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USGS Daily Statistics for Virginia

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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 02049500 BLACKWATER RIVER NEAR FRANKLIN, VA


Southampton County, Virginia
Hydrologic Unit Code 03010202
Latitude  36°45'45", Longitude  76°53'55" NAD27
Drainage area 613  square miles
Gage datum 0.00 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 1943-10-01 -> 2021-09-30)

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
1 797 1,050 1,180 1,070 684 403 269 356 367 449 324 517
2 813 1,040 1,180 1,070 691 402 260 376 400 459 341 519
3 829 1,040 1,190 1,060 696 412 275 379 401 447 348 518
4 851 1,060 1,210 1,050 683 433 283 395 392 421 355 517
5 868 1,110 1,210 1,030 671 465 280 418 383 396 352 519
6 868 1,150 1,210 1,010 672 502 267 431 391 382 342 529
7 866 1,170 1,230 999 685 533 257 440 417 384 333 530
8 871 1,180 1,250 997 681 559 256 426 411 492 344 530
9 876 1,180 1,260 1,010 669 563 255 412 411 667 354 545
10 878 1,170 1,270 1,010 643 572 256 412 429 711 377 577
11 883 1,140 1,270 987 620 558 257 391 447 677 392 618
12 882 1,130 1,240 964 605 533 255 360 500 601 416 660
13 880 1,140 1,200 942 573 500 273 342 544 516 509 689
14 901 1,150 1,170 916 538 454 304 335 550 446 566 711
15 924 1,160 1,170 892 508 410 339 362 529 388 582 741
16 948 1,150 1,150 912 488 385 360 417 618 338 570 776
17 965 1,160 1,140 929 460 373 392 456 660 299 550 797
18 973 1,180 1,130 916 433 343 384 490 678 297 521 798
19 989 1,190 1,140 886 423 319 371 500 710 294 493 794
20 1,020 1,190 1,150 850 417 295 352 467 713 289 475 788
21 1,050 1,170 1,160 816 419 280 338 425 665 290 462 779
22 1,080 1,160 1,160 787 420 270 327 388 613 298 464 767
23 1,090 1,150 1,150 769 421 275 312 373 555 304 474 762
24 1,100 1,160 1,130 747 426 280 297 366 510 328 482 761
25 1,110 1,170 1,110 721 440 277 298 355 479 336 484 772
26 1,120 1,170 1,090 707 448 279 304 332 448 329 488 781
27 1,120 1,170 1,070 707 445 274 312 316 436 321 495 795
28 1,100 1,170 1,060 708 429 268 332 332 441 311 498 798
29 1,100 1,170 1,060 702 413 285 361 377 433 308 497 786
30 1,090   1,070 687 410 285 362 393 430 311 505 785
31 1,070   1,070   412   358 373   313   786