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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: | Jan 21 2026 at 7:12 AM PST | Next Issuance: | Jan 21 2026 at 3:00 PM PST
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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: 01/21/2026 at 07:12 AM PST
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 01/16/2026 at 09:00 AM PST
# Maximum Observed Stage: 2.32 Feet
# Maximum Observed Flow: 145 cfs
#
# Earliest Date & Time of Maximum Forecast: 01/21/2026 at 08:00 AM PST
# Maximum Forecast Stage: 2.13 Feet
# Maximum Forecast Flow: 116 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
01/16/2026 07 AM PST 2.32 145 Normal
01/16/2026 08 AM PST 2.32 145 0 Normal
01/16/2026 09 AM PST 2.32 145 0 Normal
01/16/2026 10 AM PST 2.31 143 - Normal
01/16/2026 11 AM PST 2.31 143 0 Normal
01/16/2026 12 PM PST 2.31 143 0 Normal
01/16/2026 01 PM PST 2.31 143 0 Normal
01/16/2026 02 PM PST 2.30 142 - Normal
01/16/2026 03 PM PST 2.31 143 + Normal
01/16/2026 04 PM PST 2.30 142 - Normal
01/16/2026 05 PM PST 2.30 142 0 Normal
01/16/2026 06 PM PST 2.30 142 0 Normal
01/16/2026 07 PM PST 2.29 140 - Normal
01/16/2026 08 PM PST 2.28 139 - Normal
01/16/2026 09 PM PST 2.28 139 0 Normal
01/16/2026 10 PM PST 2.27 137 - Normal
01/16/2026 11 PM PST 2.28 139 + Normal
01/17/2026 12 AM PST 2.27 137 - Normal
01/17/2026 01 AM PST 2.27 137 0 Normal
01/17/2026 02 AM PST 2.26 136 - Normal
01/17/2026 03 AM PST 2.26 136 0 Normal
01/17/2026 04 AM PST 2.26 136 0 Normal
01/17/2026 05 AM PST 2.26 136 0 Normal
01/17/2026 06 AM PST 2.26 136 0 Normal
01/17/2026 07 AM PST 2.26 136 0 Normal
01/17/2026 08 AM PST 2.25 134 - Normal
01/17/2026 09 AM PST 2.25 134 0 Normal
01/17/2026 10 AM PST 2.25 134 0 Normal
01/17/2026 11 AM PST 2.25 134 0 Normal
01/17/2026 12 PM PST 2.25 134 0 Normal
01/17/2026 01 PM PST 2.25 134 0 Normal
01/17/2026 02 PM PST 2.25 134 0 Normal
01/17/2026 03 PM PST 2.24 133 - Normal
01/17/2026 04 PM PST 2.24 133 0 Normal
01/17/2026 05 PM PST 2.25 134 + Normal
01/17/2026 06 PM PST 2.24 133 - Normal
01/17/2026 07 PM PST 2.24 133 0 Normal
01/17/2026 08 PM PST 2.24 133 0 Normal
01/17/2026 09 PM PST 2.23 131 - Normal
01/17/2026 10 PM PST 2.23 131 0 Normal
01/17/2026 11 PM PST 2.23 131 0 Normal
01/18/2026 12 AM PST 2.22 130 - Normal
01/18/2026 01 AM PST 2.22 130 0 Normal
01/18/2026 02 AM PST 2.22 130 0 Normal
01/18/2026 03 AM PST 2.22 130 0 Normal
01/18/2026 04 AM PST 2.22 130 0 Normal
01/18/2026 05 AM PST 2.22 130 0 Normal
