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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 01573000 Swatara Creek at Harper Tavern, PA


Lebanon County, Pennsylvania
Hydrologic Unit Code 02050305
Latitude  40°24'09", Longitude  76°34'39" NAD27
Drainage area 337  square miles
Gage datum 356.68 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 1918-10-01 -> 2023-09-30)

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
1 680 591 903 1,040 765 560 397 278 357 460 500 786
2 751 641 920 1,100 646 561 376 307 465 342 471 795
3 714 701 876 1,120 665 528 387 282 327 373 541 697
4 704 756 918 1,040 699 495 319 369 250 314 437 721
5 652 670 1,160 1,040 722 488 346 298 241 294 421 844
6 692 581 1,180 1,100 699 569 337 262 311 303 401 851
7 655 714 1,100 1,110 703 493 326 273 427 260 410 836
8 673 716 1,000 949 666 459 396 255 740 268 434 772
9 715 578 988 950 679 401 327 253 432 323 565 727
10 666 548 968 927 663 384 336 251 272 372 463 683
11 602 641 1,130 866 656 436 294 267 251 296 415 767
12 570 708 1,230 864 756 440 295 336 228 276 443 795
13 554 680 1,130 886 717 473 307 430 297 259 565 790
14 573 750 1,090 880 666 445 326 399 269 282 465 847
15 599 758 1,160 948 682 371 316 257 266 305 473 738
16 572 708 1,020 1,070 720 353 314 227 234 284 534 715
17 557 705 1,010 1,130 788 332 341 298 259 316 648 738
18 543 684 999 882 653 401 311 283 374 321 551 686
19 605 728 972 781 703 422 316 337 417 427 518 604
20 772 740 1,050 776 732 445 310 214 318 443 546 585
21 767 774 1,100 726 678 493 305 243 244 406 558 787
22 759 805 1,280 719 737 734 318 274 260 331 580 722
23 661 857 1,160 701 731 770 474 265 298 400 629 667
24 809 1,010 1,120 664 614 461 529 394 277 422 516 697
25 979 1,080 1,070 711 603 378 469 307 293 401 602 793
26 905 1,110 1,010 678 667 490 364 237 395 420 635 726
27 876 954 1,080 687 597 467 300 193 435 436 573 685
28 781 959 1,090 753 559 649 248 259 438 481 712 639
29 649 727 1,060 714 666 562 274 228 354 485 822 645
30 627   938 682 645 454 302 185 414 483 727 709
31 651   993   609   241 233   447   686