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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 -> 2021-09-30)

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
1 601 587 894 930 615 498 307 282 358 424 324 591
2 559 668 764 842 667 466 332 262 270 505 347 517
3 618 733 750 800 690 464 370 260 250 329 365 485
4 684 869 912 796 663 452 485 361 261 324 532 598
5 522 732 915 946 702 530 397 335 277 303 447 514
6 516 756 893 800 722 460 354 303 566 269 349 418
7 537 837 901 819 717 440 351 273 427 274 365 487
8 619 722 769 840 675 446 333 262 401 363 360 521
9 604 686 718 895 617 527 294 285 269 375 338 496
10 573 662 732 976 572 496 338 284 278 318 397 463
11 538 747 717 833 567 481 321 314 255 408 332 484
12 589 679 735 755 550 451 348 328 243 365 447 473
13 513 737 825 912 544 454 331 293 240 322 393 472
14 536 884 880 953 520 434 326 414 232 278 348 482
15 639 737 823 834 576 449 314 439 214 324 328 487
16 593 705 752 1,030 606 453 317 553 321 306 415 500
17 509 763 921 879 562 587 332 467 391 440 357 451
18 538 798 976 789 609 551 275 497 491 375 355 470
19 761 813 943 713 632 456 272 402 404 507 412 424
20 727 756 930 827 664 447 260 312 377 410 390 410
21 652 776 1,070 741 760 613 270 286 289 352 323 449
22 666 904 943 779 736 510 287 294 411 398 313 489
23 791 1,010 887 655 577 395 306 295 394 387 331 477
24 658 947 1,020 805 560 365 292 292 267 371 356 482
25 770 893 923 924 568 318 254 293 241 348 387 517
26 752 830 928 910 500 360 263 304 260 353 387 569
27 647 745 905 848 491 446 296 274 300 366 370 497
28 665 739 988 748 681 381 279 273 488 360 389 533
29 635 700 933 669 595 411 289 279 433 349 567 627
30 616   934 642 622 356 305 258 575 316 452 621
31 696   889   622   273 359   322   585