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 21 2026 at 7:31 AM PDTNext Issuance: May 22 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:  05/21/2026 at 07:31 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/18/2026 at 05:00 AM PDT
# Maximum Observed Stage:                       128.91 Feet
# Maximum Observed Flow:                        7642 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/26/2026 at 05:00 AM PDT
# Maximum Forecast Stage:                       129.04 Feet
# Maximum Forecast Flow:                        7965 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/16/2026 07 AM PDT          128.43           6460                        Normal
  05/16/2026 08 AM PDT          128.42           6436         -              Normal
  05/16/2026 09 AM PDT          128.41           6412         -              Normal
  05/16/2026 10 AM PDT          128.41           6412         0              Normal
  05/16/2026 11 AM PDT          128.40           6388         -              Normal
  05/16/2026 12 PM PDT          128.40           6388         0              Normal
  05/16/2026 01 PM PDT          128.43           6460         +              Normal
  05/16/2026 02 PM PDT          128.43           6460         0              Normal
  05/16/2026 03 PM PDT          128.45           6509         +              Normal
  05/16/2026 04 PM PDT          128.47           6558         +              Normal
  05/16/2026 05 PM PDT          128.50           6632         +              Normal
  05/16/2026 06 PM PDT          128.52           6680         +              Normal
  05/16/2026 07 PM PDT          128.55           6753         +              Normal
  05/16/2026 08 PM PDT          128.56           6778         +              Normal
  05/16/2026 09 PM PDT          128.58           6827         +              Normal
  05/16/2026 10 PM PDT          128.58           6827         0              Normal
  05/16/2026 11 PM PDT          128.57           6803         -              Normal
  05/17/2026 12 AM PDT          128.58           6827         +              Normal
  05/17/2026 01 AM PDT          128.57           6803         -              Normal
  05/17/2026 02 AM PDT          128.58           6827         +              Normal
  05/17/2026 03 AM PDT          128.57           6803         -              Normal
  05/17/2026 04 AM PDT          128.57           6803         0              Normal
  05/17/2026 05 AM PDT          128.55           6753         -              Normal
  05/17/2026 06 AM PDT          128.54           6729         -              Normal
  05/17/2026 07 AM PDT          128.54           6729         0              Normal
  05/17/2026 08 AM PDT          128.54           6729         0              Normal
  05/17/2026 09 AM PDT          128.55           6753         +              Normal
  05/17/2026 10 AM PDT          128.55           6753         0              Normal
  05/17/2026 11 AM PDT          128.56           6778         +              Normal
  05/17/2026 12 PM PDT          128.59           6852         +              Normal
  05/17/2026 01 PM PDT          128.59           6852         0              Normal
  05/17/2026 02 PM PDT          128.63           6950         +              Normal
  05/17/2026 03 PM PDT          128.65           6999         +              Normal
  05/17/2026 04 PM PDT          128.69           7098         +              Normal
  05/17/2026 05 PM PDT          128.69           7098         0              Normal
  05/17/2026 06 PM PDT          128.73           7196         +              Normal
  05/17/2026 07 PM PDT          128.72           7172         -              Normal
  05/17/2026 08 PM PDT          128.77           7295         +              Normal
  05/17/2026 09 PM PDT          128.80           7370         +              Normal
  05/17/2026 10 PM PDT          128.82           7419         +              Normal
  05/17/2026 11 PM PDT          128.85           7493         +              Normal
  05/18/2026 12 AM PDT          128.87           7543         +              Normal
  05/18/2026 01 AM PDT          128.88           7568         +              Normal
  05/18/2026 02 AM PDT          128.90           7618         +              Normal
  05/18/2026 03 AM PDT          128.91           7642         +              Normal
  05/18/2026 04 AM PDT          128.91           7642         0              Normal
  05/18/2026 05 AM PDT          128.91           7642         0              Normal
  05/18/2026 06 AM PDT          128.86           7518         -              Normal
  05/18/2026 07 AM PDT          128.86           7518         0              Normal
  05/18/2026 08 AM PDT          128.83           7444         -              Normal
  05/18/2026 09 AM PDT          128.83           7444         0              Normal
  05/18/2026 10 AM PDT          128.82           7419         -              Normal
  05/18/2026 11 AM PDT          128.83           7444         +              Normal
  05/18/2026 12 PM PDT          128.84           7468         +              Normal
  05/18/2026 01 PM PDT          128.87           7543         +              Normal
