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USGS Daily Statistics for the Nation

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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 02047783 BLACKWATER RIVER AT ROUTE 620 NEAR ZUNI, VA


Isle Of Wight County, Virginia
Hydrologic Unit Code 03010202
Latitude  36°54'23", Longitude  76°49'13" NAD27
Drainage area 420  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 2012-10-01 -> 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
1 644 620 686 736 534 329 359 281 214 323 130 288
2 605 630 653 694 623 304 398 279 219 359 136 291
3 623 619 617 660 603 289 396 292 201 334 151 283
4 701 634 610 605 538 288 392 360 167 310 166 266
5 722 691 656 538 452 311 378 419 140 299 170 257
6 702 713 751 478 401 391 378 363 130 287 166 256
7 658 726 814 443 393 429 384 317 121 264 160 259
8 602 790 843 462 392 483 352 293 109 236 154 267
9 557 779 818 495 379 696 342 334 201 440 148 279
10 542 731 772 504 348 961 301 359 378 622 159 318
11 555 684 716 489 305 1,020 285 330 327 532 184 380
12 598 758 655 498 268 969 325 313 282 424 258 406
13 657 858 621 524 246 798 396 300 296 376 445 400
14 721 933 607 518 237 621 465 281 288 363 494 397
15 755 935 611 497 260 474 454 286 249 333 476 447
16 721 947 608 529 317 387 421 366 200 303 450 512
17 685 1,010 622 558 336 375 461 693 163 282 425 579
18 665 1,040 678 525 335 372 431 598 275 263 415 651
19 646 1,080 798 498 329 353 395 430 569 274 399 702
20 637 1,090 806 489 344 328 363 361 682 275 368 700
21 607 1,050 752 495 411 301 317 374 439 257 328 677
22 559 976 690 465 442 285 272 449 312 239 290 649
23 536 904 640 426 437 283 240 424 265 229 257 641
24 559 874 626 385 423 284 238 356 243 218 235 629
25 647 835 685 352 403 301 279 296 227 193 242 666
26 682 781 704 339 375 306 308 243 225 166 254 716
27 678 729 716 331 341 365 289 203 210 145 282 725
28 654 703 758 327 333 386 272 182 239 130 305 681
29 628 867 858 333 353 371 247 180 257 119 301 657
30 624   848 344 350 338 223 192 270 118 286 680
31 614   797   340   253 210   124   684