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NAPA RIVER - SAINT HELENA (SHEC1)
| Latitude: 38.51º N | Longitude: 122.45º W | Elevation: 195 Feet | | Forecast Type: Official Location |
| Location: Napa County in California | Bulletin Group: Russian Napa | River Group: Russian Napa |
| Issuance Time: | Jun 28 2026 at 7:12 AM PDT | Next Issuance: | Jun 29 2026 at 9:00 AM PDT
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| Action/Monitor: 16.0 Feet | Minor Flood: 18.0 Feet | Moderate Flood: 20.0 Feet | Major Flood: 22.0 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: Napa River - Saint Helena (SHEC1)
#
# File Generation Time: 06/28/2026 at 07:12 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 06/25/2026 at 11:00 AM PDT
# Maximum Observed Stage: 1.51 Feet
# Maximum Observed Flow: 5 cfs
#
# Earliest Date & Time of Maximum Forecast: 06/28/2026 at 08:00 AM PDT
# Maximum Forecast Stage: 1.47 Feet
# Maximum Forecast Flow: 4 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
06/23/2026 07 AM PDT 1.50 5 Normal
06/23/2026 08 AM PDT 1.50 5 0 Normal
06/23/2026 09 AM PDT 1.51 5 + Normal
06/23/2026 10 AM PDT 1.51 5 0 Normal
06/23/2026 11 AM PDT 1.51 5 0 Normal
06/23/2026 12 PM PDT 1.51 5 0 Normal
06/23/2026 01 PM PDT 1.51 5 0 Normal
06/23/2026 02 PM PDT 1.51 5 0 Normal
06/23/2026 03 PM PDT 1.51 5 0 Normal
06/23/2026 04 PM PDT 1.51 5 0 Normal
06/23/2026 05 PM PDT 1.51 5 0 Normal
06/23/2026 06 PM PDT 1.51 5 0 Normal
06/23/2026 07 PM PDT 1.50 5 - Normal
06/23/2026 08 PM PDT 1.50 5 0 Normal
06/23/2026 09 PM PDT 1.50 5 0 Normal
06/23/2026 10 PM PDT 1.49 5 - Normal
06/23/2026 11 PM PDT 1.49 5 0 Normal
06/24/2026 12 AM PDT 1.49 5 0 Normal
06/24/2026 01 AM PDT 1.48 4 - Normal
06/24/2026 02 AM PDT 1.48 4 0 Normal
06/24/2026 03 AM PDT 1.48 4 0 Normal
06/24/2026 04 AM PDT 1.49 5 + Normal
06/24/2026 05 AM PDT 1.49 5 0 Normal
06/24/2026 06 AM PDT 1.49 5 0 Normal
06/24/2026 07 AM PDT 1.50 5 + Normal
06/24/2026 08 AM PDT 1.50 5 0 Normal
06/24/2026 09 AM PDT 1.50 5 0 Normal
06/24/2026 10 AM PDT 1.50 5 0 Normal
06/24/2026 11 AM PDT 1.51 5 + Normal
06/24/2026 12 PM PDT 1.50 5 - Normal
06/24/2026 01 PM PDT 1.50 5 0 Normal
06/24/2026 02 PM PDT 1.50 5 0 Normal
06/24/2026 03 PM PDT 1.50 5 0 Normal
06/24/2026 04 PM PDT 1.50 5 0 Normal
06/24/2026 05 PM PDT 1.50 5 0 Normal
06/24/2026 06 PM PDT 1.49 5 - Normal
06/24/2026 07 PM PDT 1.49 5 0 Normal
06/24/2026 08 PM PDT 1.49 5 0 Normal
06/24/2026 09 PM PDT 1.49 5 0 Normal
06/24/2026 10 PM PDT 1.49 5 0 Normal
