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Lamoille River, Vermont Hatch Chart

Insect Size Begin End
Hendrickson 12-16 April 1 May 15
BWO 16-20 April 1 May 15
BWO 16-20 August 15 October 15
Caddis 14-16 April 15 October 15
Eggs 12-16 February 15 May 15
Hex 6-8 June 1 July 15
Golden Drake 10-12 June 15 August 15
Midges 18-22 July 15 September 15
Stone 8-12 April 15 August 15
White Mayfly 12-16 August 15 September 15
Sulphur 14-18 May 15 July 15
Trico 20-24 August 15 September 15
Terrestrials 8-18 July 15 September 16

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