
  05/14/2026 09 PM PDT            2.92            298         0      Not Applicable
  05/14/2026 10 PM PDT            2.92            298         0      Not Applicable
  05/14/2026 11 PM PDT            2.92            298         0      Not Applicable
  05/15/2026 12 AM PDT            2.91            295         -      Not Applicable
  05/15/2026 01 AM PDT            2.90            292         -      Not Applicable
  05/15/2026 02 AM PDT            2.90            292         0      Not Applicable
  05/15/2026 03 AM PDT            2.90            292         0      Not Applicable
  05/15/2026 04 AM PDT            2.90            292         0      Not Applicable
  05/15/2026 05 AM PDT            2.88            287         -      Not Applicable
  05/15/2026 06 AM PDT            2.90            292         +      Not Applicable
  05/15/2026 07 AM PDT            2.90            292         0      Not Applicable
  05/15/2026 08 AM PDT            2.89            290         -      Not Applicable
  05/15/2026 09 AM PDT            2.89            290         0      Not Applicable
  05/15/2026 10 AM PDT            2.89            290         0      Not Applicable
  05/15/2026 11 AM PDT            2.89            290         0      Not Applicable
  05/15/2026 12 PM PDT            2.91            295         +      Not Applicable
  05/15/2026 01 PM PDT            2.91            295         0      Not Applicable
  05/15/2026 02 PM PDT            2.91            295         0      Not Applicable
  05/15/2026 03 PM PDT            2.91            295         0      Not Applicable
  05/15/2026 04 PM PDT            2.88            287         -      Not Applicable
  05/15/2026 05 PM PDT            2.88            287         0      Not Applicable
  05/15/2026 06 PM PDT            2.88            287         0      Not Applicable
  05/15/2026 07 PM PDT            2.88            287         0      Not Applicable
  05/15/2026 08 PM PDT            2.87            284         -      Not Applicable
  05/15/2026 09 PM PDT            2.85            279         -      Not Applicable
  05/15/2026 10 PM PDT            2.84            276         -      Not Applicable
  05/15/2026 11 PM PDT            2.84            276         0      Not Applicable
  05/16/2026 12 AM PDT            2.83            274         -      Not Applicable
  05/16/2026 01 AM PDT            2.84            276         +      Not Applicable
  05/16/2026 02 AM PDT            2.83            274         -      Not Applicable
  05/16/2026 03 AM PDT            2.82            271         -      Not Applicable
  05/16/2026 04 AM PDT            2.83            274         +      Not Applicable
  05/16/2026 05 AM PDT            2.84            276         +      Not Applicable
  05/16/2026 06 AM PDT            2.85            279         +      Not Applicable
  05/16/2026 07 AM PDT            2.84            276         -      Not Applicable
  05/16/2026 08 AM PDT            2.83            274         -      Not Applicable
  05/16/2026 09 AM PDT            2.84            276         +      Not Applicable
  05/16/2026 10 AM PDT            2.83            274         -      Not Applicable
  05/16/2026 11 AM PDT            2.83            274         0      Not Applicable
  05/16/2026 12 PM PDT            2.83            274         0      Not Applicable
  05/16/2026 01 PM PDT            2.82            271         -      Not Applicable
  05/16/2026 02 PM PDT            2.81            268         -      Not Applicable
  05/16/2026 03 PM PDT            2.81            268         0      Not Applicable
  05/16/2026 04 PM PDT            2.81            268         0      Not Applicable
  05/16/2026 05 PM PDT            2.81            268         0      Not Applicable
  05/16/2026 06 PM PDT            2.81            268         0      Not Applicable
  05/16/2026 07 PM PDT            2.79            263         -      Not Applicable
  05/16/2026 08 PM PDT            2.80            266         +      Not Applicable
  05/16/2026 09 PM PDT            2.78            261         -      Not Applicable
  05/16/2026 10 PM PDT            2.79            263         +      Not Applicable
