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 - HAMILTON CITY (HAMC1)
Latitude: 39.75º NLongitude: 122.00º WElevation: 125 Feet
Location: Glenn County in CaliforniaBulletin Group: Upper SacramentoRiver Group: Upper Sacramento
Issuance Time: Dec 13 2025 at 6:55 AM PSTNext Issuance: Dec 14 2025 at 9:00 AM PST
Action/Monitor: 142.0 FeetMinor Flood: 147.0 FeetModerate Flood: 149.2 FeetMajor Flood: 150.2 Feet


# Tabular Observed and Forecast Hydrograph Information
#
# Location: Sacramento River - Hamilton City (HAMC1)
#
# File Generation Time:  12/13/2025 at 06:55 AM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  12/09/2025 at 02:00 AM PST
# Maximum Observed Stage:                       127.60 Feet
# Maximum Observed Flow:                        4531 cfs
#
# Earliest Date & Time of Maximum Forecast:     12/18/2025 at 03:00 AM PST
# Maximum Forecast Stage:                       128.56 Feet
# Maximum Forecast Flow:                        6882 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  12/08/2025 06 AM PST          127.60           4531                        Normal
  12/08/2025 07 AM PST          127.59           4509         -              Normal
  12/08/2025 08 AM PST          127.59           4509         0              Normal
  12/08/2025 09 AM PST          127.59           4509         0              Normal
  12/08/2025 10 AM PST          127.59           4509         0              Normal
  12/08/2025 11 AM PST          127.59           4509         0              Normal
  12/08/2025 12 PM PST          127.59           4509         0              Normal
  12/08/2025 01 PM PST          127.59           4509         0              Normal
  12/08/2025 02 PM PST          127.59           4509         0              Normal
  12/08/2025 03 PM PST          127.58           4486         -              Normal
  12/08/2025 04 PM PST          127.59           4509         +              Normal
  12/08/2025 05 PM PST          127.59           4509         0              Normal
  12/08/2025 06 PM PST          127.59           4509         0              Normal
  12/08/2025 07 PM PST          127.59           4509         0              Normal
  12/08/2025 08 PM PST          127.59           4509         0              Normal
  12/08/2025 09 PM PST          127.59           4509         0              Normal
  12/08/2025 10 PM PST          127.59           4509         0              Normal
  12/08/2025 11 PM PST          127.59           4509         0              Normal
  12/09/2025 12 AM PST          127.59           4509         0              Normal
  12/09/2025 01 AM PST          127.59           4509         0              Normal
  12/09/2025 02 AM PST          127.60           4531         +              Normal
  12/09/2025 03 AM PST          127.59           4509         -              Normal
  12/09/2025 04 AM PST          127.59           4509         0              Normal
  12/09/2025 05 AM PST          127.59           4509         0              Normal
  12/09/2025 06 AM PST          127.59           4509         0              Normal
  12/09/2025 07 AM PST          127.58           4486         -              Normal
  12/09/2025 08 AM PST          127.58           4486         0              Normal
  12/09/2025 09 AM PST          127.58           4486         0              Normal
  12/09/2025 10 AM PST          127.58           4486         0              Normal
  12/09/2025 11 AM PST          127.58           4486         0              Normal
  12/09/2025 12 PM PST          127.58           4486         0              Normal
  12/09/2025 01 PM PST          127.59           4509         +              Normal
  12/09/2025 02 PM PST          127.59           4509         0              Normal
  12/09/2025 03 PM PST          127.58           4486         -              Normal
  12/09/2025 04 PM PST          127.58           4486         0              Normal
  12/09/2025 05 PM PST          127.58           4486         0              Normal
  12/09/2025 06 PM PST          127.58           4486         0              Normal
  12/09/2025 07 PM PST          127.58           4486         0              Normal
  12/09/2025 08 PM PST          127.58           4486         0              Normal
  12/09/2025 09 PM PST          127.58           4486         0              Normal
  12/09/2025 10 PM PST          127.59           4509         +              Normal
  12/09/2025 11 PM PST          127.59           4509         0              Normal
  12/10/2025 12 AM PST          127.58           4486         -              Normal
  12/10/2025 01 AM PST          127.59           4509         +              Normal
  12/10/2025 02 AM PST          127.58           4486         -              Normal
  12/10/2025 03 AM PST          127.58           4486         0              Normal
  12/10/2025 04 AM PST          127.58           4486         0              Normal
  12/10/2025 05 AM PST          127.58           4486         0              Normal
  12/10/2025 06 AM PST          127.58           4486         0              Normal
  12/10/2025 07 AM PST          127.57           4464         -              Normal
  12/10/2025 08 AM PST          127.57           4464         0              Normal