01/18/2026 06 AM PST 2.22 130 0 Normal
01/18/2026 07 AM PST 2.21 128 - Normal
01/18/2026 08 AM PST 2.21 128 0 Normal
01/18/2026 09 AM PST 2.22 130 + Normal
01/18/2026 10 AM PST 2.21 128 - Normal
01/18/2026 11 AM PST 2.21 128 0 Normal
01/18/2026 12 PM PST 2.21 128 0 Normal
01/18/2026 01 PM PST 2.21 128 0 Normal
01/18/2026 02 PM PST 2.21 128 0 Normal
01/18/2026 03 PM PST 2.21 128 0 Normal
01/18/2026 04 PM PST 2.21 128 0 Normal
01/18/2026 05 PM PST 2.21 128 0 Normal
01/18/2026 06 PM PST 2.21 128 0 Normal
01/18/2026 07 PM PST 2.20 127 - Normal
01/18/2026 08 PM PST 2.20 127 0 Normal
01/18/2026 09 PM PST 2.20 127 0 Normal
01/18/2026 10 PM PST 2.20 127 0 Normal
01/18/2026 11 PM PST 2.19 125 - Normal
01/19/2026 12 AM PST 2.19 125 0 Normal
01/19/2026 01 AM PST 2.19 125 0 Normal
01/19/2026 02 AM PST 2.19 125 0 Normal
01/19/2026 03 AM PST 2.19 125 0 Normal
01/19/2026 04 AM PST 2.19 125 0 Normal
01/19/2026 05 AM PST 2.18 124 - Normal
01/19/2026 06 AM PST 2.18 124 0 Normal
01/19/2026 07 AM PST 2.18 124 0 Normal
01/19/2026 08 AM PST 2.18 124 0 Normal
01/19/2026 09 AM PST 2.18 124 0 Normal
01/19/2026 10 AM PST 2.18 124 0 Normal
01/19/2026 11 AM PST 2.18 124 0 Normal
01/19/2026 12 PM PST 2.18 124 0 Normal
01/19/2026 01 PM PST 2.18 124 0 Normal
01/19/2026 02 PM PST 2.18 124 0 Normal
01/19/2026 03 PM PST 2.17 122 - Normal
01/19/2026 04 PM PST 2.17 122 0 Normal
01/19/2026 05 PM PST 2.17 122 0 Normal
01/19/2026 06 PM PST 2.17 122 0 Normal
01/19/2026 07 PM PST 2.17 122 0 Normal
01/19/2026 08 PM PST 2.17 122 0 Normal
01/19/2026 09 PM PST 2.17 122 0 Normal
01/19/2026 10 PM PST 2.17 122 0 Normal
01/19/2026 11 PM PST 2.17 122 0 Normal
01/20/2026 12 AM PST 2.17 122 0 Normal
01/20/2026 01 AM PST 2.16 121 - Normal
01/20/2026 02 AM PST 2.16 121 0 Normal
01/20/2026 03 AM PST 2.17 122 + Normal
01/20/2026 04 AM PST 2.16 121 - Normal
01/20/2026 05 AM PST 2.16 121 0 Normal
01/20/2026 06 AM PST 2.16 121 0 Normal
01/20/2026 07 AM PST 2.16 121 0 Normal
01/20/2026 08 AM PST 2.16 121 0 Normal
01/20/2026 09 AM PST 2.16 121 0 Normal
01/20/2026 10 AM PST 2.15 119 - Normal
01/20/2026 11 AM PST 2.15 119 0 Normal
01/20/2026 12 PM PST 2.15 119 0 Normal
01/20/2026 01 PM PST 2.16 121 + Normal
01/20/2026 02 PM PST 2.15 119 - Normal
01/20/2026 03 PM PST 2.15 119 0 Normal
01/20/2026 04 PM PST 2.15 119 0 Normal
01/20/2026 05 PM PST 2.15 119 0 Normal
01/20/2026 06 PM PST 2.15 119 0 Normal
01/20/2026 07 PM PST 2.15 119 0 Normal
01/20/2026 08 PM PST 2.15 119 0 Normal
01/20/2026 09 PM PST 2.14 118 - Normal
01/20/2026 10 PM PST 2.14 118 0 Normal
