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USGS Daily Statistics for Pennsylvania

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[!] Over the next year, the USGS Pennsylvania Water Science Center will be updating the geodetic vertical elevation (gage datum) for many locations. Click HERE for additional information including a current list of streamgages with upcoming datum changes. This update in gage datum does not affect the location of the streamgage, nor the observed local gage height or discharge recorded at the streamgage.


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 01481500 BRANDYWINE CREEK AT WILMINGTON, DE


New Castle County, Delaware
Hydrologic Unit Code 02040205
Latitude  39°46'10.2", Longitude  75°34'36.1" NAD83
Drainage area 314  square miles
Gage datum 67.17 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 1973-10-01 -> 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
1 571 539 641 826 896 483 389 342 293 466 342 560
2 573 584 728 888 601 500 397 284 576 335 300 541
3 557 674 657 899 592 500 376 269 286 326 384 489
4 567 695 631 807 600 515 378 369 261 284 305 449
5 513 659 739 788 586 477 407 394 242 299 350 517
6 481 604 654 720 634 496 366 266 396 291 341 547
7 495 619 646 681 617 489 400 299 407 247 327 493
8 556 534 643 687 592 465 385 321 355 313 360 547
9 558 481 745 679 583 500 334 354 348 414 384 536
10 633 487 812 764 561 485 367 389 290 361 348 521
11 535 530 861 692 581 504 383 315 268 371 351 630
12 601 616 656 645 582 461 409 304 251 337 403 634
13 536 656 724 700 608 527 508 545 248 280 423 617
14 572 556 844 670 589 474 482 406 244 282 346 699
15 524 598 778 710 527 420 432 283 410 308 342 574
16 497 632 669 962 612 391 368 247 444 297 401 676
17 502 594 629 818 644 443 340 250 553 309 423 680
18 564 559 637 649 534 460 343 279 367 295 356 733
19 645 570 684 652 595 483 314 323 361 469 330 579
20 846 585 770 649 539 529 324 284 313 410 378 466
21 677 593 851 597 498 627 419 270 279 367 384 685
22 546 658 1,140 618 496 435 361 327 428 315 370 556
23 497 702 826 618 521 408 430 267 377 280 459 572
24 624 809 831 592 571 400 395 233 446 317 379 577
25 951 997 749 624 471 402 332 221 351 327 440 688
26 934 824 654 629 513 403 330 213 359 323 477 605
27 710 602 744 667 488 501 342 242 411 393 521 596
28 728 580 772 601 441 622 411 540 484 479 557 598
29 638 606 855 611 517 458 305 322 585 445 523 540
30 551   766 617 585 373 296 286 400 519 562 493
31 553   817   447   290 237   355   475