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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 06020600 Ruby River below reservoir near Alder, MT


Madison County, Montana
Hydrologic Unit Code 10020003
Latitude  45°14'30.73", Longitude 112°06'40.46" NAD83
Drainage area 595  square miles
Gage datum 5,286.6 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 1962-10-01 -> 2024-09-30)

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 52 46 44 65 161 605 406 353 298 152 75 60
2 52 46 45 66 174 600 395 355 292 140 75 59
3 52 46 46 66 186 596 382 358 283 138 73 57
4 52 46 46 67 199 603 366 358 276 136 72 57
5 51 46 46 67 212 617 354 359 276 133 71 57
6 51 46 47 68 231 626 345 362 277 129 70 58
7 51 46 48 69 257 624 342 361 276 126 70 58
8 51 46 49 68 283 622 342 354 275 123 72 57
9 51 46 51 69 300 612 338 351 272 120 72 56
10 51 45 52 70 312 596 334 353 270 114 71 56
11 51 45 52 71 318 582 330 351 266 111 70 55
12 51 44 52 73 322 572 325 348 259 110 70 55
13 50 44 52 76 341 570 323 345 252 108 68 54
14 50 44 52 77 368 578 325 346 245 105 66 54
15 50 44 52 79 402 574 325 347 241 101 70 54
16 50 44 52 84 441 564 323 346 239 99 70 53
17 50 44 52 87 471 570 321 344 235 97 70 53
18 49 44 54 88 484 559 325 339 229 95 69 54
19 50 44 54 90 501 543 324 337 228 94 69 54
20 49 44 56 92 527 531 328 332 224 93 68 54
21 49 44 57 94 556 521 328 325 221 91 68 53
22 48 44 57 99 567 513 332 323 216 86 67 53
23 48 44 57 105 568 503 335 320 210 83 67 53
24 48 44 59 113 572 497 338 321 204 83 67 53
25 48 44 60 117 591 491 340 328 199 82 67 53
26 48 44 60 123 609 484 342 326 195 81 66 53
27 47 44 61 130 612 472 343 319 191 79 66 53
28 46 44 63 136 608 462 346 316 187 77 66 53
29 46 44 63 142 614 449 349 315 185 76 65 53
30 47   63 151 612 431 349 309 177 75 62 52
31 47   63   609   351 303   74   52