  05/18/2026 02 PM PDT          128.87           7543         0              Normal
  05/18/2026 03 PM PDT          128.87           7543         0              Normal
  05/18/2026 04 PM PDT          128.86           7518         -              Normal
  05/18/2026 05 PM PDT          128.86           7518         0              Normal
  05/18/2026 06 PM PDT          128.83           7444         -              Normal
  05/18/2026 07 PM PDT          128.81           7394         -              Normal
  05/18/2026 08 PM PDT          128.80           7370         -              Normal
  05/18/2026 09 PM PDT          128.80           7370         0              Normal
  05/18/2026 10 PM PDT          128.81           7394         +              Normal
  05/18/2026 11 PM PDT          128.81           7394         0              Normal
  05/19/2026 12 AM PDT          128.81           7394         0              Normal
  05/19/2026 01 AM PDT          128.80           7370         -              Normal
  05/19/2026 02 AM PDT          128.80           7370         0              Normal
  05/19/2026 03 AM PDT          128.79           7345         -              Normal
  05/19/2026 04 AM PDT          128.78           7320         -              Normal
  05/19/2026 05 AM PDT          128.78           7320         0              Normal
  05/19/2026 06 AM PDT          128.79           7345         +              Normal
  05/19/2026 07 AM PDT          128.79           7345         0              Normal
  05/19/2026 08 AM PDT          128.78           7320         -              Normal
  05/19/2026 09 AM PDT          128.77           7295         -              Normal
  05/19/2026 10 AM PDT          128.77           7295         0              Normal
  05/19/2026 11 AM PDT          128.76           7270         -              Normal
  05/19/2026 12 PM PDT          128.78           7320         +              Normal
  05/19/2026 01 PM PDT          128.78           7320         0              Normal
  05/19/2026 02 PM PDT          128.76           7270         -              Normal
  05/19/2026 03 PM PDT          128.76           7270         0              Normal
  05/19/2026 04 PM PDT          128.75           7245         -              Normal
  05/19/2026 05 PM PDT          128.73           7196         -              Normal
  05/19/2026 06 PM PDT          128.72           7172         -              Normal
  05/19/2026 07 PM PDT          128.70           7123         -              Normal
  05/19/2026 08 PM PDT          128.69           7098         -              Normal
  05/19/2026 09 PM PDT          128.68           7073         -              Normal
  05/19/2026 10 PM PDT          128.67           7048         -              Normal
  05/19/2026 11 PM PDT          128.65           6999         -              Normal
  05/20/2026 12 AM PDT          128.64           6974         -              Normal
  05/20/2026 01 AM PDT          128.62           6926         -              Normal
  05/20/2026 02 AM PDT          128.62           6926         0              Normal
  05/20/2026 03 AM PDT          128.60           6877         -              Normal
  05/20/2026 04 AM PDT          128.60           6877         0              Normal
  05/20/2026 05 AM PDT          128.60           6877         0              Normal
  05/20/2026 06 AM PDT          128.61           6901         +              Normal
  05/20/2026 07 AM PDT          128.61           6901         0              Normal
  05/20/2026 08 AM PDT          128.62           6926         +              Normal
  05/20/2026 09 AM PDT          128.63           6950         +              Normal
  05/20/2026 10 AM PDT          128.66           7024         +              Normal
  05/20/2026 11 AM PDT          128.67           7048         +              Normal
  05/20/2026 12 PM PDT          128.68           7073         +              Normal
  05/20/2026 01 PM PDT          128.69           7098         +              Normal
  05/20/2026 02 PM PDT          128.70           7123         +              Normal
  05/20/2026 03 PM PDT          128.70           7123         0              Normal
  05/20/2026 04 PM PDT          128.70           7123         0              Normal
  05/20/2026 05 PM PDT          128.69           7098         -              Normal
  05/20/2026 06 PM PDT          128.69           7098         0              Normal
  05/20/2026 07 PM PDT          128.68           7073         -              Normal
  05/20/2026 08 PM PDT          128.67           7048         -              Normal
  05/20/2026 09 PM PDT          128.67           7048         0              Normal
  05/20/2026 10 PM PDT          128.67           7048         0              Normal
  05/20/2026 11 PM PDT          128.67           7048         0              Normal
  05/21/2026 12 AM PDT          128.68           7073         +              Normal
  05/21/2026 01 AM PDT          128.69           7098         +              Normal
  05/21/2026 02 AM PDT          128.70           7123         +              Normal
