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NAPA RIVER - SAINT HELENA (SHEC1)
| Latitude: 38.51º N | Longitude: 122.45º W | Elevation: 195 Feet | | | |
| Location: Napa County in California | Bulletin Group: Russian Napa | River Group: Russian Napa |
| Issuance Time: | Apr 30 2025 at 8:06 AM PDT | Next Issuance: | May 01 2025 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: 04/30/2025 at 08:06 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 04/27/2025 at 12:00 AM PDT
# Maximum Observed Stage: 1.96 Feet
# Maximum Observed Flow: 28 cfs
#
# Earliest Date & Time of Maximum Forecast: 04/30/2025 at 08:00 AM PDT
# Maximum Forecast Stage: 1.83 Feet
# Maximum Forecast Flow: 15 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
04/25/2025 08 AM PDT 1.91 23 Normal
04/25/2025 09 AM PDT 1.91 23 0 Normal
04/25/2025 10 AM PDT 1.91 23 0 Normal
04/25/2025 11 AM PDT 1.90 22 - Normal
04/25/2025 12 PM PDT 1.90 22 0 Normal
04/25/2025 01 PM PDT 1.90 22 0 Normal
04/25/2025 02 PM PDT 1.90 22 0 Normal
04/25/2025 03 PM PDT 1.90 22 0 Normal
04/25/2025 04 PM PDT 1.90 22 0 Normal
04/25/2025 05 PM PDT 1.89 21 - Normal
04/25/2025 06 PM PDT 1.89 21 0 Normal
04/25/2025 07 PM PDT 1.89 21 0 Normal
04/25/2025 08 PM PDT 1.89 21 0 Normal
04/25/2025 09 PM PDT 1.89 21 0 Normal
04/25/2025 10 PM PDT 1.89 21 0 Normal
04/25/2025 11 PM PDT 1.88 20 - Normal
04/26/2025 12 AM PDT 1.88 20 0 Normal
04/26/2025 01 AM PDT 1.88 20 0 Normal
04/26/2025 02 AM PDT 1.88 20 0 Normal
04/26/2025 03 AM PDT 1.88 20 0 Normal
04/26/2025 04 AM PDT 1.88 20 0 Normal
04/26/2025 05 AM PDT 1.88 20 0 Normal
04/26/2025 06 AM PDT 1.88 20 0 Normal
04/26/2025 07 AM PDT 1.89 21 + Normal
04/26/2025 08 AM PDT 1.88 20 - Normal
04/26/2025 09 AM PDT 1.88 20 0 Normal
04/26/2025 10 AM PDT 1.88 20 0 Normal
04/26/2025 11 AM PDT 1.88 20 0 Normal
04/26/2025 12 PM PDT 1.88 20 0 Normal
04/26/2025 01 PM PDT 1.89 21 + Normal
04/26/2025 02 PM PDT 1.89 21 0 Normal
04/26/2025 03 PM PDT 1.90 22 + Normal
04/26/2025 04 PM PDT 1.91 23 + Normal
04/26/2025 05 PM PDT 1.93 25 + Normal
04/26/2025 06 PM PDT 1.94 26 + Normal
04/26/2025 07 PM PDT 1.94 26 0 Normal
04/26/2025 08 PM PDT 1.93 25 - Normal
04/26/2025 09 PM PDT 1.93 25 0 Normal
04/26/2025 10 PM PDT 1.93 25 0 Normal
04/26/2025 11 PM PDT 1.94 26 + Normal
04/27/2025 12 AM PDT 1.96 28 + Normal
04/27/2025 01 AM PDT 1.95 27 - Normal
04/27/2025 02 AM PDT 1.94 26 - Normal
04/27/2025 03 AM PDT 1.93 25 - Normal
04/27/2025 04 AM PDT 1.93 25 0 Normal
04/27/2025 05 AM PDT 1.92 24 - Normal
