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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 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 1,090 669 398 268 357 359 451 310 498
2 794 1,010 1,160 1,080 679 395 257 381 390 459 326 501
3 811 1,010 1,170 1,060 684 402 271 388 391 447 333 499
4 842 1,030 1,180 1,040 670 422 278 403 382 422 339 499
5 861 1,080 1,190 1,010 657 457 274 424 371 396 336 502
6 863 1,110 1,190 991 656 495 262 433 377 380 327 511
7 860 1,140 1,220 979 667 520 251 438 400 381 319 511
8 863 1,150 1,240 977 661 540 249 423 394 480 329 511
9 864 1,160 1,260 986 646 542 249 409 393 646 339 525
10 868 1,150 1,270 989 619 549 253 408 412 687 360 555
11 876 1,130 1,270 969 597 535 258 389 429 655 374 594
12 878 1,120 1,230 950 581 518 256 360 479 581 398 637
13 879 1,130 1,190 930 550 505 274 342 520 499 486 667
14 902 1,160 1,160 909 517 471 305 335 525 431 540 688
15 927 1,180 1,160 890 491 425 339 364 505 374 556 717
16 950 1,180 1,140 909 478 393 360 418 590 326 545 754
17 969 1,200 1,120 921 462 375 389 453 630 288 526 776
18 976 1,220 1,130 903 443 341 380 483 646 285 499 782
19 989 1,240 1,130 870 433 313 367 493 677 282 473 786
20 1,020 1,240 1,160 832 424 287 348 459 680 276 456 785
21 1,040 1,220 1,170 796 423 272 334 418 637 278 444 779
22 1,060 1,190 1,170 766 424 262 322 381 591 285 445 767
23 1,070 1,180 1,150 749 426 267 306 367 536 290 456 762
24 1,070 1,170 1,130 728 431 272 292 366 496 313 464 760
25 1,080 1,170 1,110 702 443 269 299 356 466 321 466 769
26 1,100 1,160 1,100 687 447 272 311 332 436 314 471 775
27 1,090 1,160 1,080 683 442 270 321 314 425 306 477 785
28 1,080 1,160 1,080 684 429 265 338 328 435 296 480 785
29 1,070 1,140 1,090 679 415 283 364 369 432 294 479 772
30 1,060   1,110 666 409 284 363 385 433 297 487 769
31 1,040   1,100   409   356 366   298   768