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USGS Daily Statistics for Virginia

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The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 02056900 BLACKWATER RIVER NEAR ROCKY MOUNT, VA


Franklin County, Virginia
Hydrologic Unit Code 03010101
Latitude  37°02'42", Longitude  79°50'40" NAD27
Drainage area 115  square miles
Gage datum 876.45 feet above NGVD29
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00060, Discharge, cubic feet per second,
Day of
month
Mean of daily mean values for each day for 42 - 43 years of record in, ft3/s   (Calculation Period 1976-10-01 -> 2019-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 142 127 220 183 149 104 81 70 62 116 85 169
2 135 138 183 194 150 112 94 80 60 116 101 140
3 137 166 177 205 142 114 107 81 58 105 105 133
4 177 207 247 187 150 123 125 70 68 95 169 122
5 133 158 235 201 185 246 141 60 95 83 213 134
6 113 143 228 172 172 152 99 74 225 72 114 116
7 127 140 199 167 169 163 79 63 192 76 112 153
8 151 126 174 158 157 150 81 59 197 132 118 125
9 153 129 175 230 150 206 77 102 101 199 100 131
10 123 129 194 273 148 154 69 74 75 126 118 129
11 137 152 168 196 136 136 84 61 65 168 119 141
12 146 146 153 174 128 120 93 101 67 120 200 136
13 121 124 182 176 123 139 85 80 59 110 134 132
14 166 153 170 234 138 105 107 62 61 90 98 130
15 192 138 176 212 142 96 120 53 57 84 106 140
16 182 162 181 306 137 107 79 60 94 75 128 147
17 150 172 182 223 133 128 87 80 144 72 114 124
18 158 158 196 195 148 110 78 144 84 79 96 117
19 202 147 187 173 156 124 64 78 83 82 122 108
20 158 147 204 205 145 101 66 77 63 77 104 107
21 148 152 255 237 134 94 61 68 70 84 91 132
22 134 207 193 259 137 96 61 62 164 83 93 115
23 149 207 173 163 139 101 75 58 124 104 107 141
24 152 218 212 272 140 98 66 87 76 82 113 142
25 212 215 175 274 158 87 63 63 67 91 114 151
26 200 201 179 296 130 156 79 58 81 141 116 149
27 173 164 186 276 130 148 73 61 109 106 119 126
28 185 155 256 188 130 105 74 63 173 118 112 138
29 140 143 229 179 135 106 63 55 136 91 154 141
30 127   220 159 123 90 65 50 174 80 129 123
31 165   205   111   76 52   77   118