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MATTOLE RIVER - ETTERSBURG (ETTC1)
| Latitude: 40.14º N | Longitude: 123.99º W | Elevation: 579 Feet | | Forecast Type: Unofficial Location |
| Location: Humboldt County in California | Bulletin Group: North Coast | River Group: North Coast |
| Issuance Time: | Mar 14 2026 at 9:10 AM PDT | Next Issuance: | Mar 15 2026 at 9:00 AM PDT
| |
| Action/Monitor: N/A | Minor Flood: N/A | Moderate Flood: N/A | Major Flood: N/A |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: Mattole River - Ettersburg (ETTC1)
#
# File Generation Time: 03/14/2026 at 09:12 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 03/09/2026 at 09:00 AM PDT
# Maximum Observed Stage: 9.97 Feet
# Maximum Observed Flow: 189 cfs
#
# Earliest Date & Time of Maximum Forecast: 03/14/2026 at 10:00 AM PDT
# Maximum Forecast Stage: 9.62 Feet
# Maximum Forecast Flow: 131 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
03/09/2026 09 AM PDT 9.97 189 Not Applicable
03/09/2026 10 AM PDT 9.95 185 - Not Applicable
03/09/2026 11 AM PDT 9.96 187 + Not Applicable
03/09/2026 12 PM PDT 9.96 187 0 Not Applicable
03/09/2026 01 PM PDT 9.96 187 0 Not Applicable
03/09/2026 02 PM PDT 9.95 185 - Not Applicable
03/09/2026 03 PM PDT 9.94 184 - Not Applicable
03/09/2026 04 PM PDT 9.94 184 0 Not Applicable
03/09/2026 05 PM PDT 9.93 182 - Not Applicable
03/09/2026 06 PM PDT 9.93 182 0 Not Applicable
03/09/2026 07 PM PDT 9.93 182 0 Not Applicable
03/09/2026 08 PM PDT 9.92 180 - Not Applicable
03/09/2026 09 PM PDT 9.91 178 - Not Applicable
03/09/2026 10 PM PDT 9.91 178 0 Not Applicable
03/09/2026 11 PM PDT 9.92 180 + Not Applicable
03/10/2026 12 AM PDT 9.91 178 - Not Applicable
03/10/2026 01 AM PDT 9.90 177 - Not Applicable
03/10/2026 02 AM PDT 9.91 178 + Not Applicable
03/10/2026 03 AM PDT 9.90 177 - Not Applicable
03/10/2026 04 AM PDT 9.89 175 - Not Applicable
03/10/2026 05 AM PDT 9.89 175 0 Not Applicable
03/10/2026 06 AM PDT 9.89 175 0 Not Applicable
03/10/2026 07 AM PDT 9.88 173 - Not Applicable
03/10/2026 08 AM PDT 9.88 173 0 Not Applicable
03/10/2026 09 AM PDT 9.87 171 - Not Applicable
03/10/2026 10 AM PDT 9.87 171 0 Not Applicable
03/10/2026 11 AM PDT 9.87 171 0 Not Applicable
03/10/2026 12 PM PDT 9.86 170 - Not Applicable
03/10/2026 01 PM PDT 9.86 170 0 Not Applicable
03/10/2026 02 PM PDT 9.87 171 + Not Applicable
03/10/2026 03 PM PDT 9.86 170 - Not Applicable
03/10/2026 04 PM PDT 9.85 168 - Not Applicable
03/10/2026 05 PM PDT 9.85 168 0 Not Applicable
03/10/2026 06 PM PDT 9.84 166 - Not Applicable
03/10/2026 07 PM PDT 9.84 166 0 Not Applicable
03/10/2026 08 PM PDT 9.83 165 - Not Applicable
03/10/2026 09 PM PDT 9.82 163 - Not Applicable
03/10/2026 10 PM PDT 9.82 163 0 Not Applicable
03/10/2026 11 PM PDT 9.82 163 0 Not Applicable
03/11/2026 12 AM PDT 9.82 163 0 Not Applicable
03/11/2026 01 AM PDT 9.82 163 0 Not Applicable
03/11/2026 02 AM PDT 9.81 161 - Not Applicable
03/11/2026 03 AM PDT 9.81 161 0 Not Applicable
03/11/2026 04 AM PDT 9.81 161 0 Not Applicable
03/11/2026 05 AM PDT 9.79 158 - Not Applicable
