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: May 06 2026 at 7:46 AM PDTNext Issuance: May 07 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:  05/06/2026 at 07:47 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/01/2026 at 11:00 AM PDT
# Maximum Observed Stage:                       128.79 Feet
# Maximum Observed Flow:                        7345 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/08/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       128.73 Feet
# Maximum Forecast Flow:                        7196 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/01/2026 07 AM PDT          128.78           7320                        Normal
  05/01/2026 08 AM PDT          128.78           7320         0              Normal
  05/01/2026 09 AM PDT          128.79           7345         +              Normal
  05/01/2026 10 AM PDT          128.79           7345         0              Normal
  05/01/2026 11 AM PDT          128.79           7345         0              Normal
  05/01/2026 12 PM PDT          128.78           7320         -              Normal
  05/01/2026 01 PM PDT          128.78           7320         0              Normal
  05/01/2026 02 PM PDT          128.77           7295         -              Normal
  05/01/2026 03 PM PDT          128.76           7270         -              Normal
  05/01/2026 04 PM PDT          128.76           7270         0              Normal
  05/01/2026 05 PM PDT          128.75           7245         -              Normal
  05/01/2026 06 PM PDT          128.74           7221         -              Normal
  05/01/2026 07 PM PDT          128.73           7196         -              Normal
  05/01/2026 08 PM PDT          128.73           7196         0              Normal
  05/01/2026 09 PM PDT          128.72           7172         -              Normal
  05/01/2026 10 PM PDT          128.71           7147         -              Normal
  05/01/2026 11 PM PDT          128.70           7123         -              Normal
  05/02/2026 12 AM PDT          128.67           7048         -              Normal
  05/02/2026 01 AM PDT          128.67           7048         0              Normal
  05/02/2026 02 AM PDT          128.66           7024         -              Normal
  05/02/2026 03 AM PDT          128.66           7024         0              Normal
  05/02/2026 04 AM PDT          128.65           6999         -              Normal
  05/02/2026 05 AM PDT          128.65           6999         0              Normal
  05/02/2026 06 AM PDT          128.65           6999         0              Normal
  05/02/2026 07 AM PDT          128.64           6974         -              Normal
  05/02/2026 08 AM PDT          128.62           6926         -              Normal
  05/02/2026 09 AM PDT          128.60           6877         -              Normal
  05/02/2026 10 AM PDT          128.59           6852         -              Normal
  05/02/2026 11 AM PDT          128.55           6753         -              Normal
  05/02/2026 12 PM PDT          128.55           6753         0              Normal
  05/02/2026 01 PM PDT          128.57           6803         +              Normal
  05/02/2026 02 PM PDT          128.54           6729         -              Normal
  05/02/2026 03 PM PDT          128.55           6753         +              Normal
  05/02/2026 04 PM PDT          128.55           6753         0              Normal
  05/02/2026 05 PM PDT          128.54           6729         -              Normal
  05/02/2026 06 PM PDT          128.56           6778         +              Normal
  05/02/2026 07 PM PDT          128.55           6753         -              Normal
  05/02/2026 08 PM PDT          128.54           6729         -              Normal
  05/02/2026 09 PM PDT          128.53           6705         -              Normal
  05/02/2026 10 PM PDT          128.52           6680         -              Normal
  05/02/2026 11 PM PDT          128.52           6680         0              Normal
  05/03/2026 12 AM PDT          128.51           6656         -              Normal
  05/03/2026 01 AM PDT          128.51           6656         0              Normal
  05/03/2026 02 AM PDT          128.50           6632         -              Normal
  05/03/2026 03 AM PDT          128.50           6632         0              Normal
  05/03/2026 04 AM PDT          128.49           6607         -              Normal
  05/03/2026 05 AM PDT          128.49           6607         0              Normal
  05/03/2026 06 AM PDT          128.49           6607         0              Normal
  05/03/2026 07 AM PDT          128.48           6582         -              Normal
  05/03/2026 08 AM PDT          128.44           6485         -              Normal
  05/03/2026 09 AM PDT          128.41           6412         -              Normal
  05/03/2026 10 AM PDT          128.41           6412         0              Normal
  05/03/2026 11 AM PDT          128.41           6412         0              Normal
  05/03/2026 12 PM PDT          128.43           6460         +              Normal
  05/03/2026 01 PM PDT          128.43           6460         0              Normal
