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: Apr 30 2026 at 7:19 AM PDTNext Issuance: May 01 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:  04/30/2026 at 07:19 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/28/2026 at 02:00 AM PDT
# Maximum Observed Stage:                       129.40 Feet
# Maximum Observed Flow:                        8866 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/05/2026 at 05:00 AM PDT
# Maximum Forecast Stage:                       129.05 Feet
# Maximum Forecast Flow:                        7990 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/25/2026 07 AM PDT          129.35           8740                        Normal
  04/25/2026 08 AM PDT          129.35           8740         0              Normal
  04/25/2026 09 AM PDT          129.31           8640         -              Normal
  04/25/2026 10 AM PDT          129.34           8715         +              Normal
  04/25/2026 11 AM PDT          129.33           8690         -              Normal
  04/25/2026 12 PM PDT          129.32           8665         -              Normal
  04/25/2026 01 PM PDT          129.32           8665         0              Normal
  04/25/2026 02 PM PDT          129.32           8665         0              Normal
  04/25/2026 03 PM PDT          129.29           8590         -              Normal
  04/25/2026 04 PM PDT          129.27           8539         -              Normal
  04/25/2026 05 PM PDT          129.25           8489         -              Normal
  04/25/2026 06 PM PDT          129.25           8489         0              Normal
  04/25/2026 07 PM PDT          129.24           8464         -              Normal
  04/25/2026 08 PM PDT          129.23           8439         -              Normal
  04/25/2026 09 PM PDT          129.24           8464         +              Normal
  04/25/2026 10 PM PDT          129.21           8390         -              Normal
  04/25/2026 11 PM PDT          129.23           8439         +              Normal
  04/26/2026 12 AM PDT          129.23           8439         0              Normal
  04/26/2026 01 AM PDT          129.24           8464         +              Normal
  04/26/2026 02 AM PDT          129.24           8464         0              Normal
  04/26/2026 03 AM PDT          129.23           8439         -              Normal
  04/26/2026 04 AM PDT          129.24           8464         +              Normal
  04/26/2026 05 AM PDT          129.20           8365         -              Normal
  04/26/2026 06 AM PDT          129.18           8314         -              Normal
  04/26/2026 07 AM PDT          129.19           8340         +              Normal
  04/26/2026 08 AM PDT          129.19           8340         0              Normal
  04/26/2026 09 AM PDT          129.16           8264         -              Normal
  04/26/2026 10 AM PDT          129.17           8289         +              Normal
  04/26/2026 11 AM PDT          129.16           8264         -              Normal
  04/26/2026 12 PM PDT          129.14           8214         -              Normal
  04/26/2026 01 PM PDT          129.16           8264         +              Normal
  04/26/2026 02 PM PDT          129.18           8314         +              Normal
  04/26/2026 03 PM PDT          129.15           8239         -              Normal
  04/26/2026 04 PM PDT          129.15           8239         0              Normal
  04/26/2026 05 PM PDT          129.15           8239         0              Normal
  04/26/2026 06 PM PDT          129.17           8289         +              Normal
  04/26/2026 07 PM PDT          129.16           8264         -              Normal
  04/26/2026 08 PM PDT          129.16           8264         0              Normal
  04/26/2026 09 PM PDT          129.16           8264         0              Normal
  04/26/2026 10 PM PDT          129.17           8289         +              Normal
  04/26/2026 11 PM PDT          129.17           8289         0              Normal
  04/27/2026 12 AM PDT          129.17           8289         0              Normal
  04/27/2026 01 AM PDT          129.16           8264         -              Normal
  04/27/2026 02 AM PDT          129.16           8264         0              Normal
  04/27/2026 03 AM PDT          129.16           8264         0              Normal
  04/27/2026 04 AM PDT          129.16           8264         0              Normal
  04/27/2026 05 AM PDT          129.16           8264         0              Normal
  04/27/2026 06 AM PDT          129.17           8289         +              Normal
  04/27/2026 07 AM PDT          129.19           8340         +              Normal
  04/27/2026 08 AM PDT          129.22           8414         +              Normal
  04/27/2026 09 AM PDT          129.25           8489         +              Normal
  04/27/2026 10 AM PDT          129.28           8564         +              Normal
  04/27/2026 11 AM PDT          129.30           8615         +              Normal
  04/27/2026 12 PM PDT          129.32           8665         +              Normal
  04/27/2026 01 PM PDT          129.33           8690         +              Normal