06/24/2026 11 PM PDT 1.48 4 - Normal
06/25/2026 12 AM PDT 1.48 4 0 Normal
06/25/2026 01 AM PDT 1.48 4 0 Normal
06/25/2026 02 AM PDT 1.49 5 + Normal
06/25/2026 03 AM PDT 1.49 5 0 Normal
06/25/2026 04 AM PDT 1.50 5 + Normal
06/25/2026 05 AM PDT 1.50 5 0 Normal
06/25/2026 06 AM PDT 1.49 5 - Normal
06/25/2026 07 AM PDT 1.49 5 0 Normal
06/25/2026 08 AM PDT 1.50 5 + Normal
06/25/2026 09 AM PDT 1.50 5 0 Normal
06/25/2026 10 AM PDT 1.50 5 0 Normal
06/25/2026 11 AM PDT 1.51 5 + Normal
06/25/2026 12 PM PDT 1.50 5 - Normal
06/25/2026 01 PM PDT 1.50 5 0 Normal
06/25/2026 02 PM PDT 1.50 5 0 Normal
06/25/2026 03 PM PDT 1.50 5 0 Normal
06/25/2026 04 PM PDT 1.50 5 0 Normal
06/25/2026 05 PM PDT 1.50 5 0 Normal
06/25/2026 06 PM PDT 1.50 5 0 Normal
06/25/2026 07 PM PDT 1.50 5 0 Normal
06/25/2026 08 PM PDT 1.49 5 - Normal
06/25/2026 09 PM PDT 1.49 5 0 Normal
06/25/2026 10 PM PDT 1.49 5 0 Normal
06/25/2026 11 PM PDT 1.49 5 0 Normal
06/26/2026 12 AM PDT 1.48 4 - Normal
06/26/2026 01 AM PDT 1.47 4 - Normal
06/26/2026 02 AM PDT 1.48 4 + Normal
06/26/2026 03 AM PDT 1.49 5 + Normal
06/26/2026 04 AM PDT 1.49 5 0 Normal
06/26/2026 05 AM PDT 1.49 5 0 Normal
06/26/2026 06 AM PDT 1.49 5 0 Normal
06/26/2026 07 AM PDT 1.49 5 0 Normal
06/26/2026 08 AM PDT 1.49 5 0 Normal
06/26/2026 09 AM PDT 1.48 4 - Normal
06/26/2026 10 AM PDT 1.48 4 0 Normal
06/26/2026 11 AM PDT 1.47 4 - Normal
06/26/2026 12 PM PDT 1.47 4 0 Normal
06/26/2026 01 PM PDT 1.47 4 0 Normal
06/26/2026 02 PM PDT 1.46 4 - Normal
06/26/2026 03 PM PDT 1.46 4 0 Normal
06/26/2026 04 PM PDT 1.46 4 0 Normal
06/26/2026 05 PM PDT 1.46 4 0 Normal
06/26/2026 06 PM PDT 1.46 4 0 Normal
06/26/2026 07 PM PDT 1.45 4 - Normal
06/26/2026 08 PM PDT 1.45 4 0 Normal
06/26/2026 09 PM PDT 1.45 4 0 Normal
06/26/2026 10 PM PDT 1.44 3 - Normal
06/26/2026 11 PM PDT 1.44 3 0 Normal
06/27/2026 12 AM PDT 1.43 3 - Normal
06/27/2026 01 AM PDT 1.43 3 0 Normal
06/27/2026 02 AM PDT 1.43 3 0 Normal
06/27/2026 03 AM PDT 1.43 3 0 Normal
06/27/2026 04 AM PDT 1.44 3 + Normal
06/27/2026 05 AM PDT 1.44 3 0 Normal
06/27/2026 06 AM PDT 1.45 4 + Normal
06/27/2026 07 AM PDT 1.44 3 - Normal
06/27/2026 08 AM PDT 1.45 4 + Normal
06/27/2026 09 AM PDT 1.46 4 + Normal
06/27/2026 10 AM PDT 1.46 4 0 Normal
06/27/2026 11 AM PDT 1.46 4 0 Normal
06/27/2026 12 PM PDT 1.46 4 0 Normal
06/27/2026 01 PM PDT 1.46 4 0 Normal
06/27/2026 02 PM PDT 1.46 4 0 Normal
06/27/2026 03 PM PDT 1.46 4 0 Normal
06/27/2026 04 PM PDT 1.45 4 - Normal
06/27/2026 05 PM PDT 1.44 3 - Normal
06/27/2026 06 PM PDT 1.45 4 + Normal