  05/03/2026 02 PM PDT          128.44           6485         +              Normal
  05/03/2026 03 PM PDT          128.45           6509         +              Normal
  05/03/2026 04 PM PDT          128.43           6460         -              Normal
  05/03/2026 05 PM PDT          128.43           6460         0              Normal
  05/03/2026 06 PM PDT          128.46           6533         +              Normal
  05/03/2026 07 PM PDT          128.48           6582         +              Normal
  05/03/2026 08 PM PDT          128.49           6607         +              Normal
  05/03/2026 09 PM PDT          128.49           6607         0              Normal
  05/03/2026 10 PM PDT          128.49           6607         0              Normal
  05/03/2026 11 PM PDT          128.49           6607         0              Normal
  05/04/2026 12 AM PDT          128.49           6607         0              Normal
  05/04/2026 01 AM PDT          128.49           6607         0              Normal
  05/04/2026 02 AM PDT          128.48           6582         -              Normal
  05/04/2026 03 AM PDT          128.49           6607         +              Normal
  05/04/2026 04 AM PDT          128.49           6607         0              Normal
  05/04/2026 05 AM PDT          128.44           6485         -              Normal
  05/04/2026 06 AM PDT          128.40           6388         -              Normal
  05/04/2026 07 AM PDT          128.39           6363         -              Normal
  05/04/2026 08 AM PDT          128.43           6460         +              Normal
  05/04/2026 09 AM PDT          128.46           6533         +              Normal
  05/04/2026 10 AM PDT          128.46           6533         0              Normal
  05/04/2026 11 AM PDT          128.46           6533         0              Normal
  05/04/2026 12 PM PDT          128.45           6509         -              Normal
  05/04/2026 01 PM PDT          128.45           6509         0              Normal
  05/04/2026 02 PM PDT          128.43           6460         -              Normal
  05/04/2026 03 PM PDT          128.42           6436         -              Normal
  05/04/2026 04 PM PDT          128.38           6338         -              Normal
  05/04/2026 05 PM PDT          128.38           6338         0              Normal
  05/04/2026 06 PM PDT          128.37           6314         -              Normal
  05/04/2026 07 PM PDT          128.37           6314         0              Normal
  05/04/2026 08 PM PDT          128.36           6289         -              Normal
  05/04/2026 09 PM PDT          128.36           6289         0              Normal
  05/04/2026 10 PM PDT          128.38           6338         +              Normal
  05/04/2026 11 PM PDT          128.39           6363         +              Normal
  05/05/2026 12 AM PDT          128.39           6363         0              Normal
  05/05/2026 01 AM PDT          128.38           6338         -              Normal
  05/05/2026 02 AM PDT          128.37           6314         -              Normal
  05/05/2026 03 AM PDT          128.34           6240         -              Normal
  05/05/2026 04 AM PDT          128.32           6192         -              Normal
  05/05/2026 05 AM PDT          128.32           6192         0              Normal
  05/05/2026 06 AM PDT          128.31           6168         -              Normal
  05/05/2026 07 AM PDT          128.31           6168         0              Normal
  05/05/2026 08 AM PDT          128.29           6119         -              Normal
  05/05/2026 09 AM PDT          128.27           6070         -              Normal
  05/05/2026 10 AM PDT          128.26           6046         -              Normal
  05/05/2026 11 AM PDT          128.26           6046         0              Normal
  05/05/2026 12 PM PDT          128.26           6046         0              Normal
  05/05/2026 01 PM PDT          128.26           6046         0              Normal
  05/05/2026 02 PM PDT          128.27           6070         +              Normal
  05/05/2026 03 PM PDT          128.27           6070         0              Normal
  05/05/2026 04 PM PDT          128.27           6070         0              Normal
  05/05/2026 05 PM PDT          128.28           6095         +              Normal
  05/05/2026 06 PM PDT          128.27           6070         -              Normal
  05/05/2026 07 PM PDT          128.28           6095         +              Normal
  05/05/2026 08 PM PDT          128.30           6144         +              Normal
  05/05/2026 09 PM PDT          128.33           6216         +              Normal
  05/05/2026 10 PM PDT          128.36           6289         +              Normal
  05/05/2026 11 PM PDT          128.40           6388         +              Normal
  05/06/2026 12 AM PDT          128.44           6485         +              Normal
  05/06/2026 01 AM PDT          128.49           6607         +              Normal
  05/06/2026 02 AM PDT          128.52           6680         +              Normal
