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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 -> 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
1 779 1,020 1,150 1,090 669 398 265 359 359 451 310 498
2 794 1,010 1,160 1,080 679 395 255 384 390 459 326 501
3 811 1,010 1,170 1,060 684 402 268 390 391 447 333 499
4 842 1,030 1,180 1,040 670 422 275 404 382 422 339 499
5 861 1,080 1,190 1,010 657 457 272 426 371 396 336 502
6 863 1,110 1,190 991 656 495 259 435 377 380 327 511
7 860 1,140 1,220 979 667 520 248 439 400 381 319 511
8 863 1,150 1,240 977 661 540 246 423 394 480 329 511
9 864 1,160 1,260 986 646 542 246 408 393 646 339 525
10 868 1,150 1,270 989 619 549 251 406 412 687 360 555
11 876 1,130 1,270 969 597 535 258 387 429 655 374 594
12 878 1,120 1,230 950 581 518 257 358 479 581 398 637
13 879 1,130 1,190 930 550 504 275 341 520 499 486 667
14 902 1,160 1,160 909 517 470 306 333 525 431 540 688
15 927 1,180 1,160 890 491 427 340 362 505 374 556 717
16 950 1,180 1,140 909 478 398 367 415 590 326 545 754
17 969 1,200 1,120 921 462 383 403 453 630 288 526 776
18 976 1,220 1,130 903 443 350 399 483 646 285 499 782
19 989 1,240 1,130 870 433 321 394 491 677 282 473 786
20 1,020 1,240 1,160 832 424 293 380 459 680 276 456 785
21 1,040 1,220 1,170 796 423 275 367 418 637 278 444 779
22 1,060 1,190 1,170 766 424 264 352 381 591 285 445 767
23 1,070 1,180 1,150 749 426 267 332 367 536 290 456 762
24 1,070 1,170 1,130 728 431 272 313 366 496 313 464 760
25 1,080 1,170 1,110 702 443 269 315 356 466 321 466 769
26 1,100 1,160 1,100 687 447 271 323 332 436 314 471 775
27 1,090 1,160 1,080 683 442 268 330 314 425 306 477 785
28 1,080 1,160 1,080 684 429 263 346 328 435 296 480 785
29 1,070 1,140 1,090 679 415 281 371 369 432 294 479 772
30 1,060   1,110 666 409 281 367 385 433 297 487 769
31 1,040   1,100   409   359 366   298   768