  12/10/2025 09 AM PST          127.57           4464         0              Normal
  12/10/2025 10 AM PST          127.57           4464         0              Normal
  12/10/2025 11 AM PST          127.57           4464         0              Normal
  12/10/2025 12 PM PST          127.57           4464         0              Normal
  12/10/2025 01 PM PST          127.57           4464         0              Normal
  12/10/2025 02 PM PST          127.57           4464         0              Normal
  12/10/2025 03 PM PST          127.57           4464         0              Normal
  12/10/2025 04 PM PST          127.57           4464         0              Normal
  12/10/2025 05 PM PST          127.57           4464         0              Normal
  12/10/2025 06 PM PST          127.57           4464         0              Normal
  12/10/2025 07 PM PST          127.58           4486         +              Normal
  12/10/2025 08 PM PST          127.57           4464         -              Normal
  12/10/2025 09 PM PST          127.57           4464         0              Normal
  12/10/2025 10 PM PST          127.58           4486         +              Normal
  12/10/2025 11 PM PST          127.57           4464         -              Normal
  12/11/2025 12 AM PST          127.57           4464         0              Normal
  12/11/2025 01 AM PST          127.57           4464         0              Normal
  12/11/2025 02 AM PST          127.57           4464         0              Normal
  12/11/2025 03 AM PST          127.57           4464         0              Normal
  12/11/2025 04 AM PST          127.57           4464         0              Normal
  12/11/2025 05 AM PST          127.56           4442         -              Normal
  12/11/2025 06 AM PST          127.57           4464         +              Normal
  12/11/2025 07 AM PST          127.57           4464         0              Normal
  12/11/2025 08 AM PST          127.57           4464         0              Normal
  12/11/2025 09 AM PST          127.57           4464         0              Normal
  12/11/2025 10 AM PST          127.57           4464         0              Normal
  12/11/2025 11 AM PST          127.57           4464         0              Normal
  12/11/2025 12 PM PST          127.57           4464         0              Normal
  12/11/2025 01 PM PST          127.57           4464         0              Normal
  12/11/2025 02 PM PST          127.57           4464         0              Normal
  12/11/2025 03 PM PST          127.57           4464         0              Normal
  12/11/2025 04 PM PST          127.57           4464         0              Normal
  12/11/2025 05 PM PST          127.57           4464         0              Normal
  12/11/2025 06 PM PST          127.57           4464         0              Normal
  12/11/2025 07 PM PST          127.57           4464         0              Normal
  12/11/2025 08 PM PST          127.57           4464         0              Normal
  12/11/2025 09 PM PST          127.57           4464         0              Normal
  12/11/2025 10 PM PST          127.57           4464         0              Normal
  12/11/2025 11 PM PST          127.57           4464         0              Normal
  12/12/2025 12 AM PST          127.56           4442         -              Normal
  12/12/2025 01 AM PST          127.56           4442         0              Normal
  12/12/2025 02 AM PST          127.56           4442         0              Normal
  12/12/2025 03 AM PST          127.56           4442         0              Normal
  12/12/2025 04 AM PST          127.56           4442         0              Normal
  12/12/2025 05 AM PST          127.56           4442         0              Normal
  12/12/2025 06 AM PST          127.56           4442         0              Normal
  12/12/2025 07 AM PST          127.56           4442         0              Normal
  12/12/2025 08 AM PST          127.56           4442         0              Normal
  12/12/2025 09 AM PST          127.56           4442         0              Normal
  12/12/2025 10 AM PST          127.56           4442         0              Normal
  12/12/2025 11 AM PST          127.56           4442         0              Normal
  12/12/2025 12 PM PST          127.56           4442         0              Normal
  12/12/2025 01 PM PST          127.54           4398         -              Normal
  12/12/2025 02 PM PST          127.55           4420         +              Normal
  12/12/2025 03 PM PST          127.55           4420         0              Normal
  12/12/2025 04 PM PST          127.56           4442         +              Normal
  12/12/2025 05 PM PST          127.56           4442         0              Normal
  12/12/2025 06 PM PST          127.56           4442         0              Normal
  12/12/2025 07 PM PST          127.56           4442         0              Normal
  12/12/2025 08 PM PST          127.56           4442         0              Normal
  12/12/2025 09 PM PST          127.55           4420         -              Normal
  12/12/2025 10 PM PST          127.55           4420         0              Normal
  12/12/2025 11 PM PST          127.55           4420         0              Normal