03/11/2026 06 AM PDT 9.80 160 + Not Applicable
03/11/2026 07 AM PDT 9.79 158 - Not Applicable
03/11/2026 08 AM PDT 9.79 158 0 Not Applicable
03/11/2026 09 AM PDT 9.79 158 0 Not Applicable
03/11/2026 10 AM PDT 9.79 158 0 Not Applicable
03/11/2026 11 AM PDT 9.79 158 0 Not Applicable
03/11/2026 12 PM PDT 9.78 156 - Not Applicable
03/11/2026 01 PM PDT 9.79 158 + Not Applicable
03/11/2026 02 PM PDT 9.78 156 - Not Applicable
03/11/2026 03 PM PDT 9.78 156 0 Not Applicable
03/11/2026 04 PM PDT 9.77 155 - Not Applicable
03/11/2026 05 PM PDT 9.78 156 + Not Applicable
03/11/2026 06 PM PDT 9.78 156 0 Not Applicable
03/11/2026 07 PM PDT 9.78 156 0 Not Applicable
03/11/2026 08 PM PDT 9.76 153 - Not Applicable
03/11/2026 09 PM PDT 9.75 151 - Not Applicable
03/11/2026 10 PM PDT 9.75 151 0 Not Applicable
03/11/2026 11 PM PDT 9.75 151 0 Not Applicable
03/12/2026 12 AM PDT 9.74 150 - Not Applicable
03/12/2026 01 AM PDT 9.74 150 0 Not Applicable
03/12/2026 02 AM PDT 9.74 150 0 Not Applicable
03/12/2026 03 AM PDT 9.73 148 - Not Applicable
03/12/2026 04 AM PDT 9.73 148 0 Not Applicable
03/12/2026 05 AM PDT 9.74 150 + Not Applicable
03/12/2026 06 AM PDT 9.73 148 - Not Applicable
03/12/2026 07 AM PDT 9.73 148 0 Not Applicable
03/12/2026 08 AM PDT 9.73 148 0 Not Applicable
03/12/2026 09 AM PDT 9.73 148 0 Not Applicable
03/12/2026 10 AM PDT 9.72 147 - Not Applicable
03/12/2026 11 AM PDT 9.72 147 0 Not Applicable
03/12/2026 12 PM PDT 9.72 147 0 Not Applicable
03/12/2026 01 PM PDT 9.72 147 0 Not Applicable
03/12/2026 02 PM PDT 9.72 147 0 Not Applicable
03/12/2026 03 PM PDT 9.72 147 0 Not Applicable
03/12/2026 04 PM PDT 9.72 147 0 Not Applicable
03/12/2026 05 PM PDT 9.73 148 + Not Applicable
03/12/2026 06 PM PDT 9.71 145 - Not Applicable
03/12/2026 07 PM PDT 9.71 145 0 Not Applicable
03/12/2026 08 PM PDT 9.71 145 0 Not Applicable
03/12/2026 09 PM PDT 9.71 145 0 Not Applicable
03/12/2026 10 PM PDT 9.70 143 - Not Applicable
03/12/2026 11 PM PDT 9.70 143 0 Not Applicable
03/13/2026 12 AM PDT 9.69 142 - Not Applicable
03/13/2026 01 AM PDT 9.69 142 0 Not Applicable
03/13/2026 02 AM PDT 9.69 142 0 Not Applicable
03/13/2026 03 AM PDT 9.69 142 0 Not Applicable
03/13/2026 04 AM PDT 9.68 140 - Not Applicable
03/13/2026 05 AM PDT 9.69 142 + Not Applicable
03/13/2026 06 AM PDT 9.68 140 - Not Applicable
03/13/2026 07 AM PDT 9.68 140 0 Not Applicable
03/13/2026 08 AM PDT 9.68 140 0 Not Applicable
03/13/2026 09 AM PDT 9.67 139 - Not Applicable
03/13/2026 10 AM PDT 9.67 139 0 Not Applicable
03/13/2026 11 AM PDT 9.68 140 + Not Applicable
03/13/2026 12 PM PDT 9.67 139 - Not Applicable
03/13/2026 01 PM PDT 9.68 140 + Not Applicable
03/13/2026 02 PM PDT 9.68 140 0 Not Applicable
03/13/2026 03 PM PDT 9.67 139 - Not Applicable
03/13/2026 04 PM PDT 9.67 139 0 Not Applicable
03/13/2026 05 PM PDT 9.67 139 0 Not Applicable
03/13/2026 06 PM PDT 9.67 139 0 Not Applicable
03/13/2026 07 PM PDT 9.67 139 0 Not Applicable
03/13/2026 08 PM PDT 9.66 137 - Not Applicable
03/13/2026 09 PM PDT 9.65 136 - Not Applicable
03/13/2026 10 PM PDT 9.65 136 0 Not Applicable
