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: Sep 19 2026 at 8:07 AM PDTNext Issuance: Sep 20 2026 at 9:00 AM PDT
Action: 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:  09/19/2026 at 08:07 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  09/18/2026 at 06:00 PM PDT
# Maximum Observed Stage:                       128.00 Feet
# Maximum Observed Flow:                        5420 cfs
#
# Earliest Date & Time of Maximum Forecast:     09/24/2026 at 05:00 AM PDT
# Maximum Forecast Stage:                       127.88 Feet
# Maximum Forecast Flow:                        5151 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  09/14/2026 08 AM PDT          127.95           5307                        Normal
  09/14/2026 09 AM PDT          127.94           5284         -              Normal
  09/14/2026 10 AM PDT          127.94           5284         0              Normal
  09/14/2026 11 AM PDT          127.95           5307         +              Normal
  09/14/2026 12 PM PDT          127.96           5329         +              Normal
  09/14/2026 01 PM PDT          127.97           5352         +              Normal
  09/14/2026 02 PM PDT          127.96           5329         -              Normal
  09/14/2026 03 PM PDT          127.98           5374         +              Normal
  09/14/2026 04 PM PDT          127.98           5374         0              Normal
  09/14/2026 05 PM PDT          127.98           5374         0              Normal
  09/14/2026 06 PM PDT          127.98           5374         0              Normal
  09/14/2026 07 PM PDT          127.99           5397         +              Normal
  09/14/2026 08 PM PDT          127.99           5397         0              Normal
  09/14/2026 09 PM PDT          128.00           5420         +              Normal
  09/14/2026 10 PM PDT          128.00           5420         0              Normal
  09/14/2026 11 PM PDT          127.98           5374         -              Normal
  09/15/2026 12 AM PDT          127.97           5352         -              Normal
  09/15/2026 01 AM PDT          127.94           5284         -              Normal
  09/15/2026 02 AM PDT          127.93           5262         -              Normal
  09/15/2026 03 AM PDT          127.93           5262         0              Normal
  09/15/2026 04 AM PDT          127.92           5240         -              Normal
  09/15/2026 05 AM PDT          127.92           5240         0              Normal
  09/15/2026 06 AM PDT          127.92           5240         0              Normal
  09/15/2026 07 AM PDT          127.92           5240         0              Normal
  09/15/2026 08 AM PDT          127.91           5218         -              Normal
  09/15/2026 09 AM PDT          127.90           5196         -              Normal
  09/15/2026 10 AM PDT          127.90           5196         0              Normal
  09/15/2026 11 AM PDT          127.90           5196         0              Normal
  09/15/2026 12 PM PDT          127.90           5196         0              Normal
  09/15/2026 01 PM PDT          127.90           5196         0              Normal
  09/15/2026 02 PM PDT          127.89           5173         -              Normal
  09/15/2026 03 PM PDT          127.90           5196         +              Normal
  09/15/2026 04 PM PDT          127.92           5240         +              Normal
  09/15/2026 05 PM PDT          127.92           5240         0              Normal
  09/15/2026 06 PM PDT          127.92           5240         0              Normal
  09/15/2026 07 PM PDT          127.92           5240         0              Normal
  09/15/2026 08 PM PDT          127.92           5240         0              Normal
  09/15/2026 09 PM PDT          127.91           5218         -              Normal
  09/15/2026 10 PM PDT          127.93           5262         +              Normal
  09/15/2026 11 PM PDT          127.92           5240         -              Normal
  09/16/2026 12 AM PDT          127.89           5173         -              Normal
  09/16/2026 01 AM PDT          127.90           5196         +              Normal
  09/16/2026 02 AM PDT          127.92           5240         +              Normal
  09/16/2026 03 AM PDT          127.93           5262         +              Normal
  09/16/2026 04 AM PDT          127.93           5262         0              Normal
  09/16/2026 05 AM PDT          127.94           5284         +              Normal
  09/16/2026 06 AM PDT          127.94           5284         0              Normal
  09/16/2026 07 AM PDT          127.93           5262         -              Normal
  09/16/2026 08 AM PDT          127.95           5307         +              Normal
  09/16/2026 09 AM PDT          127.94           5284         -              Normal
  09/16/2026 10 AM PDT          127.96           5329         +              Normal
  09/16/2026 11 AM PDT          127.93           5262         -              Normal
  09/16/2026 12 PM PDT          127.93           5262         0              Normal
  09/16/2026 01 PM PDT          127.94           5284         +              Normal