  12/13/2025 12 AM PST          127.55           4420         0              Normal
  12/13/2025 01 AM PST          127.55           4420         0              Normal
  12/13/2025 02 AM PST          127.55           4420         0              Normal
  12/13/2025 03 AM PST          127.55           4420         0              Normal
  12/13/2025 04 AM PST          127.55           4420         0              Normal
  12/13/2025 05 AM PST          127.55           4420         0              Normal
  12/13/2025 06 AM PST          127.55           4420         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  12/13/2025 07 AM PST          127.54           4398                        Normal
  12/13/2025 08 AM PST          127.54           4398         0              Normal
  12/13/2025 09 AM PST          127.55           4420         +              Normal
  12/13/2025 10 AM PST          127.55           4420         0              Normal
  12/13/2025 11 AM PST          127.55           4420         0              Normal
  12/13/2025 12 PM PST          127.55           4420         0              Normal
  12/13/2025 01 PM PST          127.55           4420         0              Normal
  12/13/2025 02 PM PST          127.55           4420         0              Normal
  12/13/2025 03 PM PST          127.55           4420         0              Normal
  12/13/2025 04 PM PST          127.55           4420         0              Normal
  12/13/2025 05 PM PST          127.54           4398         -              Normal
  12/13/2025 06 PM PST          127.54           4398         0              Normal
  12/13/2025 07 PM PST          127.54           4398         0              Normal
  12/13/2025 08 PM PST          127.54           4398         0              Normal
  12/13/2025 09 PM PST          127.54           4398         0              Normal
  12/13/2025 10 PM PST          127.54           4398         0              Normal
  12/13/2025 11 PM PST          127.54           4398         0              Normal
  12/14/2025 12 AM PST          127.54           4398         0              Normal
  12/14/2025 01 AM PST          127.54           4398         0              Normal
  12/14/2025 02 AM PST          127.54           4398         0              Normal
  12/14/2025 03 AM PST          127.54           4398         0              Normal
  12/14/2025 04 AM PST          127.54           4398         0              Normal
  12/14/2025 05 AM PST          127.54           4398         0              Normal
  12/14/2025 06 AM PST          127.54           4398         0              Normal
  12/14/2025 07 AM PST          127.54           4398         0              Normal
  12/14/2025 08 AM PST          127.54           4398         0              Normal
  12/14/2025 09 AM PST          127.54           4398         0              Normal
  12/14/2025 10 AM PST          127.54           4398         0              Normal
  12/14/2025 11 AM PST          127.54           4398         0              Normal
  12/14/2025 12 PM PST          127.54           4398         0              Normal
  12/14/2025 01 PM PST          127.54           4398         0              Normal
  12/14/2025 02 PM PST          127.54           4398         0              Normal
  12/14/2025 03 PM PST          127.54           4398         0              Normal
  12/14/2025 04 PM PST          127.53           4376         -              Normal
  12/14/2025 05 PM PST          127.53           4376         0              Normal
  12/14/2025 06 PM PST          127.53           4376         0              Normal
  12/14/2025 07 PM PST          127.53           4376         0              Normal
  12/14/2025 08 PM PST          127.53           4376         0              Normal
  12/14/2025 09 PM PST          127.53           4376         0              Normal
  12/14/2025 10 PM PST          127.53           4376         0              Normal
  12/14/2025 11 PM PST          127.53           4376         0              Normal
  12/15/2025 12 AM PST          127.53           4376         0              Normal
  12/15/2025 01 AM PST          127.53           4376         0              Normal
  12/15/2025 02 AM PST          127.53           4376         0              Normal
  12/15/2025 03 AM PST          127.53           4376         0              Normal
  12/15/2025 04 AM PST          127.53           4376         0              Normal
  12/15/2025 05 AM PST          127.53           4376         0              Normal
  12/15/2025 06 AM PST          127.53           4376         0              Normal
  12/15/2025 07 AM PST          127.53           4376         0              Normal
  12/15/2025 08 AM PST          127.53           4376         0              Normal
  12/15/2025 09 AM PST          127.53           4376         0              Normal
  12/15/2025 10 AM PST          127.53           4376         0              Normal
  12/15/2025 11 AM PST          127.53           4376         0              Normal
  12/15/2025 12 PM PST          127.53           4376         0              Normal
  12/15/2025 01 PM PST          127.53           4376         0              Normal
  12/15/2025 02 PM PST          127.53           4376         0              Normal