04/27/2025 06 AM PDT 1.92 24 0 Normal
04/27/2025 07 AM PDT 1.92 24 0 Normal
04/27/2025 08 AM PDT 1.92 24 0 Normal
04/27/2025 09 AM PDT 1.91 23 - Normal
04/27/2025 10 AM PDT 1.91 23 0 Normal
04/27/2025 11 AM PDT 1.91 23 0 Normal
04/27/2025 12 PM PDT 1.91 23 0 Normal
04/27/2025 01 PM PDT 1.90 22 - Normal
04/27/2025 02 PM PDT 1.90 22 0 Normal
04/27/2025 03 PM PDT 1.90 22 0 Normal
04/27/2025 04 PM PDT 1.90 22 0 Normal
04/27/2025 05 PM PDT 1.89 21 - Normal
04/27/2025 06 PM PDT 1.89 21 0 Normal
04/27/2025 07 PM PDT 1.89 21 0 Normal
04/27/2025 08 PM PDT 1.88 20 - Normal
04/27/2025 09 PM PDT 1.88 20 0 Normal
04/27/2025 10 PM PDT 1.88 20 0 Normal
04/27/2025 11 PM PDT 1.88 20 0 Normal
04/28/2025 12 AM PDT 1.87 19 - Normal
04/28/2025 01 AM PDT 1.87 19 0 Normal
04/28/2025 02 AM PDT 1.87 19 0 Normal
04/28/2025 03 AM PDT 1.87 19 0 Normal
04/28/2025 04 AM PDT 1.86 18 - Normal
04/28/2025 05 AM PDT 1.86 18 0 Normal
04/28/2025 06 AM PDT 1.87 19 + Normal
04/28/2025 07 AM PDT 1.86 18 - Normal
04/28/2025 08 AM PDT 1.87 19 + Normal
04/28/2025 09 AM PDT 1.86 18 - Normal
04/28/2025 10 AM PDT 1.86 18 0 Normal
04/28/2025 11 AM PDT 1.86 18 0 Normal
04/28/2025 12 PM PDT 1.87 19 + Normal
04/28/2025 01 PM PDT 1.86 18 - Normal
04/28/2025 02 PM PDT 1.86 18 0 Normal
04/28/2025 03 PM PDT 1.86 18 0 Normal
04/28/2025 04 PM PDT 1.86 18 0 Normal
04/28/2025 05 PM PDT 1.86 18 0 Normal
04/28/2025 06 PM PDT 1.86 18 0 Normal
04/28/2025 07 PM PDT 1.85 17 - Normal
04/28/2025 08 PM PDT 1.85 17 0 Normal
04/28/2025 09 PM PDT 1.85 17 0 Normal
04/28/2025 10 PM PDT 1.85 17 0 Normal
04/28/2025 11 PM PDT 1.84 16 - Normal
04/29/2025 12 AM PDT 1.84 16 0 Normal
04/29/2025 01 AM PDT 1.84 16 0 Normal
04/29/2025 02 AM PDT 1.84 16 0 Normal
04/29/2025 03 AM PDT 1.84 16 0 Normal
04/29/2025 04 AM PDT 1.84 16 0 Normal
04/29/2025 05 AM PDT 1.84 16 0 Normal
04/29/2025 06 AM PDT 1.84 16 0 Normal
04/29/2025 07 AM PDT 1.85 17 + Normal
04/29/2025 08 AM PDT 1.84 16 - Normal
04/29/2025 09 AM PDT 1.85 17 + Normal
04/29/2025 10 AM PDT 1.85 17 0 Normal
04/29/2025 11 AM PDT 1.85 17 0 Normal
04/29/2025 12 PM PDT 1.85 17 0 Normal
04/29/2025 01 PM PDT 1.85 17 0 Normal
04/29/2025 02 PM PDT 1.85 17 0 Normal
04/29/2025 03 PM PDT 1.85 17 0 Normal
04/29/2025 04 PM PDT 1.85 17 0 Normal
04/29/2025 05 PM PDT 1.84 16 - Normal
04/29/2025 06 PM PDT 1.84 16 0 Normal
04/29/2025 07 PM PDT 1.84 16 0 Normal
04/29/2025 08 PM PDT 1.83 15 - Normal
04/29/2025 09 PM PDT 1.83 15 0 Normal
04/29/2025 10 PM PDT 1.83 15 0 Normal
