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 FeetForecast Type: Official Location
Location: Glenn County in CaliforniaBulletin Group: Upper SacramentoRiver Group: Upper Sacramento
Issuance Time: Aug 28 2026 at 7:34 AM PDTNext Issuance: Aug 29 2026 at 9:00 AM PDT
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:  08/28/2026 at 07:35 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  08/26/2026 at 02:00 PM PDT
# Maximum Observed Stage:                       128.87 Feet
# Maximum Observed Flow:                        7543 cfs
#
# Earliest Date & Time of Maximum Forecast:     08/28/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       128.61 Feet
# Maximum Forecast Flow:                        6901 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  08/23/2026 07 AM PDT          128.73           7196                        Normal
  08/23/2026 08 AM PDT          128.72           7172         -              Normal
  08/23/2026 09 AM PDT          128.73           7196         +              Normal
  08/23/2026 10 AM PDT          128.73           7196         0              Normal
  08/23/2026 11 AM PDT          128.73           7196         0              Normal
  08/23/2026 12 PM PDT          128.73           7196         0              Normal
  08/23/2026 01 PM PDT          128.72           7172         -              Normal
  08/23/2026 02 PM PDT          128.73           7196         +              Normal
  08/23/2026 03 PM PDT          128.73           7196         0              Normal
  08/23/2026 04 PM PDT          128.75           7245         +              Normal
  08/23/2026 05 PM PDT          128.76           7270         +              Normal
  08/23/2026 06 PM PDT          128.76           7270         0              Normal
  08/23/2026 07 PM PDT          128.76           7270         0              Normal
  08/23/2026 08 PM PDT          128.76           7270         0              Normal
  08/23/2026 09 PM PDT          128.76           7270         0              Normal
  08/23/2026 10 PM PDT          128.75           7245         -              Normal
  08/23/2026 11 PM PDT          128.75           7245         0              Normal
  08/24/2026 12 AM PDT          128.75           7245         0              Normal
  08/24/2026 01 AM PDT          128.75           7245         0              Normal
  08/24/2026 02 AM PDT          128.76           7270         +              Normal
  08/24/2026 03 AM PDT          128.76           7270         0              Normal
  08/24/2026 04 AM PDT          128.76           7270         0              Normal
  08/24/2026 05 AM PDT          128.77           7295         +              Normal
  08/24/2026 06 AM PDT          128.77           7295         0              Normal
  08/24/2026 07 AM PDT          128.78           7320         +              Normal
  08/24/2026 08 AM PDT          128.79           7345         +              Normal
  08/24/2026 09 AM PDT          128.79           7345         0              Normal
  08/24/2026 10 AM PDT          128.79           7345         0              Normal
  08/24/2026 11 AM PDT          128.80           7370         +              Normal
  08/24/2026 12 PM PDT          128.80           7370         0              Normal
  08/24/2026 01 PM PDT          128.81           7394         +              Normal
  08/24/2026 02 PM PDT          128.81           7394         0              Normal
  08/24/2026 03 PM PDT          128.80           7370         -              Normal
  08/24/2026 04 PM PDT          128.78           7320         -              Normal
  08/24/2026 05 PM PDT          128.79           7345         +              Normal
  08/24/2026 06 PM PDT          128.79           7345         0              Normal
  08/24/2026 07 PM PDT          128.79           7345         0              Normal
  08/24/2026 08 PM PDT          128.79           7345         0              Normal
  08/24/2026 09 PM PDT          128.78           7320         -              Normal
  08/24/2026 10 PM PDT          128.78           7320         0              Normal
  08/24/2026 11 PM PDT          128.79           7345         +              Normal
  08/25/2026 12 AM PDT          128.78           7320         -              Normal
  08/25/2026 01 AM PDT          128.79           7345         +              Normal
  08/25/2026 02 AM PDT          128.80           7370         +              Normal
  08/25/2026 03 AM PDT          128.81           7394         +              Normal
  08/25/2026 04 AM PDT          128.81           7394         0              Normal
  08/25/2026 05 AM PDT          128.82           7419         +              Normal
  08/25/2026 06 AM PDT          128.83           7444         +              Normal
  08/25/2026 07 AM PDT          128.83           7444         0              Normal
  08/25/2026 08 AM PDT          128.84           7468         +              Normal
  08/25/2026 09 AM PDT          128.84           7468         0              Normal
  08/25/2026 10 AM PDT          128.85           7493         +              Normal
  08/25/2026 11 AM PDT          128.85           7493         0              Normal
