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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 02056000 ROANOKE RIVER AT NIAGARA, VA


Roanoke County, Virginia
Hydrologic Unit Code 03010101
Latitude  37°15'18", Longitude  79°52'18" NAD27
Drainage area 509  square miles
Gage datum 819.7 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 1926-10-01 -> 2022-09-30)

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
1 600 589 920 937 613 496 307 281 362 422 323 591
2 568 666 784 847 664 465 334 261 273 502 352 516
3 630 732 763 803 688 463 371 260 251 328 367 484
4 692 885 920 798 663 450 483 359 261 324 530 595
5 528 746 920 945 701 527 396 333 277 303 446 538
6 520 761 896 801 720 458 352 301 562 270 349 433
7 539 836 902 819 714 438 350 272 424 274 365 494
8 618 723 771 838 673 445 333 261 399 362 360 524
9 603 686 719 893 615 527 294 284 268 374 338 497
10 572 664 733 974 571 496 337 283 277 317 395 464
11 538 748 717 850 565 482 323 314 254 407 357 483
12 587 687 735 764 549 457 348 327 242 363 610 472
13 512 749 824 915 542 457 331 292 239 321 454 471
14 534 899 878 954 518 440 326 411 231 278 371 490
15 634 753 822 835 573 451 313 439 213 323 343 500
16 589 736 751 1,030 603 453 316 559 320 305 423 509
17 507 784 918 877 560 585 331 465 388 438 363 461
18 535 816 973 788 606 549 275 497 488 373 359 478
19 753 830 944 713 629 455 271 404 401 504 413 430
20 720 772 930 826 661 446 259 314 375 407 391 415
21 647 787 1,060 740 756 609 269 287 290 350 325 452
22 660 912 940 777 732 509 286 294 438 396 315 490
23 782 1,020 885 654 575 394 305 295 403 385 333 477
24 652 953 1,020 803 557 364 291 292 271 369 356 482
25 763 898 921 922 565 317 254 292 243 347 387 521
26 794 835 928 906 499 359 263 303 261 352 386 569
27 670 753 906 845 489 446 296 274 300 365 370 498
28 677 762 995 746 678 380 279 272 485 359 388 532
29 641 700 946 668 593 410 288 278 432 353 562 624
30 619   941 640 621 355 304 259 572 318 456 618
31 696   895   620   272 358   322   583