04/29/2025 11 PM PDT 1.83 15 0 Normal
04/30/2025 12 AM PDT 1.82 14 - Normal
04/30/2025 01 AM PDT 1.82 14 0 Normal
04/30/2025 02 AM PDT 1.82 14 0 Normal
04/30/2025 03 AM PDT 1.82 14 0 Normal
04/30/2025 04 AM PDT 1.82 14 0 Normal
04/30/2025 05 AM PDT 1.82 14 0 Normal
04/30/2025 06 AM PDT 1.83 15 + Normal
04/30/2025 07 AM PDT 1.83 15 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
04/30/2025 08 AM PDT 1.83 15 Normal
04/30/2025 09 AM PDT 1.83 15 0 Normal
04/30/2025 10 AM PDT 1.83 15 0 Normal
04/30/2025 11 AM PDT 1.83 15 0 Normal
04/30/2025 12 PM PDT 1.83 15 0 Normal
04/30/2025 01 PM PDT 1.83 15 0 Normal
04/30/2025 02 PM PDT 1.83 15 0 Normal
04/30/2025 03 PM PDT 1.83 15 0 Normal
04/30/2025 04 PM PDT 1.83 15 0 Normal
04/30/2025 05 PM PDT 1.83 15 0 Normal
04/30/2025 06 PM PDT 1.83 15 0 Normal
04/30/2025 07 PM PDT 1.83 15 0 Normal
04/30/2025 08 PM PDT 1.83 15 0 Normal
04/30/2025 09 PM PDT 1.83 15 0 Normal
04/30/2025 10 PM PDT 1.83 15 0 Normal
04/30/2025 11 PM PDT 1.83 15 0 Normal
05/01/2025 12 AM PDT 1.83 15 0 Normal
05/01/2025 01 AM PDT 1.82 14 - Normal
05/01/2025 02 AM PDT 1.82 14 0 Normal
05/01/2025 03 AM PDT 1.82 14 0 Normal
05/01/2025 04 AM PDT 1.82 14 0 Normal
05/01/2025 05 AM PDT 1.82 14 0 Normal
05/01/2025 06 AM PDT 1.82 14 0 Normal
05/01/2025 07 AM PDT 1.82 14 0 Normal
05/01/2025 08 AM PDT 1.82 14 0 Normal
05/01/2025 09 AM PDT 1.82 14 0 Normal
05/01/2025 10 AM PDT 1.82 14 0 Normal
05/01/2025 11 AM PDT 1.82 14 0 Normal
05/01/2025 12 PM PDT 1.82 14 0 Normal
05/01/2025 01 PM PDT 1.82 14 0 Normal
05/01/2025 02 PM PDT 1.82 14 0 Normal
05/01/2025 03 PM PDT 1.82 14 0 Normal
05/01/2025 04 PM PDT 1.82 14 0 Normal
05/01/2025 05 PM PDT 1.82 14 0 Normal
05/01/2025 06 PM PDT 1.82 14 0 Normal
05/01/2025 07 PM PDT 1.82 14 0 Normal
05/01/2025 08 PM PDT 1.82 14 0 Normal
05/01/2025 09 PM PDT 1.82 14 0 Normal
05/01/2025 10 PM PDT 1.82 14 0 Normal
05/01/2025 11 PM PDT 1.82 14 0 Normal
05/02/2025 12 AM PDT 1.82 14 0 Normal
05/02/2025 01 AM PDT 1.82 14 0 Normal
05/02/2025 02 AM PDT 1.82 14 0 Normal
05/02/2025 03 AM PDT 1.82 14 0 Normal
05/02/2025 04 AM PDT 1.82 14 0 Normal
05/02/2025 05 AM PDT 1.82 14 0 Normal
05/02/2025 06 AM PDT 1.82 14 0 Normal
05/02/2025 07 AM PDT 1.82 14 0 Normal
05/02/2025 08 AM PDT 1.82 14 0 Normal
05/02/2025 09 AM PDT 1.82 14 0 Normal
05/02/2025 10 AM PDT 1.82 14 0 Normal
05/02/2025 11 AM PDT 1.82 14 0 Normal
05/02/2025 12 PM PDT 1.82 14 0 Normal
05/02/2025 01 PM PDT 1.82 14 0 Normal
05/02/2025 02 PM PDT 1.82 14 0 Normal
