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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 01642190 MONOCACY RIVER AT MONOCACY BLVD AT FREDERICK, MD


Frederick County, Maryland
Hydrologic Unit Code 02070009
Latitude  39°26'36.9", Longitude  77°22'56.2" NAD83
Drainage area 703  square miles
Gage datum 240.00 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 2003-10-01 -> 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 1,180 939 1,570 1,230 2,280 518 355 310 475 874 1,010 916
2 1,190 1,070 1,820 1,630 1,050 1,040 311 442 1,400 646 618 1,120
3 1,170 1,160 1,570 2,170 1,120 683 281 497 356 662 901 968
4 995 1,790 1,430 1,570 1,210 822 274 807 221 510 504 760
5 891 1,660 1,590 1,080 1,660 797 310 495 219 471 579 642
6 958 1,400 1,480 1,010 1,830 995 373 326 250 363 808 610
7 929 1,800 1,720 1,190 2,140 612 365 291 483 324 677 1,060
8 1,030 1,380 1,250 1,160 1,500 501 943 373 838 412 581 1,100
9 955 1,010 1,220 932 1,070 487 539 595 1,280 394 609 970
10 1,710 930 1,860 809 935 505 343 508 1,610 305 584 1,360
11 1,080 970 2,190 770 885 914 274 265 830 517 430 1,860
12 1,280 1,010 1,660 939 1,550 899 274 248 447 786 521 2,170
13 1,360 1,110 1,730 1,420 1,440 748 315 361 392 384 825 1,020
14 1,470 1,240 1,820 1,260 1,090 712 295 295 347 449 643 870
15 1,160 1,110 1,310 1,470 904 744 345 227 375 592 485 1,010
16 1,040 1,190 1,100 1,640 1,640 493 286 210 343 477 714 1,890
17 867 1,470 1,020 2,060 1,840 425 382 198 339 373 1,170 1,590
18 945 1,080 901 1,110 1,000 511 278 197 757 502 729 1,500
19 871 968 1,010 910 1,360 532 262 244 807 486 609 1,020
20 1,010 922 1,230 1,500 1,110 450 265 225 313 530 864 1,010
21 832 993 1,080 1,680 851 554 262 296 251 358 577 1,160
22 626 1,240 1,500 1,070 832 408 952 560 462 315 687 1,060
23 813 1,330 1,160 1,050 817 394 897 290 937 305 1,470 1,670
24 1,290 1,420 1,550 991 759 424 723 240 1,170 341 1,100 1,590
25 1,680 1,970 1,220 841 664 403 660 192 649 441 1,280 1,790
26 1,640 1,490 1,040 930 698 571 639 173 543 484 735 1,640
27 1,010 1,440 928 1,260 633 625 355 168 701 467 819 1,850
28 1,020 1,290 1,120 1,080 673 1,560 358 187 1,550 1,030 717 1,470
29 884 1,060 1,580 1,270 685 586 458 311 1,640 1,300 775 1,390
30 730   1,330 1,560 651 407 326 203 821 2,030 1,080 1,270
31 1,270   1,410   532   346 183   1,320   1,050