  12/15/2025 03 PM PST          127.53           4376         0              Normal
  12/15/2025 04 PM PST          127.53           4376         0              Normal
  12/15/2025 05 PM PST          127.53           4376         0              Normal
  12/15/2025 06 PM PST          127.53           4376         0              Normal
  12/15/2025 07 PM PST          127.53           4376         0              Normal
  12/15/2025 08 PM PST          127.53           4376         0              Normal
  12/15/2025 09 PM PST          127.53           4376         0              Normal
  12/15/2025 10 PM PST          127.53           4376         0              Normal
  12/15/2025 11 PM PST          127.53           4376         0              Normal
  12/16/2025 12 AM PST          127.53           4376         0              Normal
  12/16/2025 01 AM PST          127.53           4376         0              Normal
  12/16/2025 02 AM PST          127.53           4376         0              Normal
  12/16/2025 03 AM PST          127.53           4376         0              Normal
  12/16/2025 04 AM PST          127.53           4376         0              Normal
  12/16/2025 05 AM PST          127.53           4376         0              Normal
  12/16/2025 06 AM PST          127.53           4376         0              Normal
  12/16/2025 07 AM PST          127.53           4376         0              Normal
  12/16/2025 08 AM PST          127.53           4376         0              Normal
  12/16/2025 09 AM PST          127.53           4376         0              Normal
  12/16/2025 10 AM PST          127.53           4376         0              Normal
  12/16/2025 11 AM PST          127.53           4376         0              Normal
  12/16/2025 12 PM PST          127.53           4376         0              Normal
  12/16/2025 01 PM PST          127.53           4376         0              Normal
  12/16/2025 02 PM PST          127.53           4376         0              Normal
  12/16/2025 03 PM PST          127.53           4376         0              Normal
  12/16/2025 04 PM PST          127.54           4398         +              Normal
  12/16/2025 05 PM PST          127.55           4420         +              Normal
  12/16/2025 06 PM PST          127.56           4442         +              Normal
  12/16/2025 07 PM PST          127.56           4442         0              Normal
  12/16/2025 08 PM PST          127.58           4486         +              Normal
  12/16/2025 09 PM PST          127.59           4509         +              Normal
  12/16/2025 10 PM PST          127.61           4553         +              Normal
  12/16/2025 11 PM PST          127.63           4596         +              Normal
  12/17/2025 12 AM PST          127.66           4662         +              Normal
  12/17/2025 01 AM PST          127.69           4729         +              Normal
  12/17/2025 02 AM PST          127.72           4795         +              Normal
  12/17/2025 03 AM PST          127.75           4861         +              Normal
  12/17/2025 04 AM PST          127.78           4928         +              Normal
  12/17/2025 05 AM PST          127.82           5017         +              Normal
  12/17/2025 06 AM PST          127.85           5083         +              Normal
  12/17/2025 07 AM PST          127.89           5173         +              Normal
  12/17/2025 08 AM PST          127.92           5240         +              Normal
  12/17/2025 09 AM PST          127.95           5307         +              Normal
  12/17/2025 10 AM PST          127.98           5374         +              Normal
  12/17/2025 11 AM PST          128.01           5445         +              Normal
  12/17/2025 12 PM PST          128.03           5496         +              Normal
  12/17/2025 01 PM PST          128.05           5548         +              Normal
  12/17/2025 02 PM PST          128.07           5600         +              Normal
  12/17/2025 03 PM PST          128.10           5679         +              Normal
  12/17/2025 04 PM PST          128.12           5730         +              Normal
  12/17/2025 05 PM PST          128.15           5808         +              Normal
  12/17/2025 06 PM PST          128.18           5886         +              Normal
  12/17/2025 07 PM PST          128.22           5990         +              Normal
  12/17/2025 08 PM PST          128.26           6094         +              Normal
  12/17/2025 09 PM PST          128.31           6226         +              Normal
  12/17/2025 10 PM PST          128.38           6409         +              Normal
  12/17/2025 11 PM PST          128.44           6566         +              Normal
  12/18/2025 12 AM PST          128.49           6698         +              Normal
  12/18/2025 01 AM PST          128.53           6803         +              Normal
  12/18/2025 02 AM PST          128.55           6856         +              Normal
  12/18/2025 03 AM PST          128.56           6882         +              Normal
  12/18/2025 04 AM PST          128.55           6856         -              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.