# Tabular Observed and Forecast Hydrograph Information
#
# Location: Mattole River - Ettersburg (ETTC1)
#
# File Generation Time: 04/21/2026 at 08:03 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 04/20/2026 at 06:00 PM PDT
# Maximum Observed Stage: 9.71 Feet
# Maximum Observed Flow: 154 cfs
#
# Earliest Date & Time of Maximum Forecast: 04/21/2026 at 08:00 PM PDT
# Maximum Forecast Stage: 10.22 Feet
# Maximum Forecast Flow: 243 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
04/16/2026 08 AM PDT 9.66 146 Not Applicable
04/16/2026 09 AM PDT 9.65 144 - Not Applicable
04/16/2026 10 AM PDT 9.64 143 - Not Applicable
04/16/2026 11 AM PDT 9.63 141 - Not Applicable
04/16/2026 12 PM PDT 9.63 141 0 Not Applicable
04/16/2026 01 PM PDT 9.63 141 0 Not Applicable
04/16/2026 02 PM PDT 9.61 138 - Not Applicable
04/16/2026 03 PM PDT 9.62 140 + Not Applicable
04/16/2026 04 PM PDT 9.60 137 - Not Applicable
04/16/2026 05 PM PDT 9.60 137 0 Not Applicable
04/16/2026 06 PM PDT 9.59 135 - Not Applicable
04/16/2026 07 PM PDT 9.58 134 - Not Applicable
04/16/2026 08 PM PDT 9.58 134 0 Not Applicable
04/16/2026 09 PM PDT 9.58 134 0 Not Applicable
04/16/2026 10 PM PDT 9.57 132 - Not Applicable
04/16/2026 11 PM PDT 9.57 132 0 Not Applicable
04/17/2026 12 AM PDT 9.56 131 - Not Applicable
04/17/2026 01 AM PDT 9.55 129 - Not Applicable
04/17/2026 02 AM PDT 9.56 131 + Not Applicable
04/17/2026 03 AM PDT 9.55 129 - Not Applicable
04/17/2026 04 AM PDT 9.55 129 0 Not Applicable
04/17/2026 05 AM PDT 9.54 128 - Not Applicable
04/17/2026 06 AM PDT 9.53 126 - Not Applicable
04/17/2026 07 AM PDT 9.53 126 0 Not Applicable
04/17/2026 08 AM PDT 9.53 126 0 Not Applicable
04/17/2026 09 AM PDT 9.53 126 0 Not Applicable
04/17/2026 10 AM PDT 9.53 126 0 Not Applicable
04/17/2026 11 AM PDT 9.52 125 - Not Applicable
04/17/2026 12 PM PDT 9.52 125 0 Not Applicable
04/17/2026 01 PM PDT 9.52 125 0 Not Applicable
04/17/2026 02 PM PDT 9.53 126 + Not Applicable
04/17/2026 03 PM PDT 9.52 125 - Not Applicable
04/17/2026 04 PM PDT 9.52 125 0 Not Applicable
04/17/2026 05 PM PDT 9.51 124 - Not Applicable
04/17/2026 06 PM PDT 9.50 122 - Not Applicable
04/17/2026 07 PM PDT 9.50 122 0 Not Applicable
04/17/2026 08 PM PDT 9.49 121 - Not Applicable
04/17/2026 09 PM PDT 9.49 121 0 Not Applicable
04/17/2026 10 PM PDT 9.49 121 0 Not Applicable
04/17/2026 11 PM PDT 9.48 119 - Not Applicable
04/18/2026 12 AM PDT 9.47 118 - Not Applicable
04/18/2026 01 AM PDT 9.47 118 0 Not Applicable
04/18/2026 02 AM PDT 9.47 118 0 Not Applicable
04/18/2026 03 AM PDT 9.47 118 0 Not Applicable
04/18/2026 04 AM PDT 9.46 117 - Not Applicable
04/18/2026 05 AM PDT 9.46 117 0 Not Applicable
04/18/2026 06 AM PDT 9.45 115 - Not Applicable
04/18/2026 07 AM PDT 9.45 115 0 Not Applicable
04/18/2026 08 AM PDT 9.44 114 - Not Applicable
04/18/2026 09 AM PDT 9.45 115 + Not Applicable
04/18/2026 10 AM PDT 9.45 115 0 Not Applicable
04/18/2026 11 AM PDT 9.45 115 0 Not Applicable
04/18/2026 12 PM PDT 9.44 114 - Not Applicable
