| Back to River Map | <<< Previous Forecast Point | | | Next Forecast Point >>> | Printer Version | Graph Version |  |
|
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: | Apr 22 2026 at 7:28 AM PDT | Next Issuance: | Apr 23 2026 at 9:00 AM PDT
| |
| 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: 04/22/2026 at 07:28 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 04/21/2026 at 02:00 AM PDT
# Maximum Observed Stage: 2.35 Feet
# Maximum Observed Flow: 90 cfs
#
# Earliest Date & Time of Maximum Forecast: 04/22/2026 at 02:00 PM PDT
# Maximum Forecast Stage: 3.55 Feet
# Maximum Forecast Flow: 362 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
04/17/2026 07 AM PDT 1.87 24 Normal
04/17/2026 08 AM PDT 1.86 23 - Normal
04/17/2026 09 AM PDT 1.87 24 + Normal
04/17/2026 10 AM PDT 1.87 24 0 Normal
04/17/2026 11 AM PDT 1.86 23 - Normal
04/17/2026 12 PM PDT 1.86 23 0 Normal
04/17/2026 01 PM PDT 1.86 23 0 Normal
04/17/2026 02 PM PDT 1.86 23 0 Normal
04/17/2026 03 PM PDT 1.86 23 0 Normal
04/17/2026 04 PM PDT 1.85 22 - Normal
04/17/2026 05 PM PDT 1.85 22 0 Normal
04/17/2026 06 PM PDT 1.85 22 0 Normal
04/17/2026 07 PM PDT 1.85 22 0 Normal
04/17/2026 08 PM PDT 1.84 21 - Normal
04/17/2026 09 PM PDT 1.84 21 0 Normal
04/17/2026 10 PM PDT 1.84 21 0 Normal
04/17/2026 11 PM PDT 1.84 21 0 Normal
04/18/2026 12 AM PDT 1.85 22 + Normal
04/18/2026 01 AM PDT 1.85 22 0 Normal
04/18/2026 02 AM PDT 1.85 22 0 Normal
04/18/2026 03 AM PDT 1.85 22 0 Normal
04/18/2026 04 AM PDT 1.85 22 0 Normal
04/18/2026 05 AM PDT 1.85 22 0 Normal
04/18/2026 06 AM PDT 1.84 21 - Normal
04/18/2026 07 AM PDT 1.84 21 0 Normal
04/18/2026 08 AM PDT 1.85 22 + Normal
04/18/2026 09 AM PDT 1.85 22 0 Normal
04/18/2026 10 AM PDT 1.85 22 0 Normal
04/18/2026 11 AM PDT 1.85 22 0 Normal
04/18/2026 12 PM PDT 1.85 22 0 Normal
04/18/2026 01 PM PDT 1.85 22 0 Normal
04/18/2026 02 PM PDT 1.85 22 0 Normal
04/18/2026 03 PM PDT 1.85 22 0 Normal
04/18/2026 04 PM PDT 1.85 22 0 Normal
04/18/2026 05 PM PDT 1.85 22 0 Normal
04/18/2026 06 PM PDT 1.85 22 0 Normal
04/18/2026 07 PM PDT 1.85 22 0 Normal
04/18/2026 08 PM PDT 1.84 21 - Normal
04/18/2026 09 PM PDT 1.84 21 0 Normal
04/18/2026 10 PM PDT 1.84 21 0 Normal
04/18/2026 11 PM PDT 1.84 21 0 Normal
04/19/2026 12 AM PDT 1.84 21 0 Normal
04/19/2026 01 AM PDT 1.84 21 0 Normal
04/19/2026 02 AM PDT 1.84 21 0 Normal
04/19/2026 03 AM PDT 1.84 21 0 Normal
04/19/2026 04 AM PDT 1.84 21 0 Normal
04/19/2026 05 AM PDT 1.84 21 0 Normal
04/19/2026 06 AM PDT 1.84 21 0 Normal