  08/25/2026 12 PM PDT          128.85           7493         0              Normal
  08/25/2026 01 PM PDT          128.85           7493         0              Normal
  08/25/2026 02 PM PDT          128.84           7468         -              Normal
  08/25/2026 03 PM PDT          128.85           7493         +              Normal
  08/25/2026 04 PM PDT          128.84           7468         -              Normal
  08/25/2026 05 PM PDT          128.83           7444         -              Normal
  08/25/2026 06 PM PDT          128.83           7444         0              Normal
  08/25/2026 07 PM PDT          128.82           7419         -              Normal
  08/25/2026 08 PM PDT          128.82           7419         0              Normal
  08/25/2026 09 PM PDT          128.82           7419         0              Normal
  08/25/2026 10 PM PDT          128.82           7419         0              Normal
  08/25/2026 11 PM PDT          128.82           7419         0              Normal
  08/26/2026 12 AM PDT          128.83           7444         +              Normal
  08/26/2026 01 AM PDT          128.84           7468         +              Normal
  08/26/2026 02 AM PDT          128.84           7468         0              Normal
  08/26/2026 03 AM PDT          128.83           7444         -              Normal
  08/26/2026 04 AM PDT          128.83           7444         0              Normal
  08/26/2026 05 AM PDT          128.84           7468         +              Normal
  08/26/2026 06 AM PDT          128.83           7444         -              Normal
  08/26/2026 07 AM PDT          128.84           7468         +              Normal
  08/26/2026 08 AM PDT          128.85           7493         +              Normal
  08/26/2026 09 AM PDT          128.86           7518         +              Normal
  08/26/2026 10 AM PDT          128.86           7518         0              Normal
  08/26/2026 11 AM PDT          128.86           7518         0              Normal
  08/26/2026 12 PM PDT          128.87           7543         +              Normal
  08/26/2026 01 PM PDT          128.86           7518         -              Normal
  08/26/2026 02 PM PDT          128.87           7543         +              Normal
  08/26/2026 03 PM PDT          128.86           7518         -              Normal
  08/26/2026 04 PM PDT          128.86           7518         0              Normal
  08/26/2026 05 PM PDT          128.85           7493         -              Normal
  08/26/2026 06 PM PDT          128.84           7468         -              Normal
  08/26/2026 07 PM PDT          128.83           7444         -              Normal
  08/26/2026 08 PM PDT          128.82           7419         -              Normal
  08/26/2026 09 PM PDT          128.79           7345         -              Normal
  08/26/2026 10 PM PDT          128.75           7245         -              Normal
  08/26/2026 11 PM PDT          128.72           7172         -              Normal
  08/27/2026 12 AM PDT          128.68           7073         -              Normal
  08/27/2026 01 AM PDT          128.66           7024         -              Normal
  08/27/2026 02 AM PDT          128.63           6950         -              Normal
  08/27/2026 03 AM PDT          128.62           6926         -              Normal
  08/27/2026 04 AM PDT          128.61           6901         -              Normal
  08/27/2026 05 AM PDT          128.60           6877         -              Normal
  08/27/2026 06 AM PDT          128.59           6852         -              Normal
  08/27/2026 07 AM PDT          128.61           6901         +              Normal
  08/27/2026 08 AM PDT          128.62           6926         +              Normal
  08/27/2026 09 AM PDT          128.62           6926         0              Normal
  08/27/2026 10 AM PDT          128.63           6950         +              Normal
  08/27/2026 11 AM PDT          128.63           6950         0              Normal
  08/27/2026 12 PM PDT          128.63           6950         0              Normal
  08/27/2026 01 PM PDT          128.63           6950         0              Normal
  08/27/2026 02 PM PDT          128.63           6950         0              Normal
  08/27/2026 03 PM PDT          128.63           6950         0              Normal
  08/27/2026 04 PM PDT          128.62           6926         -              Normal
  08/27/2026 05 PM PDT          128.61           6901         -              Normal
  08/27/2026 06 PM PDT          128.59           6852         -              Normal
  08/27/2026 07 PM PDT          128.59           6852         0              Normal
  08/27/2026 08 PM PDT          128.58           6827         -              Normal
  08/27/2026 09 PM PDT          128.56           6778         -              Normal
  08/27/2026 10 PM PDT          128.58           6827         +              Normal
  08/27/2026 11 PM PDT          128.60           6877         +              Normal
  08/28/2026 12 AM PDT          128.61           6901         +              Normal
  08/28/2026 01 AM PDT          128.61           6901         0              Normal
