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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 01643580 MONOCACY RIVER NEAR DICKERSON, MD


Frederick County, Maryland
Hydrologic Unit Code 02070009
Latitude  39°15'48.23", Longitude  77°26'08.67" NAD83
Drainage area 961  square miles
Gage datum 198.05 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 2022-10-01 -> 2025-09-30)

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
1 844 1,110 872 1,270 526 1,920 373 180 336 493 156 294
2 797 1,030 1,130 3,870 492 1,210 330 161 265 806 154 265
3 671 985 2,690 7,590 474 990 301 190 231 659 153 247
4 583 864 1,360 7,370 703 861 275 197 209 440 152 247
5 502 779 1,300 2,980 1,200 771 251 196 187 361 152 257
6 447 743 2,050 2,300 1,920 912 267 203 169 310 158 273
7 723 885 1,780 2,310 2,240 1,200 227 239 164 291 158 240
8 999 1,050 1,430 1,980 1,230 888 210 1,920 184 268 159 229
9 1,540 832 1,470 1,600 1,070 835 210 3,730 171 238 158 240
10 9,570 734 6,040 1,340 2,020 969 200 4,780 180 226 158 258
11 4,400 700 2,430 1,230 1,330 883 179 1,040 172 215 170 771
12 1,600 672 1,640 1,350 1,300 688 165 628 166 204 173 2,620
13 2,680 1,640 1,350 1,510 1,490 590 167 470 198 197 173 1,340
14 2,340 3,510 1,160 1,310 5,860 645 165 388 171 190 176 760
15 1,190 2,080 1,050 1,110 4,060 666 167 339 156 200 183 572
16 942 1,630 1,000 1,040 3,210 738 166 303 148 189 183 581
17 811 2,690 991 933 2,650 765 159 355 147 233 181 742
18 703 1,730 1,070 864 1,690 3,240 154 430 171 228 180 5,310
19 721 1,220 910 820 1,380 1,540 154 304 174 204 178 4,100
20 638 976 817 792 1,200 1,610 146 266 163 192 175 1,210
21 548 894 764 769 1,020 989 172 238 157 184 203 906
22 545 863 718 722 1,080 571 199 218 152 178 988 758
23 576 1,210 1,100 669 1,840 518 317 204 170 171 1,350 633
24 587 1,400 2,410 632 1,220 499 481 194 358 169 519 536
25 705 1,080 1,120 601 929 493 305 189 378 165 379 545
26 1,140 957 910 603 903 507 229 185 583 161 316 506
27 1,100 893 839 609 868 434 190 185 548 155 273 508
28 2,890 862 821 595 1,500 396 174 193 429 156 274 1,070
29 4,360 1,130 776 558 3,940 442 173 252 391 155 286 1,380
30 1,990   726 532 1,660 656 158 505 423 157 328 1,020
31 1,340   709   2,540   167 322   159   879