Hatches
Hatch Chart
(Check name links for fly patterns)
Name
Latin
Sizes
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Backswimmers
Heteroptera
14-18
All Year
Jun 10 - Sep 10
Apr 14 - Sep 30
Jul 20 - Sep 10
Mar 1 - May 20
Aug 14 - Dec 14
Apr 3 - Aug 20
All Year
All Year
Jul 10 - Sep 10
Crane Fly Larvae
Tipulidae
6-14
All Year
Jul 1 - Sep 10
Jun 14 - Aug 20
All Year
Dragon Flies
Odonata
10-12
Jun 14 - Aug 20
Dragon Fly Nymphs
Anisoptera
10-12
All Year
Jul 1 - Sep 10
All Year
Mayfly Nymphs
Ephemeridae
14-22
All Year
All Year
All Year
All Year
All Year
Jun 10 - Aug 31
Jun 1 - Aug 31
Aug 10 - Sep 10
All Year
Sculpins
Cottidea
4-10
All Year
All Year
Speckled Duns
Callibaetis
14-20
May 14 - Aug 20
Stonefly Nymphs
Plecoptera
6-14
All Year
Jun 14 - Sep 20
Tricos
Tricorythodes
18-20
Jul 20 - Aug 31
Water Beetles
Heteroptera
10-14
All Year
Waterboatmen
Heteroptera
12-20
All Year
Name
Backswimmers
Latin
Heteroptera
Sizes
14-18
All Year
Name
Latin
Coleoptera
Sizes
12-20
Jun 10 - Sep 10
Name
Latin
Formicoidea
Sizes
16-22
Apr 14 - Sep 30
Name
Latin
Formicoidea
Sizes
16-20
Jul 20 - Sep 10
Name
Latin
Spring Baetis
Sizes
18-20
Mar 1 - May 20
Name
Latin
Fall Baetis
Sizes
18-24
Aug 14 - Dec 14
Name
Latin
Tricoptera
Sizes
12-20
Apr 3 - Aug 20
Name
Latin
Tricoptera
Sizes
14-20
All Year
Name
Latin
Tricoptera
Sizes
14-18
All Year
Name
Latin
Formicoidea
Sizes
16-20
Jul 10 - Sep 10
Name
Crane Fly Larvae
Latin
Tipulidae
Sizes
6-14
All Year
Name
Latin
Gryllidea
Sizes
10-14
Jul 1 - Sep 10
Name
Latin
Anisoptera
Sizes
12-14
Jun 14 - Aug 20
Name
Latin
Zygotera
Sizes
12-20
All Year
Name
Dragon Flies
Latin
Odonata
Sizes
10-12
Jun 14 - Aug 20
Name
Dragon Fly Nymphs
Latin
Anisoptera
Sizes
10-12
All Year
Name
Latin
Acrididea
Sizes
4-14
Jul 1 - Sep 10
Name
Latin
Hirudinea
Sizes
4-14
All Year
Name
Mayfly Nymphs
Latin
Ephemeridae
Sizes
14-22
All Year
Name
Latin
Diptera
Sizes
16-26
All Year
Name
Latin
Diptera
Sizes
16-26
All Year
Name
Latin
Diptera
Sizes
16-28
All Year
Name
Latin
Tricoptera
Sizes
14-20
All Year
Name
Latin
Infrequens
Sizes
14-20
Jun 10 - Aug 31
Name
Latin
Inermis
Sizes
16-20
Jun 1 - Aug 31
Name
Latin
Formicoidea
Sizes
16-20
Aug 10 - Sep 10
Name
Latin
Isopds
Sizes
14-18
All Year
Name
Sculpins
Latin
Cottidea
Sizes
4-10
All Year
Name
Latin
Crustaceans
Sizes
16-18
All Year
Name
Speckled Duns
Latin
Callibaetis
Sizes
14-20
May 14 - Aug 20
Name
Stonefly Nymphs
Latin
Plecoptera
Sizes
6-14
All Year
Name
Latin
Summer Baetis
Sizes
18-20
Jun 14 - Sep 20
Name
Tricos
Latin
Tricorythodes
Sizes
18-20
Jul 20 - Aug 31
Name
Water Beetles
Latin
Heteroptera
Sizes
10-14
All Year
Name
Waterboatmen
Latin
Heteroptera
Sizes
12-20
All Year