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Low Flow Forecasts

Low Flow Forecasts Use Measured Streamflows

The low flow forecasts below are generated with NRCS June - July streamflow volume forecasts for June 1, 2015 and measured flows during spring/summer runoff. Forescasts will be updated as critical thresholds are met. 

For questions on interpreting Low Flow Forecasts please contact Lucas Zukiewicz at (406) 587-6843

 

Blackfoot River near Bonner   Very Wet Wet Normal Dry Very Dry
Given current forecast of: KAF 225 184 154 125 81
Low Flow level will be near: CFS 496 472 454 436 410
             
    Very Early Early Normal Late Very Late
Date Flows will reach 700 CFS   6/28/15 7/5/15 7/10/15 7/14/15 7/21/15
             
             
South Fork Jocko near Arlee   Very Wet Wet Normal Dry Very Dry
Given current forecast of: KAF 14.5 12.2 10.7 9.1 6.8
Low Flow level will be near: CFS 20 18 14 12 5
             
    Very Early Early Normal Late Very Late
Date Flows will reach 60 CFS   6/22/15 6/26/15 6/28/15 6/30/15 7/4/15
             
             
Big Hole River near Wisdom   Very Wet Wet Normal Dry Very Dry
Given current forecast of: KAF 63 41 25 10 1
Low Flow level will be near: CFS 28 20 14 9 5
             
    Very Early Early Normal Late Very Late
Date Flows will reach 40 CFS   6/27/15 6/29/15 6/29/15 6/30/15 7/1/15
Date Flows will reach 20 CFS   -- -- -- -- --
             
Big Hole River near Melrose   Very Wet Wet Normal Dry Very Dry
Given current forecast of: KAF 300 230 187 142 75
Low Flow level will be near: CFS 264 229 208 186 153
             
    Very Early Early Normal Late Very Late
Date Flows will reach 250 CFS   7/14/15 7/22/15 7/27/15 8/1/15 8/9/15
             
             
Jefferson River near Twin Bridges Very Wet Wet Normal Dry Very Dry
Given current forecast of: KAF 350 245 173 101 -4
Low Flow level will be near: CFS 355 278 225 172 95
             
    Very Early Early Normal Late Very Late
Date Flows will reach 600 CFS   7/7/15 7/14/15 7/20/15 7/25/15 8/1/15
             
             
Gallatin River near Gateway   Very Wet Wet Normal Dry Very Dry
Given current forecast of: KAF 198 163 140 117 82
Low Flow level will be near: CFS 456 439 429 418 402
             
    Very Early Early Normal Late Very Late
Date Flows will reach 800 CFS   7/4/15 7/7/15 7/9/15 7/12/15 7/15/15
Date Flows will reach 500 CFS   7/31/15 8/6/15 8/10/15 8/14/15 8/20/15
             
             
Smith River near Fort Logan   Very Wet Wet Normal Dry Very Dry
Given current forecast of: KAF 65 45 32 18 10
Low Flow level will be near: CFS 74 61 53 43 38
             
    Very Early Early Normal Late Very Late
Date Flows will reach 100 CFS   5/19/15 6/7/15 6/20/15 7/2/15 7/21/15
             
             
Dearborn River near Craig   Very Wet Wet Normal Dry Very Dry
Given current forecast of: KAF 44 30 20 10 1
Low Flow level will be near: CFS 37 35 34 33 32
             
    Very Early Early Normal Late Very Late
Date Flows will reach 80 CFS   6/25/15 7/6/15 7/14/15 7/22/15 8/2/15
Date Flows will reach 60 CFS   -- -- -- -- --
Date Flows will reach 40 CFS   -- -- -- -- --