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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 -> 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
1 597 591 910 922 614 498 304 279 358 456 319 580
2 565 666 779 836 660 465 333 259 271 513 347 508
3 624 730 759 797 680 461 367 258 249 336 362 478
4 685 878 922 790 655 448 477 354 259 328 519 586
5 524 741 915 931 691 522 392 330 281 306 438 531
6 518 755 889 797 710 454 350 305 557 272 346 429
7 537 828 895 818 707 434 347 274 420 275 360 493
8 614 717 765 837 665 442 330 273 398 359 354 522
9 618 680 720 886 607 520 296 303 267 371 333 499
10 605 656 737 962 563 489 337 288 279 315 388 472
11 547 739 718 841 557 476 321 314 257 401 375 492
12 590 692 734 762 541 451 344 324 245 359 617 476
13 519 802 819 906 535 451 327 290 239 318 454 471
14 539 913 869 941 513 434 330 406 231 276 371 489
15 634 759 813 826 568 445 316 437 213 319 345 506
16 589 736 743 1,010 598 447 319 550 316 302 429 519
17 508 787 905 864 556 576 330 459 385 431 365 469
18 535 819 957 780 602 540 276 489 485 367 359 482
19 747 827 928 708 625 448 273 399 402 495 410 433
20 715 768 914 815 653 449 262 310 372 401 388 416
21 642 780 1,040 730 743 603 270 286 288 345 327 451
22 654 900 923 766 719 513 286 292 430 389 317 496
23 774 1,000 875 646 570 403 309 292 398 379 332 489
24 646 945 1,010 789 593 369 292 289 272 363 354 488
25 758 905 910 904 576 320 254 290 247 342 382 523
26 790 834 915 888 503 358 263 302 273 347 382 571
27 668 750 893 829 516 441 294 272 381 359 365 513
28 696 758 978 763 705 377 277 274 530 353 383 544
29 653 693 929 681 618 405 287 277 439 347 551 624
30 624   923 644 638 351 301 258 573 314 449 616
31 696   879   623   271 354   318   580