04/19/2026 07 AM PDT 1.83 20 - Normal
04/19/2026 08 AM PDT 1.84 21 + Normal
04/19/2026 09 AM PDT 1.83 20 - Normal
04/19/2026 10 AM PDT 1.84 21 + Normal
04/19/2026 11 AM PDT 1.84 21 0 Normal
04/19/2026 12 PM PDT 1.84 21 0 Normal
04/19/2026 01 PM PDT 1.83 20 - Normal
04/19/2026 02 PM PDT 1.84 21 + Normal
04/19/2026 03 PM PDT 1.84 21 0 Normal
04/19/2026 04 PM PDT 1.83 20 - Normal
04/19/2026 05 PM PDT 1.83 20 0 Normal
04/19/2026 06 PM PDT 1.83 20 0 Normal
04/19/2026 07 PM PDT 1.83 20 0 Normal
04/19/2026 08 PM PDT 1.82 19 - Normal
04/19/2026 09 PM PDT 1.82 19 0 Normal
04/19/2026 10 PM PDT 1.82 19 0 Normal
04/19/2026 11 PM PDT 1.82 19 0 Normal
04/20/2026 12 AM PDT 1.82 19 0 Normal
04/20/2026 01 AM PDT 1.82 19 0 Normal
04/20/2026 02 AM PDT 1.82 19 0 Normal
04/20/2026 03 AM PDT 1.82 19 0 Normal
04/20/2026 04 AM PDT 1.82 19 0 Normal
04/20/2026 05 AM PDT 1.82 19 0 Normal
04/20/2026 06 AM PDT 1.81 18 - Normal
04/20/2026 07 AM PDT 1.82 19 + Normal
04/20/2026 08 AM PDT 1.82 19 0 Normal
04/20/2026 09 AM PDT 1.82 19 0 Normal
04/20/2026 10 AM PDT 1.82 19 0 Normal
04/20/2026 11 AM PDT 1.82 19 0 Normal
04/20/2026 12 PM PDT 1.82 19 0 Normal
04/20/2026 01 PM PDT 1.82 19 0 Normal
04/20/2026 02 PM PDT 1.83 20 + Normal
04/20/2026 03 PM PDT 1.83 20 0 Normal
04/20/2026 04 PM PDT 1.87 24 + Normal
04/20/2026 05 PM PDT 1.92 29 + Normal
04/20/2026 06 PM PDT 2.03 43 + Normal
04/20/2026 07 PM PDT 2.00 39 - Normal
04/20/2026 08 PM PDT 2.03 43 + Normal
04/20/2026 09 PM PDT 2.03 43 0 Normal
04/20/2026 10 PM PDT 2.09 51 + Normal
04/20/2026 11 PM PDT 2.17 62 + Normal
04/21/2026 12 AM PDT 2.22 70 + Normal
04/21/2026 01 AM PDT 2.26 76 + Normal
04/21/2026 02 AM PDT 2.35 90 + Normal
04/21/2026 03 AM PDT 2.29 80 - Normal
04/21/2026 04 AM PDT 2.30 82 + Normal
04/21/2026 05 AM PDT 2.32 85 + Normal
04/21/2026 06 AM PDT 2.32 85 0 Normal
04/21/2026 07 AM PDT 2.31 83 - Normal
04/21/2026 08 AM PDT 2.30 82 - Normal
04/21/2026 09 AM PDT 2.29 80 - Normal
04/21/2026 10 AM PDT 2.27 77 - Normal
04/21/2026 11 AM PDT 2.26 76 - Normal
04/21/2026 12 PM PDT 2.26 76 0 Normal
04/21/2026 01 PM PDT 2.26 76 0 Normal
04/21/2026 02 PM PDT 2.26 76 0 Normal
04/21/2026 03 PM PDT 2.25 74 - Normal
04/21/2026 04 PM PDT 2.25 74 0 Normal
04/21/2026 05 PM PDT 2.26 76 + Normal
04/21/2026 06 PM PDT 2.24 73 - Normal
04/21/2026 07 PM PDT 2.23 71 - Normal
04/21/2026 08 PM PDT 2.22 70 - Normal
04/21/2026 09 PM PDT 2.21 68 - Normal
04/21/2026 10 PM PDT 2.21 68 0 Normal
04/21/2026 11 PM PDT 2.20 67 - Normal
