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USGS Daily Statistics for Montana

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Questions or concerns about USGS streamflow data in Montana and Wyoming can be directed to Kirk Miller (kmiller@usgs.gov; 307-775-9168).

Updated June 11, 2020 - USGS water-resources monitoring activities will be restored at the following sites:
  • 12323600 Silver Bow Creek at Opportunity, Montana (POR: 31 years)
  • 12323750 Silver Bow Creek at Warm Springs, Montana (POR: 35 years)

Updated May 12, 2020 - USGS water-resources monitoring activities were suspended effective June 1, 2020 at the following site:
  • 06088500 Muddy Creek near Vaughn, Montana (POR: 82 years)
USGS monitoring activities at this site was funded by our partner and USGS Cooperative Matching Funds (06088500). Lack of partner funding for this site resulted in suspension of all USGS monitoring activities. Efforts are ongoing to secure funding for future monitoring. Historical data will continue to be available from USGS.

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 -> 2020-09-30)

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
1 104 102 103 121 236 542 291 136 112 120 127 116
2 104 101 102 124 245 548 279 134 111 121 125 116
3 104 102 100 124 259 547 270 133 110 122 125 115
4 103 102 101 127 277 556 262 133 110 123 127 115
5 102 101 101 131 284 560 253 132 110 123 126 113
6 103 101 102 135 294 571 242 129 110 123 125 112
7 103 102 103 138 311 561 234 126 111 123 126 112
8 104 101 104 139 322 557 227 125 111 123 125 111
9 104 101 105 141 336 535 220 126 111 123 125 110
10 103 103 105 143 344 532 218 124 112 123 124 110
11 103 104 106 143 349 516 211 122 114 123 124 111
12 103 106 107 144 353 500 202 121 115 123 124 111
13 104 105 107 145 373 495 193 120 114 123 124 111
14 103 104 107 151 385 488 189 119 114 123 123 110
15 103 102 106 153 408 480 184 117 114 124 122 110
16 103 101 107 153 441 479 178 116 114 125 122 109
17 103 101 110 161 457 470 172 114 116 124 121 109
18 103 101 112 164 459 445 171 114 116 124 121 108
19 104 101 112 166 462 433 165 113 117 124 121 108
20 103 102 112 171 482 422 159 113 119 124 120 109
21 102 102 114 179 508 407 156 114 121 124 119 109
22 102 101 116 187 510 401 155 114 121 125 118 109
23 102 101 120 195 509 386 154 113 120 124 117 108
24 102 102 120 202 519 382 150 114 120 126 119 108
25 102 101 121 209 523 381 148 114 119 125 118 108
26 102 100 121 205 529 362 147 114 118 126 117 108
27 102 100 121 210 539 349 144 110 118 126 117 108
28 101 102 119 217 545 336 143 109 119 126 116 107
29 101 106 116 227 558 318 142 110 118 126 116 107
30 103   117 235 554 305 141 110 119 125 116 107
31 103   118   545   139 112   127   106