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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 01573560 Swatara Creek near Hershey, PA


Dauphin County, Pennsylvania
Hydrologic Unit Code 02050305
Latitude  40°17'54", Longitude  76°40'05" NAD27
Drainage area 483  square miles
Gage datum 325.94 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 1975-10-01 -> 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
1 914 850 1,080 1,400 1,070 781 662 370 441 650 798 1,100
2 987 1,000 1,220 1,430 881 764 581 436 645 532 685 1,160
3 938 988 1,190 1,550 908 694 505 397 560 508 695 1,020
4 899 1,140 1,140 1,570 889 723 467 485 334 493 568 973
5 850 1,090 1,510 1,420 899 767 596 514 406 465 533 1,010
6 821 895 1,570 1,300 1,030 832 568 448 528 430 570 994
7 772 855 1,330 1,290 1,080 775 574 570 822 372 550 936
8 892 813 1,170 1,210 972 654 599 500 1,900 441 541 881
9 1,030 711 1,150 1,150 977 612 489 465 1,700 582 644 785
10 1,040 658 1,310 1,220 890 592 433 498 638 705 601 836
11 894 735 1,470 1,230 892 764 400 439 436 637 617 1,020
12 848 821 1,460 1,180 909 757 402 624 372 586 656 1,190
13 866 779 1,300 1,260 881 794 553 726 465 449 781 1,140
14 885 737 1,400 1,230 975 729 554 737 462 467 667 1,220
15 831 829 1,490 1,320 1,050 581 584 469 323 521 659 1,090
16 796 866 1,280 1,670 1,110 557 506 407 333 473 709 1,040
17 754 944 1,130 1,690 1,280 570 512 355 426 475 892 1,100
18 746 924 1,140 1,270 995 617 509 362 736 516 737 1,180
19 805 887 1,130 1,080 1,020 601 417 411 899 713 648 1,070
20 1,120 912 1,170 1,030 1,130 664 363 345 485 768 675 876
21 1,160 964 1,370 954 913 793 353 442 348 786 751 1,020
22 860 985 1,780 974 791 688 380 520 405 640 743 1,000
23 829 1,030 1,610 915 800 624 639 422 497 550 921 978
24 1,120 1,330 1,510 871 794 600 988 364 505 591 806 1,110
25 1,540 1,580 1,340 915 751 567 987 305 418 560 835 1,430
26 1,310 1,440 1,260 887 719 735 857 283 453 549 755 1,230
27 1,480 1,130 1,450 918 707 746 600 256 444 560 829 1,000
28 1,290 1,060 1,500 882 639 1,010 439 388 616 764 979 951
29 1,010 1,290 1,530 871 791 1,100 402 416 631 839 1,260 922
30 938   1,350 863 902 656 406 319 527 843 1,000 861
31 923   1,300   859   364 308   794   814