04/22/2026 12 AM PDT 2.18 64 - Normal
04/22/2026 01 AM PDT 2.17 62 - Normal
04/22/2026 02 AM PDT 2.16 61 - Normal
04/22/2026 03 AM PDT 2.17 62 + Normal
04/22/2026 04 AM PDT 2.20 67 + Normal
04/22/2026 05 AM PDT 2.20 67 0 Normal
04/22/2026 06 AM PDT 2.20 67 0 Normal
04/22/2026 07 AM PDT 2.18 64 - Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
04/22/2026 08 AM PDT 2.30 82 Normal
04/22/2026 09 AM PDT 2.61 136 + Normal
04/22/2026 10 AM PDT 2.91 199 + Normal
04/22/2026 11 AM PDT 3.13 251 + Normal
04/22/2026 12 PM PDT 3.38 315 + Normal
04/22/2026 01 PM PDT 3.51 351 + Normal
04/22/2026 02 PM PDT 3.55 362 + Normal
04/22/2026 03 PM PDT 3.52 354 - Normal
04/22/2026 04 PM PDT 3.46 337 - Normal
04/22/2026 05 PM PDT 3.38 315 - Normal
04/22/2026 06 PM PDT 3.31 296 - Normal
04/22/2026 07 PM PDT 3.28 289 - Normal
04/22/2026 08 PM PDT 3.31 296 + Normal
04/22/2026 09 PM PDT 3.36 310 + Normal
04/22/2026 10 PM PDT 3.34 304 - Normal
04/22/2026 11 PM PDT 3.27 286 - Normal
04/23/2026 12 AM PDT 3.21 271 - Normal
04/23/2026 01 AM PDT 3.14 253 - Normal
04/23/2026 02 AM PDT 3.07 236 - Normal
04/23/2026 03 AM PDT 2.99 217 - Normal
04/23/2026 04 AM PDT 2.92 201 - Normal
04/23/2026 05 AM PDT 2.85 186 - Normal
04/23/2026 06 AM PDT 2.78 171 - Normal
04/23/2026 07 AM PDT 2.71 156 - Normal
04/23/2026 08 AM PDT 2.65 144 - Normal
04/23/2026 09 AM PDT 2.59 132 - Normal
04/23/2026 10 AM PDT 2.53 121 - Normal
04/23/2026 11 AM PDT 2.47 110 - Normal
04/23/2026 12 PM PDT 2.42 102 - Normal
04/23/2026 01 PM PDT 2.37 93 - Normal
04/23/2026 02 PM PDT 2.32 85 - Normal
04/23/2026 03 PM PDT 2.28 79 - Normal
04/23/2026 04 PM PDT 2.24 73 - Normal
04/23/2026 05 PM PDT 2.20 67 - Normal
04/23/2026 06 PM PDT 2.17 62 - Normal
04/23/2026 07 PM PDT 2.14 58 - Normal
04/23/2026 08 PM PDT 2.11 54 - Normal
04/23/2026 09 PM PDT 2.09 51 - Normal
04/23/2026 10 PM PDT 2.07 48 - Normal
04/23/2026 11 PM PDT 2.05 46 - Normal
04/24/2026 12 AM PDT 2.04 44 - Normal
04/24/2026 01 AM PDT 2.02 41 - Normal
04/24/2026 02 AM PDT 2.01 40 - Normal
04/24/2026 03 AM PDT 2.00 39 - Normal
04/24/2026 04 AM PDT 1.99 37 - Normal
04/24/2026 05 AM PDT 1.98 36 - Normal
04/24/2026 06 AM PDT 1.97 35 - Normal
04/24/2026 07 AM PDT 1.96 34 - Normal
04/24/2026 08 AM PDT 1.95 33 - Normal
04/24/2026 09 AM PDT 1.95 33 0 Normal
04/24/2026 10 AM PDT 1.94 32 - Normal
04/24/2026 11 AM PDT 1.94 32 0 Normal
04/24/2026 12 PM PDT 1.93 31 - Normal
04/24/2026 01 PM PDT 1.93 31 0 Normal
04/24/2026 02 PM PDT 1.92 29 - Normal
04/24/2026 03 PM PDT 1.92 29 0 Normal