  08/28/2026 02 AM PDT          128.61           6901         0              Normal
  08/28/2026 03 AM PDT          128.61           6901         0              Normal
  08/28/2026 04 AM PDT          128.61           6901         0              Normal
  08/28/2026 05 AM PDT          128.61           6901         0              Normal
  08/28/2026 06 AM PDT          128.61           6901         0              Normal
  08/28/2026 07 AM PDT          128.61           6901         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  08/28/2026 08 AM PDT          128.61           6901                        Normal
  08/28/2026 09 AM PDT          128.60           6877         -              Normal
  08/28/2026 10 AM PDT          128.60           6877         0              Normal
  08/28/2026 11 AM PDT          128.60           6877         0              Normal
  08/28/2026 12 PM PDT          128.60           6877         0              Normal
  08/28/2026 01 PM PDT          128.59           6852         -              Normal
  08/28/2026 02 PM PDT          128.59           6852         0              Normal
  08/28/2026 03 PM PDT          128.59           6852         0              Normal
  08/28/2026 04 PM PDT          128.58           6827         -              Normal
  08/28/2026 05 PM PDT          128.57           6803         -              Normal
  08/28/2026 06 PM PDT          128.57           6803         0              Normal
  08/28/2026 07 PM PDT          128.56           6778         -              Normal
  08/28/2026 08 PM PDT          128.54           6729         -              Normal
  08/28/2026 09 PM PDT          128.53           6705         -              Normal
  08/28/2026 10 PM PDT          128.51           6656         -              Normal
  08/28/2026 11 PM PDT          128.49           6607         -              Normal
  08/29/2026 12 AM PDT          128.47           6558         -              Normal
  08/29/2026 01 AM PDT          128.46           6533         -              Normal
  08/29/2026 02 AM PDT          128.44           6485         -              Normal
  08/29/2026 03 AM PDT          128.43           6460         -              Normal
  08/29/2026 04 AM PDT          128.41           6412         -              Normal
  08/29/2026 05 AM PDT          128.40           6388         -              Normal
  08/29/2026 06 AM PDT          128.39           6363         -              Normal
  08/29/2026 07 AM PDT          128.39           6363         0              Normal
  08/29/2026 08 AM PDT          128.38           6338         -              Normal
  08/29/2026 09 AM PDT          128.38           6338         0              Normal
  08/29/2026 10 AM PDT          128.38           6338         0              Normal
  08/29/2026 11 AM PDT          128.37           6314         -              Normal
  08/29/2026 12 PM PDT          128.37           6314         0              Normal
  08/29/2026 01 PM PDT          128.37           6314         0              Normal
  08/29/2026 02 PM PDT          128.37           6314         0              Normal
  08/29/2026 03 PM PDT          128.37           6314         0              Normal
  08/29/2026 04 PM PDT          128.37           6314         0              Normal
  08/29/2026 05 PM PDT          128.37           6314         0              Normal
  08/29/2026 06 PM PDT          128.37           6314         0              Normal
  08/29/2026 07 PM PDT          128.37           6314         0              Normal
  08/29/2026 08 PM PDT          128.37           6314         0              Normal
  08/29/2026 09 PM PDT          128.37           6314         0              Normal
  08/29/2026 10 PM PDT          128.37           6314         0              Normal
  08/29/2026 11 PM PDT          128.37           6314         0              Normal
  08/30/2026 12 AM PDT          128.37           6314         0              Normal
  08/30/2026 01 AM PDT          128.37           6314         0              Normal
  08/30/2026 02 AM PDT          128.37           6314         0              Normal
  08/30/2026 03 AM PDT          128.37           6314         0              Normal
  08/30/2026 04 AM PDT          128.37           6314         0              Normal
  08/30/2026 05 AM PDT          128.37           6314         0              Normal
  08/30/2026 06 AM PDT          128.37           6314         0              Normal
  08/30/2026 07 AM PDT          128.37           6314         0              Normal
  08/30/2026 08 AM PDT          128.37           6314         0              Normal
  08/30/2026 09 AM PDT          128.37           6314         0              Normal
  08/30/2026 10 AM PDT          128.37           6314         0              Normal
  08/30/2026 11 AM PDT          128.37           6314         0              Normal
  08/30/2026 12 PM PDT          128.37           6314         0              Normal
  08/30/2026 01 PM PDT          128.37           6314         0              Normal
  08/30/2026 02 PM PDT          128.37           6314         0              Normal
  08/30/2026 03 PM PDT          128.37           6314         0              Normal