  09/16/2026 02 PM PDT          127.94           5284         0              Normal
  09/16/2026 03 PM PDT          127.95           5307         +              Normal
  09/16/2026 04 PM PDT          127.97           5352         +              Normal
  09/16/2026 05 PM PDT          127.98           5374         +              Normal
  09/16/2026 06 PM PDT          127.97           5352         -              Normal
  09/16/2026 07 PM PDT          127.97           5352         0              Normal
  09/16/2026 08 PM PDT          127.98           5374         +              Normal
  09/16/2026 09 PM PDT          127.98           5374         0              Normal
  09/16/2026 10 PM PDT          127.96           5329         -              Normal
  09/16/2026 11 PM PDT          127.98           5374         +              Normal
  09/17/2026 12 AM PDT          127.97           5352         -              Normal
  09/17/2026 01 AM PDT          127.97           5352         0              Normal
  09/17/2026 02 AM PDT          127.96           5329         -              Normal
  09/17/2026 03 AM PDT          127.95           5307         -              Normal
  09/17/2026 04 AM PDT          127.94           5284         -              Normal
  09/17/2026 05 AM PDT          127.93           5262         -              Normal
  09/17/2026 06 AM PDT          127.93           5262         0              Normal
  09/17/2026 07 AM PDT          127.92           5240         -              Normal
  09/17/2026 08 AM PDT          127.92           5240         0              Normal
  09/17/2026 09 AM PDT          127.92           5240         0              Normal
  09/17/2026 10 AM PDT          127.90           5196         -              Normal
  09/17/2026 11 AM PDT          127.91           5218         +              Normal
  09/17/2026 12 PM PDT          127.91           5218         0              Normal
  09/17/2026 01 PM PDT          127.93           5262         +              Normal
  09/17/2026 02 PM PDT          127.92           5240         -              Normal
  09/17/2026 03 PM PDT          127.93           5262         +              Normal
  09/17/2026 04 PM PDT          127.93           5262         0              Normal
  09/17/2026 05 PM PDT          127.93           5262         0              Normal
  09/17/2026 06 PM PDT          127.93           5262         0              Normal
  09/17/2026 07 PM PDT          127.92           5240         -              Normal
  09/17/2026 08 PM PDT          127.92           5240         0              Normal
  09/17/2026 09 PM PDT          127.92           5240         0              Normal
  09/17/2026 10 PM PDT          127.92           5240         0              Normal
  09/17/2026 11 PM PDT          127.92           5240         0              Normal
  09/18/2026 12 AM PDT          127.93           5262         +              Normal
  09/18/2026 01 AM PDT          127.93           5262         0              Normal
  09/18/2026 02 AM PDT          127.94           5284         +              Normal
  09/18/2026 03 AM PDT          127.95           5307         +              Normal
  09/18/2026 04 AM PDT          127.96           5329         +              Normal
  09/18/2026 05 AM PDT          127.97           5352         +              Normal
  09/18/2026 06 AM PDT          127.97           5352         0              Normal
  09/18/2026 07 AM PDT          127.97           5352         0              Normal
  09/18/2026 08 AM PDT          127.98           5374         +              Normal
  09/18/2026 09 AM PDT          127.98           5374         0              Normal
  09/18/2026 10 AM PDT          127.98           5374         0              Normal
  09/18/2026 11 AM PDT          127.99           5397         +              Normal
  09/18/2026 12 PM PDT          127.99           5397         0              Normal
  09/18/2026 01 PM PDT          127.99           5397         0              Normal
  09/18/2026 02 PM PDT          128.00           5420         +              Normal
  09/18/2026 03 PM PDT          127.99           5397         -              Normal
  09/18/2026 04 PM PDT          128.00           5420         +              Normal
  09/18/2026 05 PM PDT          128.00           5420         0              Normal
  09/18/2026 06 PM PDT          128.00           5420         0              Normal
  09/18/2026 07 PM PDT          127.99           5397         -              Normal
  09/18/2026 08 PM PDT          127.99           5397         0              Normal
  09/18/2026 09 PM PDT          127.99           5397         0              Normal
  09/18/2026 10 PM PDT          127.99           5397         0              Normal
  09/18/2026 11 PM PDT          127.99           5397         0              Normal
  09/19/2026 12 AM PDT          127.98           5374         -              Normal
  09/19/2026 01 AM PDT          127.97           5352         -              Normal
  09/19/2026 02 AM PDT          127.96           5329         -              Normal
  09/19/2026 03 AM PDT          127.94           5284         -              Normal