04/24/2026 04 PM PDT 1.92 29 0 Normal
04/24/2026 05 PM PDT 1.92 29 0 Normal
04/24/2026 06 PM PDT 1.91 28 - Normal
04/24/2026 07 PM PDT 1.91 28 0 Normal
04/24/2026 08 PM PDT 1.91 28 0 Normal
04/24/2026 09 PM PDT 1.91 28 0 Normal
04/24/2026 10 PM PDT 1.90 27 - Normal
04/24/2026 11 PM PDT 1.90 27 0 Normal
04/25/2026 12 AM PDT 1.90 27 0 Normal
04/25/2026 01 AM PDT 1.90 27 0 Normal
04/25/2026 02 AM PDT 1.90 27 0 Normal
04/25/2026 03 AM PDT 1.90 27 0 Normal
04/25/2026 04 AM PDT 1.90 27 0 Normal
04/25/2026 05 AM PDT 1.89 26 - Normal
04/25/2026 06 AM PDT 1.89 26 0 Normal
04/25/2026 07 AM PDT 1.89 26 0 Normal
04/25/2026 08 AM PDT 1.89 26 0 Normal
04/25/2026 09 AM PDT 1.89 26 0 Normal
04/25/2026 10 AM PDT 1.89 26 0 Normal
04/25/2026 11 AM PDT 1.89 26 0 Normal
04/25/2026 12 PM PDT 1.89 26 0 Normal
04/25/2026 01 PM PDT 1.89 26 0 Normal
04/25/2026 02 PM PDT 1.89 26 0 Normal
04/25/2026 03 PM PDT 1.89 26 0 Normal
04/25/2026 04 PM PDT 1.89 26 0 Normal
04/25/2026 05 PM PDT 1.89 26 0 Normal
04/25/2026 06 PM PDT 1.88 25 - Normal
04/25/2026 07 PM PDT 1.88 25 0 Normal
04/25/2026 08 PM PDT 1.88 25 0 Normal
04/25/2026 09 PM PDT 1.88 25 0 Normal
04/25/2026 10 PM PDT 1.88 25 0 Normal
04/25/2026 11 PM PDT 1.88 25 0 Normal
04/26/2026 12 AM PDT 1.88 25 0 Normal
04/26/2026 01 AM PDT 1.88 25 0 Normal
04/26/2026 02 AM PDT 1.88 25 0 Normal
04/26/2026 03 AM PDT 1.88 25 0 Normal
04/26/2026 04 AM PDT 1.88 25 0 Normal
04/26/2026 05 AM PDT 1.88 25 0 Normal
04/26/2026 06 AM PDT 1.88 25 0 Normal
04/26/2026 07 AM PDT 1.88 25 0 Normal
04/26/2026 08 AM PDT 1.88 25 0 Normal
04/26/2026 09 AM PDT 1.88 25 0 Normal
04/26/2026 10 AM PDT 1.88 25 0 Normal
04/26/2026 11 AM PDT 1.88 25 0 Normal
04/26/2026 12 PM PDT 1.88 25 0 Normal
04/26/2026 01 PM PDT 1.88 25 0 Normal
04/26/2026 02 PM PDT 1.88 25 0 Normal
04/26/2026 03 PM PDT 1.87 24 - Normal
04/26/2026 04 PM PDT 1.87 24 0 Normal
04/26/2026 05 PM PDT 1.87 24 0 Normal
04/26/2026 06 PM PDT 1.87 24 0 Normal
04/26/2026 07 PM PDT 1.87 24 0 Normal
04/26/2026 08 PM PDT 1.87 24 0 Normal
04/26/2026 09 PM PDT 1.87 24 0 Normal
04/26/2026 10 PM PDT 1.87 24 0 Normal
04/26/2026 11 PM PDT 1.87 24 0 Normal
04/27/2026 12 AM PDT 1.87 24 0 Normal
04/27/2026 01 AM PDT 1.87 24 0 Normal
04/27/2026 02 AM PDT 1.87 24 0 Normal
04/27/2026 03 AM PDT 1.87 24 0 Normal
04/27/2026 04 AM PDT 1.87 24 0 Normal
04/27/2026 05 AM PDT 1.87 24 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.
|
Follow us on X
Follow us on Facebook
Follow us on YouTube
NWS RSS Feed