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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 1,030 1,160 1,100 675 397 268 357 359 451 310 498
2 794 1,020 1,160 1,090 686 394 257 381 390 459 326 501
3 811 1,020 1,170 1,070 691 402 271 388 391 447 333 499
4 842 1,040 1,190 1,050 677 422 278 403 382 422 339 499
5 861 1,080 1,200 1,020 664 459 274 424 371 396 336 502
6 863 1,120 1,200 999 663 497 262 433 377 380 327 511
7 860 1,140 1,230 986 674 522 251 438 400 381 319 511
8 863 1,160 1,250 981 668 542 249 423 394 480 329 511
9 864 1,160 1,270 988 653 543 249 409 393 646 339 525
10 868 1,150 1,270 989 626 550 253 408 412 687 360 555
11 876 1,130 1,270 967 603 535 258 389 429 655 374 594
12 878 1,120 1,240 944 586 518 256 360 479 581 398 637
13 879 1,130 1,200 920 555 505 274 342 520 499 486 667
14 902 1,150 1,170 894 521 471 305 335 525 431 540 688
15 934 1,160 1,170 872 494 425 339 364 505 374 556 717
16 959 1,160 1,140 893 479 393 360 418 590 326 545 754
17 977 1,180 1,120 907 456 375 389 453 630 288 526 776
18 985 1,200 1,120 892 431 341 380 483 646 285 499 782
19 998 1,220 1,120 862 421 313 367 493 677 282 473 786
20 1,030 1,220 1,130 827 413 287 348 459 680 276 456 785
21 1,050 1,200 1,140 794 414 272 334 418 637 278 444 779
22 1,070 1,180 1,140 766 416 262 322 381 591 285 445 767
23 1,080 1,170 1,130 751 417 267 306 367 536 290 456 762
24 1,090 1,160 1,110 731 422 272 292 366 496 313 464 760
25 1,100 1,170 1,100 706 433 269 299 356 466 321 466 769
26 1,110 1,160 1,090 690 439 272 311 332 436 314 471 775
27 1,100 1,160 1,080 688 436 270 321 314 425 306 477 785
28 1,090 1,160 1,080 689 426 265 338 328 435 296 480 785
29 1,080 1,140 1,090 685 413 283 364 369 432 294 479 772
30 1,070   1,110 672 408 284 363 385 433 297 487 769
31 1,050   1,110   409   356 366   298   768