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Bitterroot River, MT Hatch Chart

Insect Size Begin End
Black Stones 12 March 15 May 15
Salmonfly 4-8 June 15  July 15
BWO 16-20 April 5 June 5
Olive Stones 8-10 April 5 May 15
BWO  16-20   September 1  October 31
PMD 16-18 June 15   September 15  
Golden Stones 8-10 June 15 July 15
Yellow Sallies 14-16 June 15 August 31
Blue Quills 16-18 June 15 August 31
Green Drakes 8-10 June 1 July 30
Trico 20-24  July 15 September 15

 

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