  05/16/2026 11 PM PDT            2.80            266         +      Not Applicable
  05/17/2026 12 AM PDT            2.79            263         -      Not Applicable
  05/17/2026 01 AM PDT            2.79            263         0      Not Applicable
  05/17/2026 02 AM PDT            2.79            263         0      Not Applicable
  05/17/2026 03 AM PDT            2.78            261         -      Not Applicable
  05/17/2026 04 AM PDT            2.78            261         0      Not Applicable
  05/17/2026 05 AM PDT            2.79            263         +      Not Applicable
  05/17/2026 06 AM PDT            2.79            263         0      Not Applicable
  05/17/2026 07 AM PDT            2.80            266         +      Not Applicable
  05/17/2026 08 AM PDT            2.80            266         0      Not Applicable
  05/17/2026 09 AM PDT            2.80            266         0      Not Applicable
  05/17/2026 10 AM PDT            2.79            263         -      Not Applicable
  05/17/2026 11 AM PDT            2.81            268         +      Not Applicable
  05/17/2026 12 PM PDT            2.80            266         -      Not Applicable
  05/17/2026 01 PM PDT            2.81            268         +      Not Applicable
  05/17/2026 02 PM PDT            2.81            268         0      Not Applicable
  05/17/2026 03 PM PDT            2.81            268         0      Not Applicable
  05/17/2026 04 PM PDT            2.82            271         +      Not Applicable
  05/17/2026 05 PM PDT            2.80            266         -      Not Applicable
  05/17/2026 06 PM PDT            2.81            268         +      Not Applicable
  05/17/2026 07 PM PDT            2.81            268         0      Not Applicable
  05/17/2026 08 PM PDT            2.80            266         -      Not Applicable
  05/17/2026 09 PM PDT            2.80            266         0      Not Applicable
  05/17/2026 10 PM PDT            2.79            263         -      Not Applicable
  05/17/2026 11 PM PDT            2.80            266         +      Not Applicable
  05/18/2026 12 AM PDT            2.80            266         0      Not Applicable
  05/18/2026 01 AM PDT            2.79            263         -      Not Applicable
  05/18/2026 02 AM PDT            2.80            266         +      Not Applicable
  05/18/2026 03 AM PDT            2.80            266         0      Not Applicable
  05/18/2026 04 AM PDT            2.80            266         0      Not Applicable
  05/18/2026 05 AM PDT            2.79            263         -      Not Applicable
  05/18/2026 06 AM PDT            2.79            263         0      Not Applicable
  05/18/2026 07 AM PDT            2.79            263         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/18/2026 08 AM PDT            2.79            263                Not Applicable
  05/18/2026 09 AM PDT            2.79            263         0      Not Applicable
  05/18/2026 10 AM PDT            2.79            263         0      Not Applicable
  05/18/2026 11 AM PDT            2.79            263         0      Not Applicable
  05/18/2026 12 PM PDT            2.79            263         0      Not Applicable
  05/18/2026 01 PM PDT            2.79            263         0      Not Applicable
  05/18/2026 02 PM PDT            2.79            263         0      Not Applicable
  05/18/2026 03 PM PDT            2.79            263         0      Not Applicable
  05/18/2026 04 PM PDT            2.79            263         0      Not Applicable
  05/18/2026 05 PM PDT            2.79            263         0      Not Applicable
  05/18/2026 06 PM PDT            2.79            263         0      Not Applicable
  05/18/2026 07 PM PDT            2.79            263         0      Not Applicable
  05/18/2026 08 PM PDT            2.79            263         0      Not Applicable
  05/18/2026 09 PM PDT            2.79            263         0      Not Applicable
  05/18/2026 10 PM PDT            2.79            263         0      Not Applicable
  05/18/2026 11 PM PDT            2.79            263         0      Not Applicable
  05/19/2026 12 AM PDT            2.79            263         0      Not Applicable
  05/19/2026 01 AM PDT            2.79            263         0      Not Applicable