04/18/2026 01 PM PDT 9.45 115 + Not Applicable
04/18/2026 02 PM PDT 9.45 115 0 Not Applicable
04/18/2026 03 PM PDT 9.45 115 0 Not Applicable
04/18/2026 04 PM PDT 9.44 114 - Not Applicable
04/18/2026 05 PM PDT 9.44 114 0 Not Applicable
04/18/2026 06 PM PDT 9.43 112 - Not Applicable
04/18/2026 07 PM PDT 9.42 111 - Not Applicable
04/18/2026 08 PM PDT 9.43 112 + Not Applicable
04/18/2026 09 PM PDT 9.42 111 - Not Applicable
04/18/2026 10 PM PDT 9.41 110 - Not Applicable
04/18/2026 11 PM PDT 9.42 111 + Not Applicable
04/19/2026 12 AM PDT 9.41 110 - Not Applicable
04/19/2026 01 AM PDT 9.41 110 0 Not Applicable
04/19/2026 02 AM PDT 9.40 108 - Not Applicable
04/19/2026 03 AM PDT 9.40 108 0 Not Applicable
04/19/2026 04 AM PDT 9.40 108 0 Not Applicable
04/19/2026 05 AM PDT 9.40 108 0 Not Applicable
04/19/2026 06 AM PDT 9.39 107 - Not Applicable
04/19/2026 07 AM PDT 9.39 107 0 Not Applicable
04/19/2026 08 AM PDT 9.39 107 0 Not Applicable
04/19/2026 09 AM PDT 9.39 107 0 Not Applicable
04/19/2026 10 AM PDT 9.39 107 0 Not Applicable
04/19/2026 11 AM PDT 9.39 107 0 Not Applicable
04/19/2026 12 PM PDT 9.39 107 0 Not Applicable
04/19/2026 01 PM PDT 9.38 106 - Not Applicable
04/19/2026 02 PM PDT 9.39 107 + Not Applicable
04/19/2026 03 PM PDT 9.39 107 0 Not Applicable
04/19/2026 04 PM PDT 9.38 106 - Not Applicable
04/19/2026 05 PM PDT 9.38 106 0 Not Applicable
04/19/2026 06 PM PDT 9.37 104 - Not Applicable
04/19/2026 07 PM PDT 9.37 104 0 Not Applicable
04/19/2026 08 PM PDT 9.36 103 - Not Applicable
04/19/2026 09 PM PDT 9.36 103 0 Not Applicable
04/19/2026 10 PM PDT 9.36 103 0 Not Applicable
04/19/2026 11 PM PDT 9.36 103 0 Not Applicable
04/20/2026 12 AM PDT 9.36 103 0 Not Applicable
04/20/2026 01 AM PDT 9.36 103 0 Not Applicable
04/20/2026 02 AM PDT 9.35 102 - Not Applicable
04/20/2026 03 AM PDT 9.35 102 0 Not Applicable
04/20/2026 04 AM PDT 9.35 102 0 Not Applicable
04/20/2026 05 AM PDT 9.37 104 + Not Applicable
04/20/2026 06 AM PDT 9.38 106 + Not Applicable
04/20/2026 07 AM PDT 9.38 106 0 Not Applicable
04/20/2026 08 AM PDT 9.39 107 + Not Applicable
04/20/2026 09 AM PDT 9.42 111 + Not Applicable
04/20/2026 10 AM PDT 9.46 117 + Not Applicable
04/20/2026 11 AM PDT 9.49 121 + Not Applicable
04/20/2026 12 PM PDT 9.55 129 + Not Applicable
04/20/2026 01 PM PDT 9.60 137 + Not Applicable
04/20/2026 02 PM PDT 9.64 143 + Not Applicable
04/20/2026 03 PM PDT 9.67 147 + Not Applicable
04/20/2026 04 PM PDT 9.69 150 + Not Applicable
04/20/2026 05 PM PDT 9.70 152 + Not Applicable
04/20/2026 06 PM PDT 9.71 154 + Not Applicable
04/20/2026 07 PM PDT 9.70 152 - Not Applicable
04/20/2026 08 PM PDT 9.69 150 - Not Applicable
04/20/2026 09 PM PDT 9.68 149 - Not Applicable
04/20/2026 10 PM PDT 9.66 146 - Not Applicable
04/20/2026 11 PM PDT 9.66 146 0 Not Applicable
04/21/2026 12 AM PDT 9.65 144 - Not Applicable
04/21/2026 01 AM PDT 9.63 141 - Not Applicable
04/21/2026 02 AM PDT 9.63 141 0 Not Applicable