03/13/2026 11 PM PDT 9.65 136 0 Not Applicable
03/14/2026 12 AM PDT 9.65 136 0 Not Applicable
03/14/2026 01 AM PDT 9.64 134 - Not Applicable
03/14/2026 02 AM PDT 9.64 134 0 Not Applicable
03/14/2026 03 AM PDT 9.64 134 0 Not Applicable
03/14/2026 04 AM PDT 9.64 134 0 Not Applicable
03/14/2026 05 AM PDT 9.63 132 - Not Applicable
03/14/2026 06 AM PDT 9.63 132 0 Not Applicable
03/14/2026 07 AM PDT 9.63 132 0 Not Applicable
03/14/2026 08 AM PDT 9.62 131 - Not Applicable
03/14/2026 09 AM PDT 9.62 131 0 Not Applicable
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
03/14/2026 10 AM PDT 9.62 131 Not Applicable
03/14/2026 11 AM PDT 9.62 131 0 Not Applicable
03/14/2026 12 PM PDT 9.62 131 0 Not Applicable
03/14/2026 01 PM PDT 9.61 129 - Not Applicable
03/14/2026 02 PM PDT 9.61 129 0 Not Applicable
03/14/2026 03 PM PDT 9.61 129 0 Not Applicable
03/14/2026 04 PM PDT 9.61 129 0 Not Applicable
03/14/2026 05 PM PDT 9.60 128 - Not Applicable
03/14/2026 06 PM PDT 9.60 128 0 Not Applicable
03/14/2026 07 PM PDT 9.60 128 0 Not Applicable
03/14/2026 08 PM PDT 9.60 128 0 Not Applicable
03/14/2026 09 PM PDT 9.60 128 0 Not Applicable
03/14/2026 10 PM PDT 9.60 128 0 Not Applicable
03/14/2026 11 PM PDT 9.59 126 - Not Applicable
03/15/2026 12 AM PDT 9.59 126 0 Not Applicable
03/15/2026 01 AM PDT 9.59 126 0 Not Applicable
03/15/2026 02 AM PDT 9.59 126 0 Not Applicable
03/15/2026 03 AM PDT 9.59 126 0 Not Applicable
03/15/2026 04 AM PDT 9.59 126 0 Not Applicable
03/15/2026 05 AM PDT 9.58 124 - Not Applicable
03/15/2026 06 AM PDT 9.58 124 0 Not Applicable
03/15/2026 07 AM PDT 9.58 124 0 Not Applicable
03/15/2026 08 AM PDT 9.58 124 0 Not Applicable
03/15/2026 09 AM PDT 9.58 124 0 Not Applicable
03/15/2026 10 AM PDT 9.58 124 0 Not Applicable
03/15/2026 11 AM PDT 9.57 122 - Not Applicable
03/15/2026 12 PM PDT 9.57 122 0 Not Applicable
03/15/2026 01 PM PDT 9.57 122 0 Not Applicable
03/15/2026 02 PM PDT 9.57 122 0 Not Applicable
03/15/2026 03 PM PDT 9.57 122 0 Not Applicable
03/15/2026 04 PM PDT 9.57 122 0 Not Applicable
03/15/2026 05 PM PDT 9.57 122 0 Not Applicable
03/15/2026 06 PM PDT 9.56 120 - Not Applicable
03/15/2026 07 PM PDT 9.56 120 0 Not Applicable
03/15/2026 08 PM PDT 9.56 120 0 Not Applicable
03/15/2026 09 PM PDT 9.56 120 0 Not Applicable
03/15/2026 10 PM PDT 9.56 120 0 Not Applicable
03/15/2026 11 PM PDT 9.56 120 0 Not Applicable
03/16/2026 12 AM PDT 9.56 120 0 Not Applicable
03/16/2026 01 AM PDT 9.56 120 0 Not Applicable
03/16/2026 02 AM PDT 9.55 118 - Not Applicable
03/16/2026 03 AM PDT 9.55 118 0 Not Applicable
03/16/2026 04 AM PDT 9.55 118 0 Not Applicable
03/16/2026 05 AM PDT 9.55 118 0 Not Applicable
03/16/2026 06 AM PDT 9.55 118 0 Not Applicable
03/16/2026 07 AM PDT 9.55 118 0 Not Applicable
03/16/2026 08 AM PDT 9.55 118 0 Not Applicable
03/16/2026 09 AM PDT 9.55 118 0 Not Applicable
03/16/2026 10 AM PDT 9.54 116 - Not Applicable
03/16/2026 11 AM PDT 9.54 116 0 Not Applicable
03/16/2026 12 PM PDT 9.54 116 0 Not Applicable
03/16/2026 01 PM PDT 9.54 116 0 Not Applicable
03/16/2026 02 PM PDT 9.54 116 0 Not Applicable