  05/06/2026 03 AM PDT          128.54           6729         +              Normal
  05/06/2026 04 AM PDT          128.57           6803         +              Normal
  05/06/2026 05 AM PDT          128.58           6827         +              Normal
  05/06/2026 06 AM PDT          128.59           6852         +              Normal
  05/06/2026 07 AM PDT          128.59           6852         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/06/2026 08 AM PDT          128.60           6877                        Normal
  05/06/2026 09 AM PDT          128.60           6877         0              Normal
  05/06/2026 10 AM PDT          128.61           6901         +              Normal
  05/06/2026 11 AM PDT          128.61           6901         0              Normal
  05/06/2026 12 PM PDT          128.61           6901         0              Normal
  05/06/2026 01 PM PDT          128.62           6926         +              Normal
  05/06/2026 02 PM PDT          128.62           6926         0              Normal
  05/06/2026 03 PM PDT          128.62           6926         0              Normal
  05/06/2026 04 PM PDT          128.61           6901         -              Normal
  05/06/2026 05 PM PDT          128.61           6901         0              Normal
  05/06/2026 06 PM PDT          128.61           6901         0              Normal
  05/06/2026 07 PM PDT          128.61           6901         0              Normal
  05/06/2026 08 PM PDT          128.61           6901         0              Normal
  05/06/2026 09 PM PDT          128.61           6901         0              Normal
  05/06/2026 10 PM PDT          128.60           6877         -              Normal
  05/06/2026 11 PM PDT          128.60           6877         0              Normal
  05/07/2026 12 AM PDT          128.60           6877         0              Normal
  05/07/2026 01 AM PDT          128.60           6877         0              Normal
  05/07/2026 02 AM PDT          128.59           6852         -              Normal
  05/07/2026 03 AM PDT          128.59           6852         0              Normal
  05/07/2026 04 AM PDT          128.59           6852         0              Normal
  05/07/2026 05 AM PDT          128.59           6852         0              Normal
  05/07/2026 06 AM PDT          128.59           6852         0              Normal
  05/07/2026 07 AM PDT          128.59           6852         0              Normal
  05/07/2026 08 AM PDT          128.58           6827         -              Normal
  05/07/2026 09 AM PDT          128.58           6827         0              Normal
  05/07/2026 10 AM PDT          128.58           6827         0              Normal
  05/07/2026 11 AM PDT          128.58           6827         0              Normal
  05/07/2026 12 PM PDT          128.58           6827         0              Normal
  05/07/2026 01 PM PDT          128.58           6827         0              Normal
  05/07/2026 02 PM PDT          128.58           6827         0              Normal
  05/07/2026 03 PM PDT          128.58           6827         0              Normal
  05/07/2026 04 PM PDT          128.57           6803         -              Normal
  05/07/2026 05 PM PDT          128.57           6803         0              Normal
  05/07/2026 06 PM PDT          128.58           6827         +              Normal
  05/07/2026 07 PM PDT          128.58           6827         0              Normal
  05/07/2026 08 PM PDT          128.59           6852         +              Normal
  05/07/2026 09 PM PDT          128.61           6901         +              Normal
  05/07/2026 10 PM PDT          128.63           6950         +              Normal
  05/07/2026 11 PM PDT          128.65           6999         +              Normal
  05/08/2026 12 AM PDT          128.66           7024         +              Normal
  05/08/2026 01 AM PDT          128.68           7073         +              Normal
  05/08/2026 02 AM PDT          128.69           7098         +              Normal
  05/08/2026 03 AM PDT          128.70           7123         +              Normal
  05/08/2026 04 AM PDT          128.71           7147         +              Normal
  05/08/2026 05 AM PDT          128.72           7172         +              Normal
  05/08/2026 06 AM PDT          128.72           7172         0              Normal
  05/08/2026 07 AM PDT          128.72           7172         0              Normal
  05/08/2026 08 AM PDT          128.73           7196         +              Normal
  05/08/2026 09 AM PDT          128.73           7196         0              Normal
  05/08/2026 10 AM PDT          128.73           7196         0              Normal
  05/08/2026 11 AM PDT          128.73           7196         0              Normal
  05/08/2026 12 PM PDT          128.73           7196         0              Normal
  05/08/2026 01 PM PDT          128.73           7196         0              Normal
  05/08/2026 02 PM PDT          128.73           7196         0              Normal
  05/08/2026 03 PM PDT          128.72           7172         -              Normal
  05/08/2026 04 PM PDT          128.72           7172         0              Normal
