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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 -> 2024-09-30)

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
1 597 591 910 922 618 501 306 280 358 439 320 584
2 565 666 779 836 664 468 335 260 271 504 349 511
3 624 730 759 797 684 464 369 259 250 329 364 481
4 685 878 922 790 659 450 478 356 260 324 523 590
5 524 741 915 931 695 525 393 331 282 303 440 535
6 518 755 889 797 713 456 351 307 561 270 347 432
7 537 828 895 818 709 436 349 276 423 273 362 496
8 614 717 765 837 668 444 332 263 401 359 356 525
9 618 680 720 886 610 523 297 284 268 371 335 499
10 605 656 737 962 566 492 339 284 281 315 390 472
11 547 739 718 841 560 479 323 313 258 402 377 492
12 590 692 734 762 544 453 346 325 246 360 621 476
13 519 802 819 906 538 454 329 291 241 319 457 471
14 539 913 869 941 516 436 332 407 232 276 372 489
15 634 759 813 826 570 448 318 439 214 320 345 506
16 589 736 743 1,010 599 449 321 553 318 303 431 519
17 508 787 905 868 557 580 332 460 385 433 366 469
18 535 819 957 784 601 543 277 492 483 369 360 482
19 747 827 928 710 622 451 274 401 397 498 413 433
20 715 768 914 819 653 452 262 312 372 403 390 416
21 642 780 1,040 733 746 608 271 287 288 347 329 451
22 654 900 923 770 723 516 287 293 432 391 319 496
23 774 1,000 875 649 572 405 308 293 400 381 333 489
24 646 945 1,010 794 595 372 291 290 270 365 355 488
25 758 905 910 910 579 322 254 292 242 343 384 523
26 790 834 915 895 504 360 263 304 260 348 384 571
27 668 750 893 834 517 444 295 273 297 361 367 513
28 696 758 978 768 709 379 278 275 479 355 385 544
29 653 693 929 685 622 407 288 278 426 349 555 624
30 624   923 648 642 353 303 259 564 315 452 616
31 696   879   627   272 355   319   580