04/21/2026 03 AM PDT 9.62 140 - Not Applicable
04/21/2026 04 AM PDT 9.60 137 - Not Applicable
04/21/2026 05 AM PDT 9.59 135 - Not Applicable
04/21/2026 06 AM PDT 9.61 138 + Not Applicable
04/21/2026 07 AM PDT 9.62 140 + Not Applicable
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
04/21/2026 08 AM PDT 9.62 140 Not Applicable
04/21/2026 09 AM PDT 9.63 141 + Not Applicable
04/21/2026 10 AM PDT 9.66 146 + Not Applicable
04/21/2026 11 AM PDT 9.72 155 + Not Applicable
04/21/2026 12 PM PDT 9.79 166 + Not Applicable
04/21/2026 01 PM PDT 9.88 181 + Not Applicable
04/21/2026 02 PM PDT 9.96 195 + Not Applicable
04/21/2026 03 PM PDT 10.05 211 + Not Applicable
04/21/2026 04 PM PDT 10.12 224 + Not Applicable
04/21/2026 05 PM PDT 10.18 235 + Not Applicable
04/21/2026 06 PM PDT 10.20 239 + Not Applicable
04/21/2026 07 PM PDT 10.21 241 + Not Applicable
04/21/2026 08 PM PDT 10.22 243 + Not Applicable
04/21/2026 09 PM PDT 10.22 243 0 Not Applicable
04/21/2026 10 PM PDT 10.21 241 - Not Applicable
04/21/2026 11 PM PDT 10.20 239 - Not Applicable
04/22/2026 12 AM PDT 10.18 235 - Not Applicable
04/22/2026 01 AM PDT 10.16 231 - Not Applicable
04/22/2026 02 AM PDT 10.14 227 - Not Applicable
04/22/2026 03 AM PDT 10.12 224 - Not Applicable
04/22/2026 04 AM PDT 10.11 222 - Not Applicable
04/22/2026 05 AM PDT 10.10 220 - Not Applicable
04/22/2026 06 AM PDT 10.10 220 0 Not Applicable
04/22/2026 07 AM PDT 10.10 220 0 Not Applicable
04/22/2026 08 AM PDT 10.10 220 0 Not Applicable
04/22/2026 09 AM PDT 10.07 215 - Not Applicable
04/22/2026 10 AM PDT 10.01 204 - Not Applicable
04/22/2026 11 AM PDT 9.94 192 - Not Applicable
04/22/2026 12 PM PDT 9.89 183 - Not Applicable
04/22/2026 01 PM PDT 9.87 180 - Not Applicable
04/22/2026 02 PM PDT 9.86 178 - Not Applicable
04/22/2026 03 PM PDT 9.86 178 0 Not Applicable
04/22/2026 04 PM PDT 9.86 178 0 Not Applicable
04/22/2026 05 PM PDT 9.86 178 0 Not Applicable
04/22/2026 06 PM PDT 9.86 178 0 Not Applicable
04/22/2026 07 PM PDT 9.86 178 0 Not Applicable
04/22/2026 08 PM PDT 9.85 176 - Not Applicable
04/22/2026 09 PM PDT 9.85 176 0 Not Applicable
04/22/2026 10 PM PDT 9.85 176 0 Not Applicable
04/22/2026 11 PM PDT 9.84 175 - Not Applicable
04/23/2026 12 AM PDT 9.84 175 0 Not Applicable
04/23/2026 01 AM PDT 9.83 173 - Not Applicable
04/23/2026 02 AM PDT 9.83 173 0 Not Applicable
04/23/2026 03 AM PDT 9.82 171 - Not Applicable
04/23/2026 04 AM PDT 9.81 170 - Not Applicable
04/23/2026 05 AM PDT 9.81 170 0 Not Applicable
04/23/2026 06 AM PDT 9.80 168 - Not Applicable
04/23/2026 07 AM PDT 9.80 168 0 Not Applicable
04/23/2026 08 AM PDT 9.79 166 - Not Applicable
04/23/2026 09 AM PDT 9.78 165 - Not Applicable
04/23/2026 10 AM PDT 9.78 165 0 Not Applicable
04/23/2026 11 AM PDT 9.77 163 - Not Applicable
04/23/2026 12 PM PDT 9.77 163 0 Not Applicable
04/23/2026 01 PM PDT 9.76 162 - Not Applicable
04/23/2026 02 PM PDT 9.76 162 0 Not Applicable
04/23/2026 03 PM PDT 9.75 160 - Not Applicable
04/23/2026 04 PM PDT 9.75 160 0 Not Applicable