  05/19/2026 02 AM PDT            2.79            263         0      Not Applicable
  05/19/2026 03 AM PDT            2.79            263         0      Not Applicable
  05/19/2026 04 AM PDT            2.78            261         -      Not Applicable
  05/19/2026 05 AM PDT            2.78            261         0      Not Applicable
  05/19/2026 06 AM PDT            2.78            261         0      Not Applicable
  05/19/2026 07 AM PDT            2.78            261         0      Not Applicable
  05/19/2026 08 AM PDT            2.78            261         0      Not Applicable
  05/19/2026 09 AM PDT            2.78            261         0      Not Applicable
  05/19/2026 10 AM PDT            2.78            261         0      Not Applicable
  05/19/2026 11 AM PDT            2.78            261         0      Not Applicable
  05/19/2026 12 PM PDT            2.78            261         0      Not Applicable
  05/19/2026 01 PM PDT            2.78            261         0      Not Applicable
  05/19/2026 02 PM PDT            2.78            261         0      Not Applicable
  05/19/2026 03 PM PDT            2.78            261         0      Not Applicable
  05/19/2026 04 PM PDT            2.78            261         0      Not Applicable
  05/19/2026 05 PM PDT            2.78            261         0      Not Applicable
  05/19/2026 06 PM PDT            2.78            261         0      Not Applicable
  05/19/2026 07 PM PDT            2.78            261         0      Not Applicable
  05/19/2026 08 PM PDT            2.78            261         0      Not Applicable
  05/19/2026 09 PM PDT            2.78            261         0      Not Applicable
  05/19/2026 10 PM PDT            2.78            261         0      Not Applicable
  05/19/2026 11 PM PDT            2.78            261         0      Not Applicable
  05/20/2026 12 AM PDT            2.78            261         0      Not Applicable
  05/20/2026 01 AM PDT            2.78            261         0      Not Applicable
  05/20/2026 02 AM PDT            2.78            261         0      Not Applicable
  05/20/2026 03 AM PDT            2.78            261         0      Not Applicable
  05/20/2026 04 AM PDT            2.78            261         0      Not Applicable
  05/20/2026 05 AM PDT            2.78            261         0      Not Applicable
  05/20/2026 06 AM PDT            2.78            261         0      Not Applicable
  05/20/2026 07 AM PDT            2.78            261         0      Not Applicable
  05/20/2026 08 AM PDT            2.78            261         0      Not Applicable
  05/20/2026 09 AM PDT            2.78            261         0      Not Applicable
  05/20/2026 10 AM PDT            2.78            261         0      Not Applicable
  05/20/2026 11 AM PDT            2.78            261         0      Not Applicable
  05/20/2026 12 PM PDT            2.78            261         0      Not Applicable
  05/20/2026 01 PM PDT            2.78            261         0      Not Applicable
  05/20/2026 02 PM PDT            2.77            258         -      Not Applicable
  05/20/2026 03 PM PDT            2.77            258         0      Not Applicable
  05/20/2026 04 PM PDT            2.77            258         0      Not Applicable
  05/20/2026 05 PM PDT            2.77            258         0      Not Applicable
  05/20/2026 06 PM PDT            2.77            258         0      Not Applicable
  05/20/2026 07 PM PDT            2.77            258         0      Not Applicable
  05/20/2026 08 PM PDT            2.77            258         0      Not Applicable
  05/20/2026 09 PM PDT            2.77            258         0      Not Applicable
  05/20/2026 10 PM PDT            2.77            258         0      Not Applicable
  05/20/2026 11 PM PDT            2.77            258         0      Not Applicable
  05/21/2026 12 AM PDT            2.77            258         0      Not Applicable
  05/21/2026 01 AM PDT            2.77            258         0      Not Applicable
  05/21/2026 02 AM PDT            2.77            258         0      Not Applicable
  05/21/2026 03 AM PDT            2.77            258         0      Not Applicable
