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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 water year of record in, ft3/s   (Calculation Period 1976-10-01 -> 2020-09-30)

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
1 140 129 221 183 150 104 82 71 62 114 94 172
2 134 139 191 194 152 112 95 81 60 114 102 142
3 136 166 182 205 144 114 111 82 58 103 105 133
4 175 205 251 187 152 123 126 71 68 94 167 122
5 133 158 238 201 190 242 152 61 94 82 211 134
6 113 169 230 173 174 151 102 75 221 71 113 116
7 130 170 201 167 170 163 81 64 189 75 112 151
8 153 138 176 159 158 211 83 60 194 130 117 124
9 155 136 177 229 151 239 82 102 100 196 100 130
10 126 134 197 271 148 169 72 74 75 125 117 129
11 139 158 171 196 137 146 87 61 65 166 119 140
12 158 153 156 174 132 126 95 101 67 119 197 135
13 128 133 184 177 129 144 87 80 59 109 132 131
14 170 159 171 239 139 109 108 62 61 89 97 133
15 193 143 178 228 143 99 120 53 57 83 105 142
16 183 165 182 310 138 110 80 61 94 74 127 147
17 152 174 183 226 134 131 87 80 142 72 113 124
18 159 163 196 197 149 114 79 142 83 79 95 118
19 201 150 187 179 156 129 66 78 82 81 121 108
20 166 150 204 215 145 104 67 77 63 78 103 107
21 152 160 254 240 134 96 62 69 70 84 90 132
22 137 216 193 261 137 98 63 63 161 83 93 115
23 151 233 174 165 139 103 77 59 122 104 106 140
24 161 236 212 272 140 100 68 87 76 82 113 141
25 227 223 176 273 157 89 65 63 66 91 113 149
26 205 206 180 295 130 156 80 58 80 139 115 148
27 177 170 186 275 129 149 74 61 108 114 118 125
28 187 160 254 188 130 106 75 64 170 120 111 136
29 143 141 228 179 135 108 63 55 135 91 152 140
30 130   219 160 123 92 66 50 171 80 128 123
31 166   204   111   77 53   80   118