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USGS Daily Statistics for Washington

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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 12448000 CHEWUCH RIVER AT WINTHROP, WA


Okanogan County, Washington
Hydrologic Unit Code 17020008
Latitude  48°28'38", Longitude 120°11'07" NAD27
Drainage area 525  square miles
Gage datum 1,736.26 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 1991-10-01 -> 2023-09-30)

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 81 81 89 247 1,050 2,070 769 202 84 93 131 111
2 81 81 90 263 1,110 1,970 723 191 82 102 128 110
3 80 81 90 279 1,180 1,940 690 183 80 103 123 107
4 80 81 91 294 1,260 1,960 676 184 79 104 120 105
5 79 81 92 302 1,390 1,990 629 177 77 105 120 106
6 82 82 93 309 1,470 1,920 595 171 82 104 123 104
7 83 84 94 337 1,540 1,820 575 164 86 103 138 103
8 85 85 95 375 1,600 1,760 556 157 83 105 137 100
9 84 86 96 418 1,670 1,660 532 151 80 105 130 100
10 84 84 99 437 1,690 1,590 509 146 78 105 126 100
11 82 87 102 450 1,710 1,550 489 144 75 106 122 103
12 79 87 110 460 1,790 1,550 465 138 73 105 125 103
13 79 88 117 458 1,800 1,540 446 133 72 105 135 100
14 79 88 123 456 1,900 1,510 417 134 73 106 132 97
15 78 88 133 443 2,040 1,450 391 132 75 106 134 95
16 80 89 136 450 2,180 1,410 370 129 77 109 137 94
17 82 90 136 467 2,380 1,350 353 122 77 112 132 92
18 83 91 137 507 2,360 1,300 345 124 81 118 130 92
19 84 89 142 563 2,270 1,230 339 116 84 116 130 92
20 85 89 146 628 2,200 1,140 330 111 83 117 125 92
21 84 89 150 723 2,110 1,120 326 108 80 150 119 90
22 81 88 155 794 2,100 1,100 309 110 79 133 114 90
23 82 87 163 806 2,070 1,060 297 106 77 128 114 89
24 85 88 168 868 2,030 1,040 292 103 76 125 115 88
25 83 88 174 892 2,040 1,010 272 101 76 123 113 87
26 82 88 179 920 2,080 936 264 100 76 122 112 86
27 81 89 186 942 2,110 915 251 96 77 121 110 86
28 82 89 197 963 2,080 867 234 92 77 120 109 86
29 81 92 204 995 2,080 842 229 89 83 121 108 86
30 82   214 1,020 2,060 807 219 88 84 119 113 82
31 82   234   2,070   207 88   126   81