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USGS Daily Statistics for the Nation

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 -> 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 80 85 90 246 1,070 2,000 745 195 84 91 129 110
2 81 87 91 263 1,140 1,900 699 184 81 101 126 108
3 80 85 90 283 1,240 1,880 666 176 78 102 122 105
4 79 84 91 297 1,320 1,890 651 177 78 103 119 104
5 79 84 92 304 1,480 1,920 606 170 76 104 120 105
6 81 84 93 310 1,560 1,850 575 164 80 102 123 104
7 82 86 93 336 1,590 1,760 556 158 84 102 136 103
8 84 87 95 370 1,620 1,690 537 152 81 103 135 100
9 83 87 96 411 1,680 1,610 514 145 78 103 128 99
10 83 85 98 429 1,700 1,540 492 141 76 103 124 100
11 82 88 101 442 1,730 1,500 472 140 74 105 120 102
12 79 89 108 451 1,820 1,500 449 134 72 104 123 102
13 78 89 115 451 1,850 1,490 431 128 70 102 132 100
14 79 89 121 452 1,950 1,450 403 129 72 103 130 97
15 78 89 130 444 2,090 1,400 377 128 74 104 131 94
16 79 89 134 450 2,230 1,360 358 124 75 108 134 93
17 81 91 135 466 2,410 1,300 340 119 75 111 129 91
18 82 92 138 501 2,370 1,250 333 120 79 116 127 92
19 83 90 145 553 2,280 1,190 326 113 82 114 127 91
20 84 90 151 613 2,190 1,100 318 108 81 116 122 91
21 83 90 157 702 2,100 1,080 313 105 78 146 117 89
22 81 89 162 768 2,080 1,060 297 107 77 130 113 89
23 82 87 170 780 2,040 1,020 285 104 75 126 113 88
24 85 88 176 839 1,990 1,000 280 103 75 122 113 87
25 82 89 180 864 2,000 974 261 102 74 121 111 86
26 81 89 184 894 2,030 906 254 99 76 120 110 85
27 81 89 191 921 2,050 887 241 95 76 119 109 85
28 81 90 200 945 2,030 840 225 91 76 118 107 85
29 81 98 206 983 2,020 814 221 87 82 119 106 85
30 81   216 1,020 2,000 780 211 88 83 117 111 82
31 83   234   2,000   200 87   124   81