01/20/2026 11 PM PST 2.14 118 0 Normal
01/21/2026 12 AM PST 2.13 116 - Normal
01/21/2026 01 AM PST 2.13 116 0 Normal
01/21/2026 02 AM PST 2.13 116 0 Normal
01/21/2026 03 AM PST 2.13 116 0 Normal
01/21/2026 04 AM PST 2.13 116 0 Normal
01/21/2026 05 AM PST 2.13 116 0 Normal
01/21/2026 06 AM PST 2.13 116 0 Normal
01/21/2026 07 AM PST 2.13 116 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
01/21/2026 08 AM PST 2.13 116 Normal
01/21/2026 09 AM PST 2.12 115 - Normal
01/21/2026 10 AM PST 2.12 115 0 Normal
01/21/2026 11 AM PST 2.12 115 0 Normal
01/21/2026 12 PM PST 2.12 115 0 Normal
01/21/2026 01 PM PST 2.12 115 0 Normal
01/21/2026 02 PM PST 2.12 115 0 Normal
01/21/2026 03 PM PST 2.12 115 0 Normal
01/21/2026 04 PM PST 2.11 113 - Normal
01/21/2026 05 PM PST 2.11 113 0 Normal
01/21/2026 06 PM PST 2.11 113 0 Normal
01/21/2026 07 PM PST 2.11 113 0 Normal
01/21/2026 08 PM PST 2.11 113 0 Normal
01/21/2026 09 PM PST 2.10 112 - Normal
01/21/2026 10 PM PST 2.10 112 0 Normal
01/21/2026 11 PM PST 2.10 112 0 Normal
01/22/2026 12 AM PST 2.10 112 0 Normal
01/22/2026 01 AM PST 2.10 112 0 Normal
01/22/2026 02 AM PST 2.10 112 0 Normal
01/22/2026 03 AM PST 2.10 112 0 Normal
01/22/2026 04 AM PST 2.09 110 - Normal
01/22/2026 05 AM PST 2.09 110 0 Normal
01/22/2026 06 AM PST 2.09 110 0 Normal
01/22/2026 07 AM PST 2.09 110 0 Normal
01/22/2026 08 AM PST 2.09 110 0 Normal
01/22/2026 09 AM PST 2.09 110 0 Normal
01/22/2026 10 AM PST 2.08 109 - Normal
01/22/2026 11 AM PST 2.08 109 0 Normal
01/22/2026 12 PM PST 2.08 109 0 Normal
01/22/2026 01 PM PST 2.08 109 0 Normal
01/22/2026 02 PM PST 2.08 109 0 Normal
01/22/2026 03 PM PST 2.08 109 0 Normal
01/22/2026 04 PM PST 2.08 109 0 Normal
01/22/2026 05 PM PST 2.07 108 - Normal
01/22/2026 06 PM PST 2.07 108 0 Normal
01/22/2026 07 PM PST 2.07 108 0 Normal
01/22/2026 08 PM PST 2.07 108 0 Normal
01/22/2026 09 PM PST 2.07 108 0 Normal
01/22/2026 10 PM PST 2.07 108 0 Normal
01/22/2026 11 PM PST 2.06 106 - Normal
01/23/2026 12 AM PST 2.06 106 0 Normal
01/23/2026 01 AM PST 2.06 106 0 Normal
01/23/2026 02 AM PST 2.06 106 0 Normal
01/23/2026 03 AM PST 2.06 106 0 Normal
01/23/2026 04 AM PST 2.06 106 0 Normal
01/23/2026 05 AM PST 2.06 106 0 Normal
01/23/2026 06 AM PST 2.05 105 - Normal
01/23/2026 07 AM PST 2.05 105 0 Normal
01/23/2026 08 AM PST 2.05 105 0 Normal
01/23/2026 09 AM PST 2.05 105 0 Normal
01/23/2026 10 AM PST 2.05 105 0 Normal
01/23/2026 11 AM PST 2.05 105 0 Normal
01/23/2026 12 PM PST 2.05 105 0 Normal
01/23/2026 01 PM PST 2.04 103 - Normal
