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USGS Daily Statistics for Montana

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Questions or concerns about USGS data and data products in Montana and Wyoming can be directed to the Wyoming-Montana Water Science Center Data Management Section.


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 06019500 Ruby River above reservoir near Alder, MT


Madison County, Montana
Hydrologic Unit Code 10020003
Latitude  45°11'32.35", Longitude 112°08'34.14" NAD83
Drainage area 534  square miles
Gage datum 5,400 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 1937-10-01 -> 2021-09-30)

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
1 104 102 103 121 241 546 292 136 112 121 126 116
2 104 101 102 124 248 551 280 134 111 121 125 116
3 104 102 100 124 262 548 270 133 110 123 125 115
4 103 101 101 127 279 557 262 133 109 123 127 115
5 102 102 101 130 285 559 254 132 109 124 126 113
6 103 102 102 135 295 570 242 129 110 123 125 112
7 103 102 103 138 313 560 234 126 111 123 126 112
8 104 101 105 139 322 555 227 125 111 124 125 112
9 104 101 105 141 337 533 220 126 111 123 125 110
10 103 103 105 143 345 530 218 124 112 123 124 110
11 103 104 106 143 351 514 211 122 114 123 124 111
12 104 106 107 144 354 498 202 121 115 124 124 111
13 104 104 107 145 374 493 193 120 114 123 124 111
14 104 104 107 150 386 486 189 118 114 123 123 110
15 104 102 106 152 409 478 184 117 114 124 122 110
16 103 102 107 153 441 478 178 116 114 125 122 109
17 103 101 110 160 457 473 172 114 115 125 121 109
18 103 101 112 163 459 446 171 113 116 124 122 108
19 104 101 112 165 466 434 165 113 117 124 121 108
20 103 102 112 170 486 422 159 113 119 124 120 109
21 102 102 114 178 510 408 156 114 121 125 119 109
22 102 101 116 187 511 401 155 114 121 125 118 109
23 102 101 119 195 508 386 154 113 120 125 117 108
24 102 102 120 202 518 381 151 114 120 126 119 108
25 102 101 121 209 521 380 148 114 119 126 118 108
26 102 100 120 205 528 361 147 114 118 126 117 108
27 102 100 121 210 539 348 144 110 118 126 117 108
28 101 102 119 217 547 335 143 109 119 126 116 107
29 101 106 116 228 560 319 142 110 118 126 116 107
30 103   116 237 558 306 141 110 119 125 116 107
31 103   118   550   139 112   127   106