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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 14207500 TUALATIN RIVER AT WEST LINN, OR


Clackamas County, Oregon
Hydrologic Unit Code 17090010
Latitude  45°21'03", Longitude 122°40'30" NAD27
Drainage area 706  square miles
Gage datum 85.61 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 1928-10-01 -> 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 3,940 3,620 3,260 2,360 1,010 446 210 104 118 176 464 2,190
2 3,950 3,600 3,190 2,300 978 435 202 103 118 178 504 2,270
3 3,880 3,600 3,110 2,260 958 425 194 101 120 175 523 2,370
4 3,820 3,540 3,030 2,210 941 423 190 101 123 173 546 2,480
5 3,710 3,480 2,960 2,150 928 418 186 100 122 168 576 2,540
6 3,720 3,570 2,910 2,080 925 413 183 99 128 169 611 2,610
7 3,740 3,580 2,850 2,000 911 411 176 100 128 173 639 2,670
8 3,700 3,620 2,790 1,950 885 411 169 102 125 176 654 2,680
9 3,670 3,710 2,770 1,900 853 406 166 103 125 181 679 2,670
10 3,680 3,720 2,770 1,850 824 400 162 102 128 198 708 2,700
11 3,710 3,620 2,730 1,810 791 397 160 99 132 223 747 2,720
12 3,730 3,540 2,730 1,780 756 376 154 101 129 230 800 2,780
13 3,800 3,500 2,780 1,770 724 357 150 102 126 229 855 2,850
14 3,870 3,430 2,810 1,750 703 346 146 101 126 225 890 2,870
15 3,910 3,390 2,860 1,710 696 335 143 101 134 228 947 2,880
16 3,890 3,430 2,900 1,680 682 323 138 101 138 224 1,050 2,980
17 3,960 3,470 2,900 1,620 673 311 137 103 142 227 1,100 3,050
18 4,140 3,500 2,880 1,570 659 300 138 103 151 233 1,160 3,070
19 4,180 3,550 2,840 1,520 649 289 136 102 162 237 1,270 3,130
20 4,190 3,570 2,770 1,460 632 279 133 104 164 255 1,380 3,270
21 4,160 3,540 2,670 1,400 616 275 128 108 159 270 1,410 3,450
22 4,130 3,510 2,610 1,350 608 270 124 111 152 291 1,480 3,620
23 4,110 3,480 2,540 1,300 601 258 119 116 148 309 1,570 3,740
24 4,060 3,470 2,490 1,270 583 246 115 115 145 327 1,680 3,750
25 4,000 3,420 2,460 1,230 564 242 113 115 146 327 1,800 3,720
26 3,920 3,350 2,410 1,190 538 237 112 117 147 330 1,890 3,650
27 3,890 3,330 2,370 1,150 523 231 110 118 149 342 1,980 3,750
28 3,860 3,310 2,350 1,120 511 225 109 117 152 351 2,060 3,740
29 3,790 3,390 2,380 1,090 500 220 105 117 159 368 2,110 3,810
30 3,690   2,400 1,060 483 217 106 119 172 390 2,140 3,900
31 3,630   2,390   462   106 120   421   3,950