  09/19/2026 04 AM PDT          127.92           5240         -              Normal
  09/19/2026 05 AM PDT          127.90           5196         -              Normal
  09/19/2026 06 AM PDT          127.89           5173         -              Normal
  09/19/2026 07 AM PDT          127.88           5151         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  09/19/2026 08 AM PDT          127.87           5128                        Normal
  09/19/2026 09 AM PDT          127.86           5106         -              Normal
  09/19/2026 10 AM PDT          127.85           5083         -              Normal
  09/19/2026 11 AM PDT          127.85           5083         0              Normal
  09/19/2026 12 PM PDT          127.84           5061         -              Normal
  09/19/2026 01 PM PDT          127.84           5061         0              Normal
  09/19/2026 02 PM PDT          127.84           5061         0              Normal
  09/19/2026 03 PM PDT          127.84           5061         0              Normal
  09/19/2026 04 PM PDT          127.84           5061         0              Normal
  09/19/2026 05 PM PDT          127.85           5083         +              Normal
  09/19/2026 06 PM PDT          127.85           5083         0              Normal
  09/19/2026 07 PM PDT          127.85           5083         0              Normal
  09/19/2026 08 PM PDT          127.85           5083         0              Normal
  09/19/2026 09 PM PDT          127.85           5083         0              Normal
  09/19/2026 10 PM PDT          127.85           5083         0              Normal
  09/19/2026 11 PM PDT          127.85           5083         0              Normal
  09/20/2026 12 AM PDT          127.85           5083         0              Normal
  09/20/2026 01 AM PDT          127.86           5106         +              Normal
  09/20/2026 02 AM PDT          127.86           5106         0              Normal
  09/20/2026 03 AM PDT          127.86           5106         0              Normal
  09/20/2026 04 AM PDT          127.86           5106         0              Normal
  09/20/2026 05 AM PDT          127.86           5106         0              Normal
  09/20/2026 06 AM PDT          127.86           5106         0              Normal
  09/20/2026 07 AM PDT          127.86           5106         0              Normal
  09/20/2026 08 AM PDT          127.86           5106         0              Normal
  09/20/2026 09 AM PDT          127.86           5106         0              Normal
  09/20/2026 10 AM PDT          127.86           5106         0              Normal
  09/20/2026 11 AM PDT          127.86           5106         0              Normal
  09/20/2026 12 PM PDT          127.86           5106         0              Normal
  09/20/2026 01 PM PDT          127.86           5106         0              Normal
  09/20/2026 02 PM PDT          127.86           5106         0              Normal
  09/20/2026 03 PM PDT          127.86           5106         0              Normal
  09/20/2026 04 PM PDT          127.86           5106         0              Normal
  09/20/2026 05 PM PDT          127.86           5106         0              Normal
  09/20/2026 06 PM PDT          127.86           5106         0              Normal
  09/20/2026 07 PM PDT          127.86           5106         0              Normal
  09/20/2026 08 PM PDT          127.86           5106         0              Normal
  09/20/2026 09 PM PDT          127.86           5106         0              Normal
  09/20/2026 10 PM PDT          127.86           5106         0              Normal
  09/20/2026 11 PM PDT          127.86           5106         0              Normal
  09/21/2026 12 AM PDT          127.86           5106         0              Normal
  09/21/2026 01 AM PDT          127.86           5106         0              Normal
  09/21/2026 02 AM PDT          127.86           5106         0              Normal
  09/21/2026 03 AM PDT          127.86           5106         0              Normal
  09/21/2026 04 AM PDT          127.86           5106         0              Normal
  09/21/2026 05 AM PDT          127.86           5106         0              Normal
  09/21/2026 06 AM PDT          127.86           5106         0              Normal
  09/21/2026 07 AM PDT          127.86           5106         0              Normal
  09/21/2026 08 AM PDT          127.86           5106         0              Normal
  09/21/2026 09 AM PDT          127.86           5106         0              Normal
  09/21/2026 10 AM PDT          127.86           5106         0              Normal
  09/21/2026 11 AM PDT          127.86           5106         0              Normal
  09/21/2026 12 PM PDT          127.86           5106         0              Normal
  09/21/2026 01 PM PDT          127.86           5106         0              Normal
  09/21/2026 02 PM PDT          127.86           5106         0              Normal
  09/21/2026 03 PM PDT          127.86           5106         0              Normal
  09/21/2026 04 PM PDT          127.86           5106         0              Normal