  04/27/2026 02 PM PDT          129.33           8690         0              Normal
  04/27/2026 03 PM PDT          129.33           8690         0              Normal
  04/27/2026 04 PM PDT          129.33           8690         0              Normal
  04/27/2026 05 PM PDT          129.32           8665         -              Normal
  04/27/2026 06 PM PDT          129.32           8665         0              Normal
  04/27/2026 07 PM PDT          129.33           8690         +              Normal
  04/27/2026 08 PM PDT          129.34           8715         +              Normal
  04/27/2026 09 PM PDT          129.35           8740         +              Normal
  04/27/2026 10 PM PDT          129.38           8815         +              Normal
  04/27/2026 11 PM PDT          129.39           8841         +              Normal
  04/28/2026 12 AM PDT          129.40           8866         +              Normal
  04/28/2026 01 AM PDT          129.40           8866         0              Normal
  04/28/2026 02 AM PDT          129.40           8866         0              Normal
  04/28/2026 03 AM PDT          129.39           8841         -              Normal
  04/28/2026 04 AM PDT          129.38           8815         -              Normal
  04/28/2026 05 AM PDT          129.37           8790         -              Normal
  04/28/2026 06 AM PDT          129.37           8790         0              Normal
  04/28/2026 07 AM PDT          129.36           8765         -              Normal
  04/28/2026 08 AM PDT          129.35           8740         -              Normal
  04/28/2026 09 AM PDT          129.34           8715         -              Normal
  04/28/2026 10 AM PDT          129.32           8665         -              Normal
  04/28/2026 11 AM PDT          129.30           8615         -              Normal
  04/28/2026 12 PM PDT          129.27           8539         -              Normal
  04/28/2026 01 PM PDT          129.26           8514         -              Normal
  04/28/2026 02 PM PDT          129.24           8464         -              Normal
  04/28/2026 03 PM PDT          129.22           8414         -              Normal
  04/28/2026 04 PM PDT          129.20           8365         -              Normal
  04/28/2026 05 PM PDT          129.18           8314         -              Normal
  04/28/2026 06 PM PDT          129.16           8264         -              Normal
  04/28/2026 07 PM PDT          129.14           8214         -              Normal
  04/28/2026 08 PM PDT          129.13           8189         -              Normal
  04/28/2026 09 PM PDT          129.11           8140         -              Normal
  04/28/2026 10 PM PDT          129.10           8115         -              Normal
  04/28/2026 11 PM PDT          129.09           8090         -              Normal
  04/29/2026 12 AM PDT          129.08           8065         -              Normal
  04/29/2026 01 AM PDT          129.08           8065         0              Normal
  04/29/2026 02 AM PDT          129.07           8040         -              Normal
  04/29/2026 03 AM PDT          129.07           8040         0              Normal
  04/29/2026 04 AM PDT          129.06           8014         -              Normal
  04/29/2026 05 AM PDT          129.05           7990         -              Normal
  04/29/2026 06 AM PDT          129.05           7990         0              Normal
  04/29/2026 07 AM PDT          129.06           8014         +              Normal
  04/29/2026 08 AM PDT          129.05           7990         -              Normal
  04/29/2026 09 AM PDT          129.05           7990         0              Normal
  04/29/2026 10 AM PDT          129.05           7990         0              Normal
  04/29/2026 11 AM PDT          129.04           7965         -              Normal
  04/29/2026 12 PM PDT          129.04           7965         0              Normal
  04/29/2026 01 PM PDT          129.03           7940         -              Normal
  04/29/2026 02 PM PDT          129.01           7891         -              Normal
  04/29/2026 03 PM PDT          129.01           7891         0              Normal
  04/29/2026 04 PM PDT          129.00           7866         -              Normal
  04/29/2026 05 PM PDT          128.98           7816         -              Normal
  04/29/2026 06 PM PDT          128.98           7816         0              Normal
  04/29/2026 07 PM PDT          128.96           7766         -              Normal
  04/29/2026 08 PM PDT          128.96           7766         0              Normal
  04/29/2026 09 PM PDT          128.95           7741         -              Normal
  04/29/2026 10 PM PDT          128.95           7741         0              Normal
  04/29/2026 11 PM PDT          128.94           7716         -              Normal
  04/30/2026 12 AM PDT          128.94           7716         0              Normal
  04/30/2026 01 AM PDT          128.94           7716         0              Normal
  04/30/2026 02 AM PDT          128.93           7692         -              Normal
