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USGS Daily Statistics for Kentucky

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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 03406500 ROCKCASTLE RIVER AT BILLOWS, KY


Laurel County, Kentucky
Hydrologic Unit Code 05130102
Latitude  37°10'16", Longitude  84°17'46" NAD27
Drainage area 604  square miles
Gage datum 802.68 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 1935-10-01 -> 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 1,900 1,710 2,430 1,870 1,260 539 372 387 208 212 317 1,100
2 1,930 1,680 1,920 1,570 1,290 690 354 389 188 424 278 913
3 1,660 1,860 1,810 1,530 1,550 561 336 358 213 274 296 889
4 1,720 2,040 2,040 1,990 1,450 599 440 370 262 152 330 1,090
5 1,800 1,870 2,320 2,210 1,230 540 477 354 183 130 342 1,120
6 1,570 1,830 2,700 1,600 1,360 514 518 402 132 121 450 965
7 1,620 1,880 2,300 1,660 1,970 757 655 368 109 104 485 1,040
8 1,700 1,480 1,830 1,650 1,920 626 537 236 85 117 347 1,360
9 1,660 1,490 1,930 1,510 1,540 426 663 250 73 128 318 1,860
10 1,820 1,730 1,870 1,400 1,040 468 411 216 92 152 389 1,780
11 1,760 1,910 1,760 1,490 876 511 384 262 127 196 462 1,260
12 1,620 1,760 2,050 1,820 808 432 321 242 99 163 385 958
13 1,340 2,090 2,480 1,980 865 453 325 255 110 126 364 1,110
14 1,400 2,360 2,150 1,600 997 400 468 303 205 135 321 1,340
15 1,490 2,360 1,940 1,730 973 415 531 232 140 235 374 1,250
16 1,480 2,510 1,670 1,830 1,100 493 488 167 157 208 440 1,220
17 1,120 2,600 1,930 1,450 837 532 389 186 141 507 486 1,400
18 1,260 2,660 2,010 1,370 753 392 292 165 160 696 483 1,300
19 1,190 2,000 2,040 1,210 1,100 404 392 200 167 247 745 1,210
20 1,710 1,670 2,060 1,450 1,230 491 375 158 113 239 870 930
21 2,000 1,900 2,180 1,150 852 459 414 164 114 190 691 1,160
22 1,810 2,230 2,150 1,080 656 461 259 161 225 166 521 1,330
23 2,140 2,210 1,970 1,110 781 603 248 139 236 180 650 1,650
24 2,020 2,010 1,510 985 665 620 254 145 354 188 607 1,550
25 1,860 2,020 1,560 1,100 703 394 208 177 283 151 563 1,350
26 1,830 1,910 1,470 1,170 622 432 225 136 316 152 505 1,320
27 1,390 2,010 1,540 1,160 656 437 300 129 330 196 684 1,290
28 1,620 2,310 1,630 1,580 726 688 283 169 328 263 1,010 1,310
29 1,720 1,870 1,730 1,630 649 748 340 179 248 276 1,050 1,570
30 1,770   1,990 1,330 572 406 397 188 195 280 789 1,970
31 1,660   1,760   628   372 177   276   1,960