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USGS Daily Statistics for the Nation

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 -> 2024-09-30)

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
1 203 162 242 249 173 137 62 57 54 88 86 125
2 236 173 248 262 163 142 57 67 52 77 113 119
3 210 205 272 251 165 122 57 63 51 68 128 121
4 187 213 273 223 152 109 59 158 67 62 103 123
5 170 233 257 210 154 111 56 171 58 57 89 131
6 169 226 235 221 160 108 61 127 47 53 92 140
7 163 213 265 224 166 100 61 93 47 50 97 142
8 166 212 266 252 164 139 57 83 46 47 109 197
9 180 196 267 250 155 120 59 79 49 50 105 188
10 183 180 248 225 145 103 73 67 53 59 92 194
11 176 194 228 230 140 109 82 58 66 63 82 159
12 180 215 236 207 142 113 73 60 92 82 95 160
13 181 210 257 202 158 106 109 82 106 81 129 162
14 183 218 309 244 140 112 126 117 67 64 127 201
15 187 225 323 245 123 90 101 91 58 57 120 218
16 177 248 264 293 117 77 78 70 94 52 116 213
17 169 234 248 281 125 115 73 62 123 53 114 219
18 170 219 255 211 128 140 63 58 70 53 109 182
19 193 236 256 178 134 153 57 57 66 58 94 170
20 208 255 273 166 142 147 52 60 64 70 90 161
21 215 222 267 162 141 145 54 61 54 69 97 167
22 212 224 319 155 123 134 59 68 49 60 100 203
23 191 253 297 149 121 134 57 91 52 54 108 187
24 203 318 273 149 121 108 55 74 65 55 100 175
25 225 327 288 162 116 88 58 78 69 66 110 213
26 250 326 252 165 147 88 64 120 67 80 130 219
27 239 281 253 166 160 96 59 101 76 93 120 219
28 235 240 269 177 123 81 58 192 79 90 111 172
29 258 176 296 197 114 72 57 161 69 99 112 167
30 202   289 181 147 62 69 94 75 164 121 172
31 165   267   146   58 62   124   187