  08/30/2026 04 PM PDT          128.37           6314         0              Normal
  08/30/2026 05 PM PDT          128.37           6314         0              Normal
  08/30/2026 06 PM PDT          128.37           6314         0              Normal
  08/30/2026 07 PM PDT          128.36           6289         -              Normal
  08/30/2026 08 PM PDT          128.36           6289         0              Normal
  08/30/2026 09 PM PDT          128.34           6240         -              Normal
  08/30/2026 10 PM PDT          128.33           6216         -              Normal
  08/30/2026 11 PM PDT          128.31           6168         -              Normal
  08/31/2026 12 AM PDT          128.29           6119         -              Normal
  08/31/2026 01 AM PDT          128.27           6070         -              Normal
  08/31/2026 02 AM PDT          128.26           6046         -              Normal
  08/31/2026 03 AM PDT          128.24           5998         -              Normal
  08/31/2026 04 AM PDT          128.23           5974         -              Normal
  08/31/2026 05 AM PDT          128.22           5950         -              Normal
  08/31/2026 06 AM PDT          128.21           5926         -              Normal
  08/31/2026 07 AM PDT          128.20           5902         -              Normal
  08/31/2026 08 AM PDT          128.20           5902         0              Normal
  08/31/2026 09 AM PDT          128.19           5877         -              Normal
  08/31/2026 10 AM PDT          128.19           5877         0              Normal
  08/31/2026 11 AM PDT          128.19           5877         0              Normal
  08/31/2026 12 PM PDT          128.19           5877         0              Normal
  08/31/2026 01 PM PDT          128.19           5877         0              Normal
  08/31/2026 02 PM PDT          128.19           5877         0              Normal
  08/31/2026 03 PM PDT          128.18           5853         -              Normal
  08/31/2026 04 PM PDT          128.18           5853         0              Normal
  08/31/2026 05 PM PDT          128.18           5853         0              Normal
  08/31/2026 06 PM PDT          128.18           5853         0              Normal
  08/31/2026 07 PM PDT          128.18           5853         0              Normal
  08/31/2026 08 PM PDT          128.18           5853         0              Normal
  08/31/2026 09 PM PDT          128.17           5828         -              Normal
  08/31/2026 10 PM PDT          128.15           5780         -              Normal
  08/31/2026 11 PM PDT          128.14           5756         -              Normal
  09/01/2026 12 AM PDT          128.12           5708         -              Normal
  09/01/2026 01 AM PDT          128.10           5660         -              Normal
  09/01/2026 02 AM PDT          128.09           5636         -              Normal
  09/01/2026 03 AM PDT          128.07           5587         -              Normal
  09/01/2026 04 AM PDT          128.06           5563         -              Normal
  09/01/2026 05 AM PDT          128.05           5539         -              Normal
  09/01/2026 06 AM PDT          128.04           5515         -              Normal
  09/01/2026 07 AM PDT          128.04           5515         0              Normal
  09/01/2026 08 AM PDT          128.03           5491         -              Normal
  09/01/2026 09 AM PDT          128.03           5491         0              Normal
  09/01/2026 10 AM PDT          128.03           5491         0              Normal
  09/01/2026 11 AM PDT          128.02           5467         -              Normal
  09/01/2026 12 PM PDT          128.02           5467         0              Normal
  09/01/2026 01 PM PDT          128.02           5467         0              Normal
  09/01/2026 02 PM PDT          128.02           5467         0              Normal
  09/01/2026 03 PM PDT          128.02           5467         0              Normal
  09/01/2026 04 PM PDT          128.02           5467         0              Normal
  09/01/2026 05 PM PDT          128.02           5467         0              Normal
  09/01/2026 06 PM PDT          128.02           5467         0              Normal
  09/01/2026 07 PM PDT          128.02           5467         0              Normal
  09/01/2026 08 PM PDT          128.02           5467         0              Normal
  09/01/2026 09 PM PDT          128.02           5467         0              Normal
  09/01/2026 10 PM PDT          128.02           5467         0              Normal
  09/01/2026 11 PM PDT          128.02           5467         0              Normal
  09/02/2026 12 AM PDT          128.02           5467         0              Normal
  09/02/2026 01 AM PDT          128.02           5467         0              Normal
  09/02/2026 02 AM PDT          128.02           5467         0              Normal
  09/02/2026 03 AM PDT          128.02           5467         0              Normal
  09/02/2026 04 AM PDT          128.02           5467         0              Normal
  09/02/2026 05 AM PDT          128.02           5467         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.