  05/21/2026 03 AM PDT          128.71           7147         +              Normal
  05/21/2026 04 AM PDT          128.73           7196         +              Normal
  05/21/2026 05 AM PDT          128.74           7221         +              Normal
  05/21/2026 06 AM PDT          128.75           7245         +              Normal
  05/21/2026 07 AM PDT          128.76           7270         +              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/21/2026 08 AM PDT          128.78           7320                        Normal
  05/21/2026 09 AM PDT          128.79           7345         +              Normal
  05/21/2026 10 AM PDT          128.80           7370         +              Normal
  05/21/2026 11 AM PDT          128.80           7370         0              Normal
  05/21/2026 12 PM PDT          128.81           7394         +              Normal
  05/21/2026 01 PM PDT          128.81           7394         0              Normal
  05/21/2026 02 PM PDT          128.81           7394         0              Normal
  05/21/2026 03 PM PDT          128.81           7394         0              Normal
  05/21/2026 04 PM PDT          128.80           7370         -              Normal
  05/21/2026 05 PM PDT          128.80           7370         0              Normal
  05/21/2026 06 PM PDT          128.80           7370         0              Normal
  05/21/2026 07 PM PDT          128.79           7345         -              Normal
  05/21/2026 08 PM PDT          128.79           7345         0              Normal
  05/21/2026 09 PM PDT          128.79           7345         0              Normal
  05/21/2026 10 PM PDT          128.78           7320         -              Normal
  05/21/2026 11 PM PDT          128.78           7320         0              Normal
  05/22/2026 12 AM PDT          128.78           7320         0              Normal
  05/22/2026 01 AM PDT          128.78           7320         0              Normal
  05/22/2026 02 AM PDT          128.78           7320         0              Normal
  05/22/2026 03 AM PDT          128.78           7320         0              Normal
  05/22/2026 04 AM PDT          128.78           7320         0              Normal
  05/22/2026 05 AM PDT          128.78           7320         0              Normal
  05/22/2026 06 AM PDT          128.78           7320         0              Normal
  05/22/2026 07 AM PDT          128.78           7320         0              Normal
  05/22/2026 08 AM PDT          128.78           7320         0              Normal
  05/22/2026 09 AM PDT          128.78           7320         0              Normal
  05/22/2026 10 AM PDT          128.78           7320         0              Normal
  05/22/2026 11 AM PDT          128.78           7320         0              Normal
  05/22/2026 12 PM PDT          128.78           7320         0              Normal
  05/22/2026 01 PM PDT          128.78           7320         0              Normal
  05/22/2026 02 PM PDT          128.78           7320         0              Normal
  05/22/2026 03 PM PDT          128.78           7320         0              Normal
  05/22/2026 04 PM PDT          128.77           7295         -              Normal
  05/22/2026 05 PM PDT          128.77           7295         0              Normal
  05/22/2026 06 PM PDT          128.76           7270         -              Normal
  05/22/2026 07 PM PDT          128.75           7245         -              Normal
  05/22/2026 08 PM PDT          128.74           7221         -              Normal
  05/22/2026 09 PM PDT          128.73           7196         -              Normal
  05/22/2026 10 PM PDT          128.72           7172         -              Normal
  05/22/2026 11 PM PDT          128.72           7172         0              Normal
  05/23/2026 12 AM PDT          128.71           7147         -              Normal
  05/23/2026 01 AM PDT          128.70           7123         -              Normal
  05/23/2026 02 AM PDT          128.70           7123         0              Normal
  05/23/2026 03 AM PDT          128.69           7098         -              Normal
  05/23/2026 04 AM PDT          128.69           7098         0              Normal
  05/23/2026 05 AM PDT          128.69           7098         0              Normal
  05/23/2026 06 AM PDT          128.69           7098         0              Normal
  05/23/2026 07 AM PDT          128.68           7073         -              Normal
  05/23/2026 08 AM PDT          128.68           7073         0              Normal
  05/23/2026 09 AM PDT          128.68           7073         0              Normal
  05/23/2026 10 AM PDT          128.68           7073         0              Normal
  05/23/2026 11 AM PDT          128.68           7073         0              Normal
  05/23/2026 12 PM PDT          128.68           7073         0              Normal
  05/23/2026 01 PM PDT          128.68           7073         0              Normal
  05/23/2026 02 PM PDT          128.68           7073         0              Normal
  05/23/2026 03 PM PDT          128.68           7073         0              Normal
  05/23/2026 04 PM PDT          128.68           7073         0              Normal