06/27/2026 07 PM PDT 1.47 4 + Normal
06/27/2026 08 PM PDT 1.47 4 0 Normal
06/27/2026 09 PM PDT 1.47 4 0 Normal
06/27/2026 10 PM PDT 1.47 4 0 Normal
06/27/2026 11 PM PDT 1.47 4 0 Normal
06/28/2026 12 AM PDT 1.47 4 0 Normal
06/28/2026 01 AM PDT 1.47 4 0 Normal
06/28/2026 02 AM PDT 1.47 4 0 Normal
06/28/2026 03 AM PDT 1.46 4 - Normal
06/28/2026 04 AM PDT 1.47 4 + Normal
06/28/2026 05 AM PDT 1.48 4 + Normal
06/28/2026 06 AM PDT 1.47 4 - Normal
06/28/2026 07 AM PDT 1.47 4 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
06/28/2026 08 AM PDT 1.47 4 Normal
06/28/2026 09 AM PDT 1.47 4 0 Normal
06/28/2026 10 AM PDT 1.47 4 0 Normal
06/28/2026 11 AM PDT 1.47 4 0 Normal
06/28/2026 12 PM PDT 1.47 4 0 Normal
06/28/2026 01 PM PDT 1.47 4 0 Normal
06/28/2026 02 PM PDT 1.47 4 0 Normal
06/28/2026 03 PM PDT 1.47 4 0 Normal
06/28/2026 04 PM PDT 1.47 4 0 Normal
06/28/2026 05 PM PDT 1.47 4 0 Normal
06/28/2026 06 PM PDT 1.47 4 0 Normal
06/28/2026 07 PM PDT 1.47 4 0 Normal
06/28/2026 08 PM PDT 1.47 4 0 Normal
06/28/2026 09 PM PDT 1.47 4 0 Normal
06/28/2026 10 PM PDT 1.47 4 0 Normal
06/28/2026 11 PM PDT 1.47 4 0 Normal
06/29/2026 12 AM PDT 1.47 4 0 Normal
06/29/2026 01 AM PDT 1.47 4 0 Normal
06/29/2026 02 AM PDT 1.47 4 0 Normal
06/29/2026 03 AM PDT 1.47 4 0 Normal
06/29/2026 04 AM PDT 1.47 4 0 Normal
06/29/2026 05 AM PDT 1.47 4 0 Normal
06/29/2026 06 AM PDT 1.47 4 0 Normal
06/29/2026 07 AM PDT 1.47 4 0 Normal
06/29/2026 08 AM PDT 1.47 4 0 Normal
06/29/2026 09 AM PDT 1.47 4 0 Normal
06/29/2026 10 AM PDT 1.47 4 0 Normal
06/29/2026 11 AM PDT 1.47 4 0 Normal
06/29/2026 12 PM PDT 1.47 4 0 Normal
06/29/2026 01 PM PDT 1.47 4 0 Normal
06/29/2026 02 PM PDT 1.47 4 0 Normal
06/29/2026 03 PM PDT 1.47 4 0 Normal
06/29/2026 04 PM PDT 1.47 4 0 Normal
06/29/2026 05 PM PDT 1.47 4 0 Normal
06/29/2026 06 PM PDT 1.47 4 0 Normal
06/29/2026 07 PM PDT 1.47 4 0 Normal
06/29/2026 08 PM PDT 1.47 4 0 Normal
06/29/2026 09 PM PDT 1.47 4 0 Normal
06/29/2026 10 PM PDT 1.47 4 0 Normal
06/29/2026 11 PM PDT 1.47 4 0 Normal
06/30/2026 12 AM PDT 1.47 4 0 Normal
06/30/2026 01 AM PDT 1.47 4 0 Normal
06/30/2026 02 AM PDT 1.47 4 0 Normal
06/30/2026 03 AM PDT 1.47 4 0 Normal
06/30/2026 04 AM PDT 1.47 4 0 Normal
06/30/2026 05 AM PDT 1.47 4 0 Normal
06/30/2026 06 AM PDT 1.47 4 0 Normal
06/30/2026 07 AM PDT 1.47 4 0 Normal
06/30/2026 08 AM PDT 1.47 4 0 Normal
06/30/2026 09 AM PDT 1.47 4 0 Normal
06/30/2026 10 AM PDT 1.47 4 0 Normal
06/30/2026 11 AM PDT 1.47 4 0 Normal
06/30/2026 12 PM PDT 1.47 4 0 Normal