  05/21/2026 04 AM PDT            2.77            258         0      Not Applicable
  05/21/2026 05 AM PDT            2.77            258         0      Not Applicable
  05/21/2026 06 AM PDT            2.77            258         0      Not Applicable
  05/21/2026 07 AM PDT            2.77            258         0      Not Applicable
  05/21/2026 08 AM PDT            2.77            258         0      Not Applicable
  05/21/2026 09 AM PDT            2.77            258         0      Not Applicable
  05/21/2026 10 AM PDT            2.77            258         0      Not Applicable
  05/21/2026 11 AM PDT            2.77            258         0      Not Applicable
  05/21/2026 12 PM PDT            2.77            258         0      Not Applicable
  05/21/2026 01 PM PDT            2.77            258         0      Not Applicable
  05/21/2026 02 PM PDT            2.77            258         0      Not Applicable
  05/21/2026 03 PM PDT            2.77            258         0      Not Applicable
  05/21/2026 04 PM PDT            2.77            258         0      Not Applicable
  05/21/2026 05 PM PDT            2.77            258         0      Not Applicable
  05/21/2026 06 PM PDT            2.77            258         0      Not Applicable
  05/21/2026 07 PM PDT            2.77            258         0      Not Applicable
  05/21/2026 08 PM PDT            2.77            258         0      Not Applicable
  05/21/2026 09 PM PDT            2.77            258         0      Not Applicable
  05/21/2026 10 PM PDT            2.77            258         0      Not Applicable
  05/21/2026 11 PM PDT            2.77            258         0      Not Applicable
  05/22/2026 12 AM PDT            2.77            258         0      Not Applicable
  05/22/2026 01 AM PDT            2.77            258         0      Not Applicable
  05/22/2026 02 AM PDT            2.77            258         0      Not Applicable
  05/22/2026 03 AM PDT            2.77            258         0      Not Applicable
  05/22/2026 04 AM PDT            2.77            258         0      Not Applicable
  05/22/2026 05 AM PDT            2.77            258         0      Not Applicable
  05/22/2026 06 AM PDT            2.77            258         0      Not Applicable
  05/22/2026 07 AM PDT            2.77            258         0      Not Applicable
  05/22/2026 08 AM PDT            2.77            258         0      Not Applicable
  05/22/2026 09 AM PDT            2.77            258         0      Not Applicable
  05/22/2026 10 AM PDT            2.77            258         0      Not Applicable
  05/22/2026 11 AM PDT            2.76            255         -      Not Applicable
  05/22/2026 12 PM PDT            2.76            255         0      Not Applicable
  05/22/2026 01 PM PDT            2.76            255         0      Not Applicable
  05/22/2026 02 PM PDT            2.76            255         0      Not Applicable
  05/22/2026 03 PM PDT            2.76            255         0      Not Applicable
  05/22/2026 04 PM PDT            2.76            255         0      Not Applicable
  05/22/2026 05 PM PDT            2.76            255         0      Not Applicable
  05/22/2026 06 PM PDT            2.76            255         0      Not Applicable
  05/22/2026 07 PM PDT            2.76            255         0      Not Applicable
  05/22/2026 08 PM PDT            2.76            255         0      Not Applicable
  05/22/2026 09 PM PDT            2.76            255         0      Not Applicable
  05/22/2026 10 PM PDT            2.76            255         0      Not Applicable
  05/22/2026 11 PM PDT            2.76            255         0      Not Applicable
  05/23/2026 12 AM PDT            2.76            255         0      Not Applicable
  05/23/2026 01 AM PDT            2.76            255         0      Not Applicable
  05/23/2026 02 AM PDT            2.76            255         0      Not Applicable
  05/23/2026 03 AM PDT            2.76            255         0      Not Applicable
  05/23/2026 04 AM PDT            2.76            255         0      Not Applicable
  05/23/2026 05 AM PDT            2.76            255         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.