  05/08/2026 05 PM PDT          128.72           7172         0              Normal
  05/08/2026 06 PM PDT          128.72           7172         0              Normal
  05/08/2026 07 PM PDT          128.72           7172         0              Normal
  05/08/2026 08 PM PDT          128.72           7172         0              Normal
  05/08/2026 09 PM PDT          128.72           7172         0              Normal
  05/08/2026 10 PM PDT          128.72           7172         0              Normal
  05/08/2026 11 PM PDT          128.71           7147         -              Normal
  05/09/2026 12 AM PDT          128.71           7147         0              Normal
  05/09/2026 01 AM PDT          128.71           7147         0              Normal
  05/09/2026 02 AM PDT          128.71           7147         0              Normal
  05/09/2026 03 AM PDT          128.71           7147         0              Normal
  05/09/2026 04 AM PDT          128.70           7123         -              Normal
  05/09/2026 05 AM PDT          128.70           7123         0              Normal
  05/09/2026 06 AM PDT          128.70           7123         0              Normal
  05/09/2026 07 AM PDT          128.70           7123         0              Normal
  05/09/2026 08 AM PDT          128.70           7123         0              Normal
  05/09/2026 09 AM PDT          128.70           7123         0              Normal
  05/09/2026 10 AM PDT          128.70           7123         0              Normal
  05/09/2026 11 AM PDT          128.70           7123         0              Normal
  05/09/2026 12 PM PDT          128.70           7123         0              Normal
  05/09/2026 01 PM PDT          128.69           7098         -              Normal
  05/09/2026 02 PM PDT          128.69           7098         0              Normal
  05/09/2026 03 PM PDT          128.69           7098         0              Normal
  05/09/2026 04 PM PDT          128.69           7098         0              Normal
  05/09/2026 05 PM PDT          128.69           7098         0              Normal
  05/09/2026 06 PM PDT          128.69           7098         0              Normal
  05/09/2026 07 PM PDT          128.69           7098         0              Normal
  05/09/2026 08 PM PDT          128.69           7098         0              Normal
  05/09/2026 09 PM PDT          128.69           7098         0              Normal
  05/09/2026 10 PM PDT          128.69           7098         0              Normal
  05/09/2026 11 PM PDT          128.69           7098         0              Normal
  05/10/2026 12 AM PDT          128.68           7073         -              Normal
  05/10/2026 01 AM PDT          128.68           7073         0              Normal
  05/10/2026 02 AM PDT          128.68           7073         0              Normal
  05/10/2026 03 AM PDT          128.68           7073         0              Normal
  05/10/2026 04 AM PDT          128.68           7073         0              Normal
  05/10/2026 05 AM PDT          128.68           7073         0              Normal
  05/10/2026 06 AM PDT          128.68           7073         0              Normal
  05/10/2026 07 AM PDT          128.67           7048         -              Normal
  05/10/2026 08 AM PDT          128.67           7048         0              Normal
  05/10/2026 09 AM PDT          128.67           7048         0              Normal
  05/10/2026 10 AM PDT          128.67           7048         0              Normal
  05/10/2026 11 AM PDT          128.67           7048         0              Normal
  05/10/2026 12 PM PDT          128.67           7048         0              Normal
  05/10/2026 01 PM PDT          128.67           7048         0              Normal
  05/10/2026 02 PM PDT          128.67           7048         0              Normal
  05/10/2026 03 PM PDT          128.67           7048         0              Normal
  05/10/2026 04 PM PDT          128.67           7048         0              Normal
  05/10/2026 05 PM PDT          128.67           7048         0              Normal
  05/10/2026 06 PM PDT          128.67           7048         0              Normal
  05/10/2026 07 PM PDT          128.67           7048         0              Normal
  05/10/2026 08 PM PDT          128.67           7048         0              Normal
  05/10/2026 09 PM PDT          128.67           7048         0              Normal
  05/10/2026 10 PM PDT          128.66           7024         -              Normal
  05/10/2026 11 PM PDT          128.66           7024         0              Normal
  05/11/2026 12 AM PDT          128.66           7024         0              Normal
  05/11/2026 01 AM PDT          128.66           7024         0              Normal
  05/11/2026 02 AM PDT          128.66           7024         0              Normal
  05/11/2026 03 AM PDT          128.66           7024         0              Normal
  05/11/2026 04 AM PDT          128.66           7024         0              Normal
  05/11/2026 05 AM PDT          128.65           6999         -              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.