06/30/2026 01 PM PDT 1.47 4 0 Normal
06/30/2026 02 PM PDT 1.47 4 0 Normal
06/30/2026 03 PM PDT 1.47 4 0 Normal
06/30/2026 04 PM PDT 1.47 4 0 Normal
06/30/2026 05 PM PDT 1.47 4 0 Normal
06/30/2026 06 PM PDT 1.47 4 0 Normal
06/30/2026 07 PM PDT 1.47 4 0 Normal
06/30/2026 08 PM PDT 1.47 4 0 Normal
06/30/2026 09 PM PDT 1.47 4 0 Normal
06/30/2026 10 PM PDT 1.47 4 0 Normal
06/30/2026 11 PM PDT 1.47 4 0 Normal
07/01/2026 12 AM PDT 1.47 4 0 Normal
07/01/2026 01 AM PDT 1.47 4 0 Normal
07/01/2026 02 AM PDT 1.47 4 0 Normal
07/01/2026 03 AM PDT 1.47 4 0 Normal
07/01/2026 04 AM PDT 1.47 4 0 Normal
07/01/2026 05 AM PDT 1.47 4 0 Normal
07/01/2026 06 AM PDT 1.47 4 0 Normal
07/01/2026 07 AM PDT 1.47 4 0 Normal
07/01/2026 08 AM PDT 1.47 4 0 Normal
07/01/2026 09 AM PDT 1.47 4 0 Normal
07/01/2026 10 AM PDT 1.47 4 0 Normal
07/01/2026 11 AM PDT 1.47 4 0 Normal
07/01/2026 12 PM PDT 1.47 4 0 Normal
07/01/2026 01 PM PDT 1.47 4 0 Normal
07/01/2026 02 PM PDT 1.47 4 0 Normal
07/01/2026 03 PM PDT 1.47 4 0 Normal
07/01/2026 04 PM PDT 1.47 4 0 Normal
07/01/2026 05 PM PDT 1.47 4 0 Normal
07/01/2026 06 PM PDT 1.47 4 0 Normal
07/01/2026 07 PM PDT 1.47 4 0 Normal
07/01/2026 08 PM PDT 1.47 4 0 Normal
07/01/2026 09 PM PDT 1.47 4 0 Normal
07/01/2026 10 PM PDT 1.47 4 0 Normal
07/01/2026 11 PM PDT 1.47 4 0 Normal
07/02/2026 12 AM PDT 1.47 4 0 Normal
07/02/2026 01 AM PDT 1.47 4 0 Normal
07/02/2026 02 AM PDT 1.47 4 0 Normal
07/02/2026 03 AM PDT 1.47 4 0 Normal
07/02/2026 04 AM PDT 1.47 4 0 Normal
07/02/2026 05 AM PDT 1.47 4 0 Normal
07/02/2026 06 AM PDT 1.47 4 0 Normal
07/02/2026 07 AM PDT 1.47 4 0 Normal
07/02/2026 08 AM PDT 1.47 4 0 Normal
07/02/2026 09 AM PDT 1.47 4 0 Normal
07/02/2026 10 AM PDT 1.47 4 0 Normal
07/02/2026 11 AM PDT 1.47 4 0 Normal
07/02/2026 12 PM PDT 1.47 4 0 Normal
07/02/2026 01 PM PDT 1.47 4 0 Normal
07/02/2026 02 PM PDT 1.47 4 0 Normal
07/02/2026 03 PM PDT 1.47 4 0 Normal
07/02/2026 04 PM PDT 1.47 4 0 Normal
07/02/2026 05 PM PDT 1.47 4 0 Normal
07/02/2026 06 PM PDT 1.47 4 0 Normal
07/02/2026 07 PM PDT 1.47 4 0 Normal
07/02/2026 08 PM PDT 1.47 4 0 Normal
07/02/2026 09 PM PDT 1.47 4 0 Normal
07/02/2026 10 PM PDT 1.47 4 0 Normal
07/02/2026 11 PM PDT 1.47 4 0 Normal
07/03/2026 12 AM PDT 1.47 4 0 Normal
07/03/2026 01 AM PDT 1.47 4 0 Normal
07/03/2026 02 AM PDT 1.47 4 0 Normal
07/03/2026 03 AM PDT 1.47 4 0 Normal
07/03/2026 04 AM PDT 1.47 4 0 Normal
07/03/2026 05 AM PDT 1.47 4 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.
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