03/16/2026 03 PM PDT 9.54 116 0 Not Applicable
03/16/2026 04 PM PDT 9.54 116 0 Not Applicable
03/16/2026 05 PM PDT 9.54 116 0 Not Applicable
03/16/2026 06 PM PDT 9.54 116 0 Not Applicable
03/16/2026 07 PM PDT 9.53 114 - Not Applicable
03/16/2026 08 PM PDT 9.53 114 0 Not Applicable
03/16/2026 09 PM PDT 9.53 114 0 Not Applicable
03/16/2026 10 PM PDT 9.53 114 0 Not Applicable
03/16/2026 11 PM PDT 9.53 114 0 Not Applicable
03/17/2026 12 AM PDT 9.53 114 0 Not Applicable
03/17/2026 01 AM PDT 9.53 114 0 Not Applicable
03/17/2026 02 AM PDT 9.53 114 0 Not Applicable
03/17/2026 03 AM PDT 9.53 114 0 Not Applicable
03/17/2026 04 AM PDT 9.52 113 - Not Applicable
03/17/2026 05 AM PDT 9.52 113 0 Not Applicable
03/17/2026 06 AM PDT 9.52 113 0 Not Applicable
03/17/2026 07 AM PDT 9.52 113 0 Not Applicable
03/17/2026 08 AM PDT 9.52 113 0 Not Applicable
03/17/2026 09 AM PDT 9.52 113 0 Not Applicable
03/17/2026 10 AM PDT 9.52 113 0 Not Applicable
03/17/2026 11 AM PDT 9.52 113 0 Not Applicable
03/17/2026 12 PM PDT 9.52 113 0 Not Applicable
03/17/2026 01 PM PDT 9.52 113 0 Not Applicable
03/17/2026 02 PM PDT 9.52 113 0 Not Applicable
03/17/2026 03 PM PDT 9.51 111 - Not Applicable
03/17/2026 04 PM PDT 9.51 111 0 Not Applicable
03/17/2026 05 PM PDT 9.51 111 0 Not Applicable
03/17/2026 06 PM PDT 9.51 111 0 Not Applicable
03/17/2026 07 PM PDT 9.51 111 0 Not Applicable
03/17/2026 08 PM PDT 9.51 111 0 Not Applicable
03/17/2026 09 PM PDT 9.51 111 0 Not Applicable
03/17/2026 10 PM PDT 9.51 111 0 Not Applicable
03/17/2026 11 PM PDT 9.51 111 0 Not Applicable
03/18/2026 12 AM PDT 9.51 111 0 Not Applicable
03/18/2026 01 AM PDT 9.51 111 0 Not Applicable
03/18/2026 02 AM PDT 9.50 109 - Not Applicable
03/18/2026 03 AM PDT 9.50 109 0 Not Applicable
03/18/2026 04 AM PDT 9.50 109 0 Not Applicable
03/18/2026 05 AM PDT 9.50 109 0 Not Applicable
03/18/2026 06 AM PDT 9.50 109 0 Not Applicable
03/18/2026 07 AM PDT 9.50 109 0 Not Applicable
03/18/2026 08 AM PDT 9.50 109 0 Not Applicable
03/18/2026 09 AM PDT 9.50 109 0 Not Applicable
03/18/2026 10 AM PDT 9.50 109 0 Not Applicable
03/18/2026 11 AM PDT 9.50 109 0 Not Applicable
03/18/2026 12 PM PDT 9.50 109 0 Not Applicable
03/18/2026 01 PM PDT 9.49 107 - Not Applicable
03/18/2026 02 PM PDT 9.49 107 0 Not Applicable
03/18/2026 03 PM PDT 9.49 107 0 Not Applicable
03/18/2026 04 PM PDT 9.49 107 0 Not Applicable
03/18/2026 05 PM PDT 9.49 107 0 Not Applicable
03/18/2026 06 PM PDT 9.49 107 0 Not Applicable
03/18/2026 07 PM PDT 9.49 107 0 Not Applicable
03/18/2026 08 PM PDT 9.49 107 0 Not Applicable
03/18/2026 09 PM PDT 9.49 107 0 Not Applicable
03/18/2026 10 PM PDT 9.49 107 0 Not Applicable
03/18/2026 11 PM PDT 9.49 107 0 Not Applicable
03/19/2026 12 AM PDT 9.49 107 0 Not Applicable
03/19/2026 01 AM PDT 9.49 107 0 Not Applicable
03/19/2026 02 AM PDT 9.49 107 0 Not Applicable
03/19/2026 03 AM PDT 9.48 105 - Not Applicable
03/19/2026 04 AM PDT 9.48 105 0 Not Applicable
03/19/2026 05 AM PDT 9.48 105 0 Not Applicable
#
# 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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