04/23/2026 05 PM PDT 9.74 158 - Not Applicable
04/23/2026 06 PM PDT 9.74 158 0 Not Applicable
04/23/2026 07 PM PDT 9.73 157 - Not Applicable
04/23/2026 08 PM PDT 9.73 157 0 Not Applicable
04/23/2026 09 PM PDT 9.72 155 - Not Applicable
04/23/2026 10 PM PDT 9.72 155 0 Not Applicable
04/23/2026 11 PM PDT 9.71 154 - Not Applicable
04/24/2026 12 AM PDT 9.71 154 0 Not Applicable
04/24/2026 01 AM PDT 9.70 152 - Not Applicable
04/24/2026 02 AM PDT 9.70 152 0 Not Applicable
04/24/2026 03 AM PDT 9.70 152 0 Not Applicable
04/24/2026 04 AM PDT 9.69 150 - Not Applicable
04/24/2026 05 AM PDT 9.69 150 0 Not Applicable
04/24/2026 06 AM PDT 9.68 149 - Not Applicable
04/24/2026 07 AM PDT 9.68 149 0 Not Applicable
04/24/2026 08 AM PDT 9.67 147 - Not Applicable
04/24/2026 09 AM PDT 9.67 147 0 Not Applicable
04/24/2026 10 AM PDT 9.66 146 - Not Applicable
04/24/2026 11 AM PDT 9.66 146 0 Not Applicable
04/24/2026 12 PM PDT 9.65 144 - Not Applicable
04/24/2026 01 PM PDT 9.65 144 0 Not Applicable
04/24/2026 02 PM PDT 9.65 144 0 Not Applicable
04/24/2026 03 PM PDT 9.64 143 - Not Applicable
04/24/2026 04 PM PDT 9.64 143 0 Not Applicable
04/24/2026 05 PM PDT 9.63 141 - Not Applicable
04/24/2026 06 PM PDT 9.63 141 0 Not Applicable
04/24/2026 07 PM PDT 9.62 140 - Not Applicable
04/24/2026 08 PM PDT 9.62 140 0 Not Applicable
04/24/2026 09 PM PDT 9.62 140 0 Not Applicable
04/24/2026 10 PM PDT 9.61 138 - Not Applicable
04/24/2026 11 PM PDT 9.61 138 0 Not Applicable
04/25/2026 12 AM PDT 9.61 138 0 Not Applicable
04/25/2026 01 AM PDT 9.60 137 - Not Applicable
04/25/2026 02 AM PDT 9.60 137 0 Not Applicable
04/25/2026 03 AM PDT 9.59 135 - Not Applicable
04/25/2026 04 AM PDT 9.59 135 0 Not Applicable
04/25/2026 05 AM PDT 9.59 135 0 Not Applicable
04/25/2026 06 AM PDT 9.58 134 - Not Applicable
04/25/2026 07 AM PDT 9.58 134 0 Not Applicable
04/25/2026 08 AM PDT 9.57 132 - Not Applicable
04/25/2026 09 AM PDT 9.57 132 0 Not Applicable
04/25/2026 10 AM PDT 9.57 132 0 Not Applicable
04/25/2026 11 AM PDT 9.56 131 - Not Applicable
04/25/2026 12 PM PDT 9.56 131 0 Not Applicable
04/25/2026 01 PM PDT 9.55 129 - Not Applicable
04/25/2026 02 PM PDT 9.55 129 0 Not Applicable
04/25/2026 03 PM PDT 9.55 129 0 Not Applicable
04/25/2026 04 PM PDT 9.54 128 - Not Applicable
04/25/2026 05 PM PDT 9.54 128 0 Not Applicable
04/25/2026 06 PM PDT 9.54 128 0 Not Applicable
04/25/2026 07 PM PDT 9.53 126 - Not Applicable
04/25/2026 08 PM PDT 9.53 126 0 Not Applicable
04/25/2026 09 PM PDT 9.53 126 0 Not Applicable
04/25/2026 10 PM PDT 9.52 125 - Not Applicable
04/25/2026 11 PM PDT 9.52 125 0 Not Applicable
04/26/2026 12 AM PDT 9.52 125 0 Not Applicable
04/26/2026 01 AM PDT 9.51 124 - Not Applicable
04/26/2026 02 AM PDT 9.51 124 0 Not Applicable
04/26/2026 03 AM PDT 9.51 124 0 Not Applicable
04/26/2026 04 AM PDT 9.50 122 - Not Applicable
04/26/2026 05 AM PDT 9.50 122 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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