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USGS Daily Statistics for Maryland

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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 01491000 CHOPTANK RIVER NEAR GREENSBORO, MD


Caroline County, Maryland
Hydrologic Unit Code 02060005
Latitude  38°59'49.9", Longitude  75°47'08.9" NAD83
Drainage area 113  square miles
Gage datum 2.73 feet above NAVD88
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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 1947-10-01 -> 2022-09-30)

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
1 203 162 243 253 162 140 63 57 55 89 87 126
2 235 173 250 265 157 144 58 68 53 77 115 121
3 210 205 274 254 161 124 58 64 52 68 131 122
4 186 214 274 225 150 110 60 162 69 61 105 123
5 169 234 259 213 153 113 57 174 59 52 90 132
6 169 228 237 215 160 110 61 130 48 48 93 142
7 163 215 267 205 166 102 62 95 47 48 98 142
8 166 213 268 240 162 141 57 84 46 46 111 197
9 180 197 269 244 152 122 58 81 50 50 107 188
10 184 181 250 223 143 104 69 68 54 59 94 195
11 177 195 229 230 140 111 79 59 67 64 83 160
12 180 216 237 207 143 115 73 61 93 83 96 161
13 182 210 259 204 159 108 110 83 106 82 131 163
14 183 218 312 247 140 114 128 120 65 65 129 203
15 188 226 326 248 122 91 102 92 57 57 122 219
16 178 250 267 297 117 78 79 71 96 52 118 201
17 170 235 251 286 125 117 71 63 125 53 115 207
18 171 219 258 214 129 143 62 59 71 53 110 178
19 195 236 258 177 136 156 55 58 67 59 95 168
20 210 256 275 163 144 150 51 62 65 71 92 160
21 217 222 270 162 143 148 54 62 55 70 99 166
22 213 225 322 155 124 137 58 69 49 61 100 203
23 192 255 300 149 122 136 57 93 52 54 106 185
24 204 320 276 149 123 110 55 75 65 55 100 171
25 226 330 291 163 118 89 59 80 69 66 112 212
26 250 329 254 167 149 89 64 123 67 81 132 219
27 237 284 255 167 163 98 60 104 77 94 122 220
28 235 241 271 179 124 83 59 196 80 91 112 172
29 259 176 298 174 115 73 57 164 69 101 113 167
30 203   292 158 150 63 70 96 76 167 123 172
31 165   271   148   58 63   126   187