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USGS Surface-Water Daily Statistics for Oregon

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 14308000 SOUTH UMPQUA RIVER AT TILLER, OR


Douglas County, Oregon
Hydrologic Unit Code 17100302
Latitude  42°55'50", Longitude 122°56'50" NAD27
Drainage area 449  square miles
Gage datum 991.8 feet above NGVD29
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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 1910-10-01 -> 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 1,930 1,880 1,610 1,890 1,180 826 249 88 61 83 331 1,900
2 1,730 1,800 1,830 1,740 1,190 779 239 86 63 81 365 2,080
3 1,550 1,860 1,700 1,630 1,210 770 225 84 64 84 358 2,030
4 1,570 1,810 1,590 1,520 1,250 755 209 85 59 83 406 1,850
5 1,650 1,830 1,680 1,570 1,270 735 199 82 59 88 413 1,890
6 1,830 1,850 1,720 1,560 1,290 717 192 80 60 85 480 2,060
7 1,850 1,910 1,700 1,540 1,300 782 183 80 60 86 431 1,900
8 1,980 1,860 1,610 1,720 1,270 741 176 79 60 87 631 1,850
9 1,940 1,770 1,740 1,660 1,230 665 171 76 62 102 594 1,910
10 2,190 1,630 1,840 1,580 1,220 616 167 75 67 146 496 1,970
11 2,230 1,580 1,690 1,600 1,170 565 158 75 66 138 542 2,010
12 2,060 1,640 1,630 1,500 1,100 545 152 72 61 138 739 1,980
13 2,220 2,000 1,670 1,500 1,060 521 146 70 59 126 738 2,180
14 2,340 2,050 1,750 1,480 1,020 490 140 69 60 123 765 2,200
15 2,500 2,020 1,760 1,410 1,030 475 134 71 63 136 898 2,040
16 2,550 2,130 1,880 1,390 1,070 448 130 73 70 170 855 1,710
17 2,840 2,120 1,830 1,440 1,070 433 128 72 70 134 817 1,710
18 2,960 2,230 1,770 1,460 1,100 413 126 71 77 139 1,070 1,600
19 2,540 2,180 1,800 1,420 1,090 408 129 69 77 176 1,200 1,640
20 2,440 1,970 1,660 1,390 1,040 393 121 68 75 174 1,110 1,660
21 2,330 2,050 1,680 1,390 997 365 115 67 70 185 1,080 2,320
22 2,400 2,160 1,720 1,360 957 340 119 66 64 202 1,420 2,370
23 2,230 2,070 1,780 1,370 910 324 119 68 62 268 1,570 1,920
24 2,030 1,780 1,870 1,440 872 310 109 68 69 234 1,730 1,720
25 1,950 1,720 1,790 1,360 895 308 104 70 86 243 1,380 1,700
26 2,040 1,670 1,840 1,310 907 307 103 69 102 268 1,460 1,820
27 2,050 1,640 1,720 1,290 868 297 107 66 96 256 1,430 1,930
28 2,070 1,740 1,670 1,300 844 285 112 62 98 368 1,550 2,380
29 2,060 1,930 1,660 1,240 845 277 98 62 101 534 1,580 2,180
30 1,870   1,940 1,190 804 261 94 66 110 422 1,550 2,220
31 1,750   1,940   796   91 64   355   2,220