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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 13120500 BIG LOST RIVER AT HOWELL RANCH NR CHILLY ID


Custer County, Idaho
Hydrologic Unit Code 17040218
Latitude  43°59'54", Longitude 114°01'16" NAD83
Drainage area 440  square miles
Gage datum 6,626.34 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 1903-10-01 -> 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 83 77 75 96 341 1,170 909 300 147 128 121 92
2 84 76 74 95 358 1,180 894 288 145 129 119 92
3 84 77 74 97 385 1,210 869 281 142 130 118 91
4 84 77 75 101 416 1,240 846 274 140 129 116 88
5 83 77 75 105 439 1,310 808 264 141 131 114 87
6 82 77 76 109 468 1,330 783 251 149 129 114 88
7 83 77 76 114 503 1,330 759 240 150 129 114 88
8 83 76 76 119 525 1,330 732 234 147 129 114 86
9 83 77 76 124 546 1,300 710 228 148 128 112 86
10 83 76 76 129 571 1,270 693 225 146 128 111 88
11 83 76 76 136 592 1,250 662 217 144 128 110 87
12 82 77 77 143 623 1,260 628 217 145 127 111 87
13 82 77 78 150 652 1,280 603 211 142 125 109 87
14 82 78 78 161 678 1,260 579 205 141 125 108 87
15 83 77 79 164 725 1,250 551 199 142 126 106 86
16 84 77 82 168 760 1,230 516 193 137 126 108 84
17 84 77 83 179 807 1,200 493 188 136 125 106 84
18 83 77 83 188 836 1,180 472 184 138 122 104 84
19 83 76 83 198 872 1,170 451 183 136 122 103 84
20 82 76 85 212 904 1,150 437 186 137 122 103 85
21 82 75 86 226 925 1,150 420 188 136 121 99 84
22 80 76 87 245 936 1,150 408 185 134 120 97 84
23 81 76 89 259 963 1,110 394 181 132 119 97 90
24 80 76 88 268 1,020 1,070 386 178 130 119 97 87
25 81 76 90 271 1,060 1,060 376 171 128 119 97 86
26 80 76 92 283 1,090 1,050 362 167 128 120 95 85
27 80 75 92 293 1,110 1,030 344 162 127 118 95 84
28 79 75 90 298 1,130 992 336 157 126 118 94 84
29 79 79 91 307 1,150 955 334 154 128 119 93 84
30 78   93 319 1,160 928 320 151 128 118 92 84
31 78   98   1,160   305 150   123   83