01/23/2026 02 PM PST 2.04 103 0 Normal
01/23/2026 03 PM PST 2.04 103 0 Normal
01/23/2026 04 PM PST 2.04 103 0 Normal
01/23/2026 05 PM PST 2.04 103 0 Normal
01/23/2026 06 PM PST 2.04 103 0 Normal
01/23/2026 07 PM PST 2.04 103 0 Normal
01/23/2026 08 PM PST 2.03 102 - Normal
01/23/2026 09 PM PST 2.03 102 0 Normal
01/23/2026 10 PM PST 2.03 102 0 Normal
01/23/2026 11 PM PST 2.03 102 0 Normal
01/24/2026 12 AM PST 2.03 102 0 Normal
01/24/2026 01 AM PST 2.03 102 0 Normal
01/24/2026 02 AM PST 2.03 102 0 Normal
01/24/2026 03 AM PST 2.02 101 - Normal
01/24/2026 04 AM PST 2.02 101 0 Normal
01/24/2026 05 AM PST 2.02 101 0 Normal
01/24/2026 06 AM PST 2.02 101 0 Normal
01/24/2026 07 AM PST 2.02 101 0 Normal
01/24/2026 08 AM PST 2.02 101 0 Normal
01/24/2026 09 AM PST 2.02 101 0 Normal
01/24/2026 10 AM PST 2.02 101 0 Normal
01/24/2026 11 AM PST 2.01 99 - Normal
01/24/2026 12 PM PST 2.01 99 0 Normal
01/24/2026 01 PM PST 2.01 99 0 Normal
01/24/2026 02 PM PST 2.01 99 0 Normal
01/24/2026 03 PM PST 2.01 99 0 Normal
01/24/2026 04 PM PST 2.01 99 0 Normal
01/24/2026 05 PM PST 2.01 99 0 Normal
01/24/2026 06 PM PST 2.00 98 - Normal
01/24/2026 07 PM PST 2.00 98 0 Normal
01/24/2026 08 PM PST 2.00 98 0 Normal
01/24/2026 09 PM PST 2.00 98 0 Normal
01/24/2026 10 PM PST 2.00 98 0 Normal
01/24/2026 11 PM PST 2.00 98 0 Normal
01/25/2026 12 AM PST 2.00 98 0 Normal
01/25/2026 01 AM PST 2.00 98 0 Normal
01/25/2026 02 AM PST 1.99 97 - Normal
01/25/2026 03 AM PST 1.99 97 0 Normal
01/25/2026 04 AM PST 1.99 97 0 Normal
01/25/2026 05 AM PST 1.99 97 0 Normal
01/25/2026 06 AM PST 1.99 97 0 Normal
01/25/2026 07 AM PST 1.99 97 0 Normal
01/25/2026 08 AM PST 1.99 97 0 Normal
01/25/2026 09 AM PST 1.99 97 0 Normal
01/25/2026 10 AM PST 1.98 95 - Normal
01/25/2026 11 AM PST 1.98 95 0 Normal
01/25/2026 12 PM PST 1.98 95 0 Normal
01/25/2026 01 PM PST 1.98 95 0 Normal
01/25/2026 02 PM PST 1.98 95 0 Normal
01/25/2026 03 PM PST 1.98 95 0 Normal
01/25/2026 04 PM PST 1.98 95 0 Normal
01/25/2026 05 PM PST 1.98 95 0 Normal
01/25/2026 06 PM PST 1.97 94 - Normal
01/25/2026 07 PM PST 1.97 94 0 Normal
01/25/2026 08 PM PST 1.97 94 0 Normal
01/25/2026 09 PM PST 1.97 94 0 Normal
01/25/2026 10 PM PST 1.97 94 0 Normal
01/25/2026 11 PM PST 1.97 94 0 Normal
01/26/2026 12 AM PST 1.97 94 0 Normal
01/26/2026 01 AM PST 1.97 94 0 Normal
01/26/2026 02 AM PST 1.96 93 - Normal
01/26/2026 03 AM PST 1.96 93 0 Normal
01/26/2026 04 AM PST 1.96 93 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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