  09/21/2026 05 PM PDT          127.86           5106         0              Normal
  09/21/2026 06 PM PDT          127.86           5106         0              Normal
  09/21/2026 07 PM PDT          127.86           5106         0              Normal
  09/21/2026 08 PM PDT          127.86           5106         0              Normal
  09/21/2026 09 PM PDT          127.86           5106         0              Normal
  09/21/2026 10 PM PDT          127.86           5106         0              Normal
  09/21/2026 11 PM PDT          127.86           5106         0              Normal
  09/22/2026 12 AM PDT          127.86           5106         0              Normal
  09/22/2026 01 AM PDT          127.86           5106         0              Normal
  09/22/2026 02 AM PDT          127.86           5106         0              Normal
  09/22/2026 03 AM PDT          127.86           5106         0              Normal
  09/22/2026 04 AM PDT          127.86           5106         0              Normal
  09/22/2026 05 AM PDT          127.86           5106         0              Normal
  09/22/2026 06 AM PDT          127.86           5106         0              Normal
  09/22/2026 07 AM PDT          127.86           5106         0              Normal
  09/22/2026 08 AM PDT          127.86           5106         0              Normal
  09/22/2026 09 AM PDT          127.86           5106         0              Normal
  09/22/2026 10 AM PDT          127.86           5106         0              Normal
  09/22/2026 11 AM PDT          127.87           5128         +              Normal
  09/22/2026 12 PM PDT          127.87           5128         0              Normal
  09/22/2026 01 PM PDT          127.87           5128         0              Normal
  09/22/2026 02 PM PDT          127.87           5128         0              Normal
  09/22/2026 03 PM PDT          127.87           5128         0              Normal
  09/22/2026 04 PM PDT          127.87           5128         0              Normal
  09/22/2026 05 PM PDT          127.87           5128         0              Normal
  09/22/2026 06 PM PDT          127.87           5128         0              Normal
  09/22/2026 07 PM PDT          127.87           5128         0              Normal
  09/22/2026 08 PM PDT          127.87           5128         0              Normal
  09/22/2026 09 PM PDT          127.87           5128         0              Normal
  09/22/2026 10 PM PDT          127.87           5128         0              Normal
  09/22/2026 11 PM PDT          127.87           5128         0              Normal
  09/23/2026 12 AM PDT          127.87           5128         0              Normal
  09/23/2026 01 AM PDT          127.87           5128         0              Normal
  09/23/2026 02 AM PDT          127.87           5128         0              Normal
  09/23/2026 03 AM PDT          127.87           5128         0              Normal
  09/23/2026 04 AM PDT          127.87           5128         0              Normal
  09/23/2026 05 AM PDT          127.87           5128         0              Normal
  09/23/2026 06 AM PDT          127.87           5128         0              Normal
  09/23/2026 07 AM PDT          127.87           5128         0              Normal
  09/23/2026 08 AM PDT          127.87           5128         0              Normal
  09/23/2026 09 AM PDT          127.87           5128         0              Normal
  09/23/2026 10 AM PDT          127.87           5128         0              Normal
  09/23/2026 11 AM PDT          127.87           5128         0              Normal
  09/23/2026 12 PM PDT          127.87           5128         0              Normal
  09/23/2026 01 PM PDT          127.87           5128         0              Normal
  09/23/2026 02 PM PDT          127.87           5128         0              Normal
  09/23/2026 03 PM PDT          127.87           5128         0              Normal
  09/23/2026 04 PM PDT          127.87           5128         0              Normal
  09/23/2026 05 PM PDT          127.87           5128         0              Normal
  09/23/2026 06 PM PDT          127.87           5128         0              Normal
  09/23/2026 07 PM PDT          127.87           5128         0              Normal
  09/23/2026 08 PM PDT          127.87           5128         0              Normal
  09/23/2026 09 PM PDT          127.87           5128         0              Normal
  09/23/2026 10 PM PDT          127.87           5128         0              Normal
  09/23/2026 11 PM PDT          127.87           5128         0              Normal
  09/24/2026 12 AM PDT          127.87           5128         0              Normal
  09/24/2026 01 AM PDT          127.87           5128         0              Normal
  09/24/2026 02 AM PDT          127.87           5128         0              Normal
  09/24/2026 03 AM PDT          127.87           5128         0              Normal
  09/24/2026 04 AM PDT          127.87           5128         0              Normal
  09/24/2026 05 AM PDT          127.88           5151         +              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.