05/02/2025 03 PM PDT 1.82 14 0 Normal
05/02/2025 04 PM PDT 1.82 14 0 Normal
05/02/2025 05 PM PDT 1.82 14 0 Normal
05/02/2025 06 PM PDT 1.82 14 0 Normal
05/02/2025 07 PM PDT 1.81 14 - Normal
05/02/2025 08 PM PDT 1.81 14 0 Normal
05/02/2025 09 PM PDT 1.81 14 0 Normal
05/02/2025 10 PM PDT 1.81 14 0 Normal
05/02/2025 11 PM PDT 1.81 14 0 Normal
05/03/2025 12 AM PDT 1.81 14 0 Normal
05/03/2025 01 AM PDT 1.81 14 0 Normal
05/03/2025 02 AM PDT 1.81 14 0 Normal
05/03/2025 03 AM PDT 1.81 14 0 Normal
05/03/2025 04 AM PDT 1.81 14 0 Normal
05/03/2025 05 AM PDT 1.81 14 0 Normal
05/03/2025 06 AM PDT 1.81 14 0 Normal
05/03/2025 07 AM PDT 1.81 14 0 Normal
05/03/2025 08 AM PDT 1.81 14 0 Normal
05/03/2025 09 AM PDT 1.81 14 0 Normal
05/03/2025 10 AM PDT 1.81 14 0 Normal
05/03/2025 11 AM PDT 1.81 14 0 Normal
05/03/2025 12 PM PDT 1.81 14 0 Normal
05/03/2025 01 PM PDT 1.81 14 0 Normal
05/03/2025 02 PM PDT 1.81 14 0 Normal
05/03/2025 03 PM PDT 1.81 14 0 Normal
05/03/2025 04 PM PDT 1.81 14 0 Normal
05/03/2025 05 PM PDT 1.81 14 0 Normal
05/03/2025 06 PM PDT 1.81 14 0 Normal
05/03/2025 07 PM PDT 1.81 14 0 Normal
05/03/2025 08 PM PDT 1.81 14 0 Normal
05/03/2025 09 PM PDT 1.81 14 0 Normal
05/03/2025 10 PM PDT 1.81 14 0 Normal
05/03/2025 11 PM PDT 1.81 14 0 Normal
05/04/2025 12 AM PDT 1.81 14 0 Normal
05/04/2025 01 AM PDT 1.81 14 0 Normal
05/04/2025 02 AM PDT 1.81 14 0 Normal
05/04/2025 03 AM PDT 1.81 14 0 Normal
05/04/2025 04 AM PDT 1.81 14 0 Normal
05/04/2025 05 AM PDT 1.81 14 0 Normal
05/04/2025 06 AM PDT 1.81 14 0 Normal
05/04/2025 07 AM PDT 1.81 14 0 Normal
05/04/2025 08 AM PDT 1.81 14 0 Normal
05/04/2025 09 AM PDT 1.81 14 0 Normal
05/04/2025 10 AM PDT 1.81 14 0 Normal
05/04/2025 11 AM PDT 1.81 14 0 Normal
05/04/2025 12 PM PDT 1.81 14 0 Normal
05/04/2025 01 PM PDT 1.81 14 0 Normal
05/04/2025 02 PM PDT 1.81 14 0 Normal
05/04/2025 03 PM PDT 1.81 14 0 Normal
05/04/2025 04 PM PDT 1.81 14 0 Normal
05/04/2025 05 PM PDT 1.80 13 - Normal
05/04/2025 06 PM PDT 1.80 13 0 Normal
05/04/2025 07 PM PDT 1.80 13 0 Normal
05/04/2025 08 PM PDT 1.80 13 0 Normal
05/04/2025 09 PM PDT 1.80 13 0 Normal
05/04/2025 10 PM PDT 1.80 13 0 Normal
05/04/2025 11 PM PDT 1.80 13 0 Normal
05/05/2025 12 AM PDT 1.80 13 0 Normal
05/05/2025 01 AM PDT 1.80 13 0 Normal
05/05/2025 02 AM PDT 1.80 13 0 Normal
05/05/2025 03 AM PDT 1.80 13 0 Normal
05/05/2025 04 AM PDT 1.80 13 0 Normal
05/05/2025 05 AM PDT 1.80 13 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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