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USGS Daily Statistics for New York

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 01502500 UNADILLA RIVER AT ROCKDALE NY


Chenango County, New York
Hydrologic Unit Code 02050101
Latitude  42°22'40", Longitude  75°24'22" NAD83
Drainage area 520  square miles
Contributing drainage area 520  square miles
Gage datum 991.95 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 1929-10-01 -> 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 1,170 846 1,010 2,660 1,250 665 620 342 305 370 658 971
2 1,160 894 1,010 2,630 1,220 728 591 320 400 413 655 991
3 1,080 917 1,030 2,670 1,150 730 545 268 341 412 708 957
4 1,040 890 1,100 2,760 1,150 708 474 270 262 376 670 1,020
5 968 817 1,340 2,880 1,120 620 400 297 232 372 638 1,040
6 947 805 1,670 2,760 1,070 656 392 250 226 399 696 1,020
7 976 855 1,640 2,700 1,080 668 373 233 285 456 747 1,050
8 902 839 1,610 2,590 1,050 613 405 229 418 441 726 1,020
9 867 780 1,600 2,350 1,070 572 412 255 372 426 747 1,010
10 876 766 1,500 2,260 1,040 560 368 269 308 424 787 1,040
11 870 857 1,480 2,240 1,050 553 327 266 275 364 815 1,170
12 876 904 1,680 2,140 1,010 541 325 249 263 340 754 1,190
13 931 855 1,710 2,070 1,010 548 341 238 255 340 725 1,190
14 973 883 1,700 2,010 1,020 612 322 239 235 346 749 1,130
15 948 929 1,760 1,880 959 609 309 233 239 408 762 1,090
16 893 1,030 1,800 1,890 948 586 291 214 252 502 801 1,010
17 801 1,040 1,960 1,970 1,020 558 280 239 253 598 959 944
18 808 998 2,000 1,800 967 558 313 272 323 643 914 1,010
19 814 949 1,780 1,640 908 485 289 281 349 610 856 1,060
20 790 1,020 1,830 1,610 889 452 280 257 336 581 894 967
21 795 1,140 1,880 1,570 925 461 306 246 348 631 921 992
22 866 1,200 1,980 1,510 932 547 337 246 381 557 864 1,040
23 926 1,180 1,980 1,500 894 565 428 240 358 523 880 1,000
24 942 1,180 1,900 1,460 838 512 375 229 373 586 884 1,040
25 1,060 1,260 1,970 1,450 768 481 324 207 368 605 886 1,120
26 1,110 1,270 2,070 1,410 766 471 278 186 363 654 917 1,090
27 1,100 1,160 2,280 1,360 750 475 271 194 414 731 1,010 1,050
28 1,020 1,100 2,240 1,330 727 670 304 225 498 807 1,050 1,080
29 873 829 2,210 1,290 705 728 322 313 426 790 1,070 1,130
30 823   2,310 1,210 725 669 316 361 356 711 1,020 1,240
31 845   2,520   645   309 296   646   1,280