  04/30/2026 03 AM PDT          128.93           7692         0              Normal
  04/30/2026 04 AM PDT          128.92           7667         -              Normal
  04/30/2026 05 AM PDT          128.93           7692         +              Normal
  04/30/2026 06 AM PDT          128.93           7692         0              Normal
  04/30/2026 07 AM PDT          128.94           7716         +              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/30/2026 08 AM PDT          128.95           7741                        Normal
  04/30/2026 09 AM PDT          128.96           7766         +              Normal
  04/30/2026 10 AM PDT          128.97           7791         +              Normal
  04/30/2026 11 AM PDT          128.97           7791         0              Normal
  04/30/2026 12 PM PDT          128.98           7816         +              Normal
  04/30/2026 01 PM PDT          128.98           7816         0              Normal
  04/30/2026 02 PM PDT          128.98           7816         0              Normal
  04/30/2026 03 PM PDT          128.97           7791         -              Normal
  04/30/2026 04 PM PDT          128.96           7766         -              Normal
  04/30/2026 05 PM PDT          128.95           7741         -              Normal
  04/30/2026 06 PM PDT          128.94           7716         -              Normal
  04/30/2026 07 PM PDT          128.93           7692         -              Normal
  04/30/2026 08 PM PDT          128.91           7642         -              Normal
  04/30/2026 09 PM PDT          128.91           7642         0              Normal
  04/30/2026 10 PM PDT          128.90           7618         -              Normal
  04/30/2026 11 PM PDT          128.89           7593         -              Normal
  05/01/2026 12 AM PDT          128.88           7568         -              Normal
  05/01/2026 01 AM PDT          128.88           7568         0              Normal
  05/01/2026 02 AM PDT          128.88           7568         0              Normal
  05/01/2026 03 AM PDT          128.88           7568         0              Normal
  05/01/2026 04 AM PDT          128.87           7543         -              Normal
  05/01/2026 05 AM PDT          128.87           7543         0              Normal
  05/01/2026 06 AM PDT          128.87           7543         0              Normal
  05/01/2026 07 AM PDT          128.87           7543         0              Normal
  05/01/2026 08 AM PDT          128.87           7543         0              Normal
  05/01/2026 09 AM PDT          128.87           7543         0              Normal
  05/01/2026 10 AM PDT          128.87           7543         0              Normal
  05/01/2026 11 AM PDT          128.87           7543         0              Normal
  05/01/2026 12 PM PDT          128.87           7543         0              Normal
  05/01/2026 01 PM PDT          128.87           7543         0              Normal
  05/01/2026 02 PM PDT          128.87           7543         0              Normal
  05/01/2026 03 PM PDT          128.87           7543         0              Normal
  05/01/2026 04 PM PDT          128.87           7543         0              Normal
  05/01/2026 05 PM PDT          128.87           7543         0              Normal
  05/01/2026 06 PM PDT          128.86           7518         -              Normal
  05/01/2026 07 PM PDT          128.86           7518         0              Normal
  05/01/2026 08 PM PDT          128.86           7518         0              Normal
  05/01/2026 09 PM PDT          128.86           7518         0              Normal
  05/01/2026 10 PM PDT          128.86           7518         0              Normal
  05/01/2026 11 PM PDT          128.85           7493         -              Normal
  05/02/2026 12 AM PDT          128.85           7493         0              Normal
  05/02/2026 01 AM PDT          128.85           7493         0              Normal
  05/02/2026 02 AM PDT          128.85           7493         0              Normal
  05/02/2026 03 AM PDT          128.84           7468         -              Normal
  05/02/2026 04 AM PDT          128.84           7468         0              Normal
  05/02/2026 05 AM PDT          128.84           7468         0              Normal
  05/02/2026 06 AM PDT          128.84           7468         0              Normal
  05/02/2026 07 AM PDT          128.84           7468         0              Normal
  05/02/2026 08 AM PDT          128.83           7444         -              Normal
  05/02/2026 09 AM PDT          128.83           7444         0              Normal
  05/02/2026 10 AM PDT          128.83           7444         0              Normal
  05/02/2026 11 AM PDT          128.83           7444         0              Normal
  05/02/2026 12 PM PDT          128.83           7444         0              Normal
  05/02/2026 01 PM PDT          128.83           7444         0              Normal
  05/02/2026 02 PM PDT          128.82           7419         -              Normal
  05/02/2026 03 PM PDT          128.82           7419         0              Normal
  05/02/2026 04 PM PDT          128.82           7419         0              Normal