  05/23/2026 05 PM PDT          128.68           7073         0              Normal
  05/23/2026 06 PM PDT          128.69           7098         +              Normal
  05/23/2026 07 PM PDT          128.69           7098         0              Normal
  05/23/2026 08 PM PDT          128.71           7147         +              Normal
  05/23/2026 09 PM PDT          128.72           7172         +              Normal
  05/23/2026 10 PM PDT          128.75           7245         +              Normal
  05/23/2026 11 PM PDT          128.77           7295         +              Normal
  05/24/2026 12 AM PDT          128.79           7345         +              Normal
  05/24/2026 01 AM PDT          128.81           7394         +              Normal
  05/24/2026 02 AM PDT          128.83           7444         +              Normal
  05/24/2026 03 AM PDT          128.84           7468         +              Normal
  05/24/2026 04 AM PDT          128.85           7493         +              Normal
  05/24/2026 05 AM PDT          128.86           7518         +              Normal
  05/24/2026 06 AM PDT          128.87           7543         +              Normal
  05/24/2026 07 AM PDT          128.87           7543         0              Normal
  05/24/2026 08 AM PDT          128.88           7568         +              Normal
  05/24/2026 09 AM PDT          128.88           7568         0              Normal
  05/24/2026 10 AM PDT          128.88           7568         0              Normal
  05/24/2026 11 AM PDT          128.88           7568         0              Normal
  05/24/2026 12 PM PDT          128.89           7593         +              Normal
  05/24/2026 01 PM PDT          128.89           7593         0              Normal
  05/24/2026 02 PM PDT          128.89           7593         0              Normal
  05/24/2026 03 PM PDT          128.89           7593         0              Normal
  05/24/2026 04 PM PDT          128.89           7593         0              Normal
  05/24/2026 05 PM PDT          128.89           7593         0              Normal
  05/24/2026 06 PM PDT          128.89           7593         0              Normal
  05/24/2026 07 PM PDT          128.89           7593         0              Normal
  05/24/2026 08 PM PDT          128.89           7593         0              Normal
  05/24/2026 09 PM PDT          128.89           7593         0              Normal
  05/24/2026 10 PM PDT          128.89           7593         0              Normal
  05/24/2026 11 PM PDT          128.89           7593         0              Normal
  05/25/2026 12 AM PDT          128.89           7593         0              Normal
  05/25/2026 01 AM PDT          128.89           7593         0              Normal
  05/25/2026 02 AM PDT          128.89           7593         0              Normal
  05/25/2026 03 AM PDT          128.89           7593         0              Normal
  05/25/2026 04 AM PDT          128.89           7593         0              Normal
  05/25/2026 05 AM PDT          128.89           7593         0              Normal
  05/25/2026 06 AM PDT          128.89           7593         0              Normal
  05/25/2026 07 AM PDT          128.90           7618         +              Normal
  05/25/2026 08 AM PDT          128.90           7618         0              Normal
  05/25/2026 09 AM PDT          128.90           7618         0              Normal
  05/25/2026 10 AM PDT          128.91           7642         +              Normal
  05/25/2026 11 AM PDT          128.91           7642         0              Normal
  05/25/2026 12 PM PDT          128.92           7667         +              Normal
  05/25/2026 01 PM PDT          128.92           7667         0              Normal
  05/25/2026 02 PM PDT          128.93           7692         +              Normal
  05/25/2026 03 PM PDT          128.94           7716         +              Normal
  05/25/2026 04 PM PDT          128.94           7716         0              Normal
  05/25/2026 05 PM PDT          128.95           7741         +              Normal
  05/25/2026 06 PM PDT          128.96           7766         +              Normal
  05/25/2026 07 PM PDT          128.97           7791         +              Normal
  05/25/2026 08 PM PDT          128.97           7791         0              Normal
  05/25/2026 09 PM PDT          128.98           7816         +              Normal
  05/25/2026 10 PM PDT          128.99           7841         +              Normal
  05/25/2026 11 PM PDT          128.99           7841         0              Normal
  05/26/2026 12 AM PDT          129.00           7866         +              Normal
  05/26/2026 01 AM PDT          129.01           7891         +              Normal
  05/26/2026 02 AM PDT          129.02           7915         +              Normal
  05/26/2026 03 AM PDT          129.02           7915         0              Normal
  05/26/2026 04 AM PDT          129.03           7940         +              Normal
  05/26/2026 05 AM PDT          129.04           7965         +              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.