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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 01481000 Brandywine Creek at Chadds Ford, PA


Delaware County, Pennsylvania
Hydrologic Unit Code 02040205
Latitude  39°52'11", Longitude  75°35'37" NAD27
Drainage area 287  square miles
Gage datum 149.7 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
1 519 484 567 723 758 427 358 302 271 409 315 498
2 511 509 672 770 534 444 351 258 593 295 278 449
3 508 601 574 803 536 423 333 247 261 293 358 440
4 513 606 560 711 536 460 332 365 237 255 280 400
5 454 567 653 702 516 424 350 306 209 276 320 475
6 432 529 582 632 556 440 325 237 370 261 319 466
7 446 533 579 591 546 441 342 257 359 220 290 450
8 489 456 578 596 522 423 335 281 331 292 338 492
9 501 425 673 600 521 454 301 331 319 379 350 496
10 542 430 728 686 506 437 327 356 252 324 314 459
11 468 473 743 606 522 449 342 273 238 350 320 610
12 521 530 582 579 519 398 333 280 222 304 367 592
13 466 565 657 640 537 457 449 529 223 252 379 556
14 512 486 770 589 529 424 459 337 220 256 310 620
15 460 539 699 646 467 375 391 257 392 290 301 509
16 449 574 587 869 551 346 335 227 388 272 357 602
17 438 538 561 722 561 392 316 240 457 280 387 623
18 495 501 569 580 475 422 311 254 348 269 319 651
19 567 499 611 576 536 431 285 297 339 415 299 510
20 699 512 697 577 473 475 289 255 286 347 352 425
21 602 525 756 526 442 557 377 248 254 333 346 652
22 465 580 968 548 437 385 314 308 381 288 357 484
23 447 628 738 554 463 368 385 229 356 257 427 510
24 588 713 742 532 498 364 348 212 413 292 331 510
25 804 841 657 553 415 356 295 202 321 304 391 630
26 819 673 584 553 458 366 286 194 328 289 414 555
27 639 519 685 599 432 453 308 221 375 382 441 538
28 630 525 684 539 397 575 376 514 444 443 518 545
29 551 561 729 534 460 397 265 277 487 413 460 472
30 492   672 549 505 330 265 250 355 480 507 430
31 501   725   393   247 223   321   426