  05/02/2026 05 PM PDT          128.82           7419         0              Normal
  05/02/2026 06 PM PDT          128.82           7419         0              Normal
  05/02/2026 07 PM PDT          128.81           7394         -              Normal
  05/02/2026 08 PM PDT          128.81           7394         0              Normal
  05/02/2026 09 PM PDT          128.81           7394         0              Normal
  05/02/2026 10 PM PDT          128.81           7394         0              Normal
  05/02/2026 11 PM PDT          128.80           7370         -              Normal
  05/03/2026 12 AM PDT          128.80           7370         0              Normal
  05/03/2026 01 AM PDT          128.80           7370         0              Normal
  05/03/2026 02 AM PDT          128.79           7345         -              Normal
  05/03/2026 03 AM PDT          128.79           7345         0              Normal
  05/03/2026 04 AM PDT          128.79           7345         0              Normal
  05/03/2026 05 AM PDT          128.79           7345         0              Normal
  05/03/2026 06 AM PDT          128.78           7320         -              Normal
  05/03/2026 07 AM PDT          128.78           7320         0              Normal
  05/03/2026 08 AM PDT          128.78           7320         0              Normal
  05/03/2026 09 AM PDT          128.78           7320         0              Normal
  05/03/2026 10 AM PDT          128.78           7320         0              Normal
  05/03/2026 11 AM PDT          128.77           7295         -              Normal
  05/03/2026 12 PM PDT          128.77           7295         0              Normal
  05/03/2026 01 PM PDT          128.77           7295         0              Normal
  05/03/2026 02 PM PDT          128.77           7295         0              Normal
  05/03/2026 03 PM PDT          128.77           7295         0              Normal
  05/03/2026 04 PM PDT          128.76           7270         -              Normal
  05/03/2026 05 PM PDT          128.76           7270         0              Normal
  05/03/2026 06 PM PDT          128.76           7270         0              Normal
  05/03/2026 07 PM PDT          128.76           7270         0              Normal
  05/03/2026 08 PM PDT          128.76           7270         0              Normal
  05/03/2026 09 PM PDT          128.75           7245         -              Normal
  05/03/2026 10 PM PDT          128.75           7245         0              Normal
  05/03/2026 11 PM PDT          128.75           7245         0              Normal
  05/04/2026 12 AM PDT          128.75           7245         0              Normal
  05/04/2026 01 AM PDT          128.75           7245         0              Normal
  05/04/2026 02 AM PDT          128.75           7245         0              Normal
  05/04/2026 03 AM PDT          128.75           7245         0              Normal
  05/04/2026 04 AM PDT          128.76           7270         +              Normal
  05/04/2026 05 AM PDT          128.77           7295         +              Normal
  05/04/2026 06 AM PDT          128.78           7320         +              Normal
  05/04/2026 07 AM PDT          128.79           7345         +              Normal
  05/04/2026 08 AM PDT          128.80           7370         +              Normal
  05/04/2026 09 AM PDT          128.81           7394         +              Normal
  05/04/2026 10 AM PDT          128.82           7419         +              Normal
  05/04/2026 11 AM PDT          128.83           7444         +              Normal
  05/04/2026 12 PM PDT          128.84           7468         +              Normal
  05/04/2026 01 PM PDT          128.85           7493         +              Normal
  05/04/2026 02 PM PDT          128.87           7543         +              Normal
  05/04/2026 03 PM PDT          128.88           7568         +              Normal
  05/04/2026 04 PM PDT          128.89           7593         +              Normal
  05/04/2026 05 PM PDT          128.90           7618         +              Normal
  05/04/2026 06 PM PDT          128.91           7642         +              Normal
  05/04/2026 07 PM PDT          128.92           7667         +              Normal
  05/04/2026 08 PM PDT          128.94           7716         +              Normal
  05/04/2026 09 PM PDT          128.95           7741         +              Normal
  05/04/2026 10 PM PDT          128.96           7766         +              Normal
  05/04/2026 11 PM PDT          128.97           7791         +              Normal
  05/05/2026 12 AM PDT          128.99           7841         +              Normal
  05/05/2026 01 AM PDT          129.00           7866         +              Normal
  05/05/2026 02 AM PDT          129.02           7915         +              Normal
  05/05/2026 03 AM PDT          129.03           7940         +              Normal
  05/05/2026 04 AM PDT          129.04           7965         +              Normal
  05/05/2026 05 AM PDT          129.05           7990         +              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.