The following is a group of fish timing charts along with a hatch index.
These charts create a baseline or a starting point.
Remember there are several factors such as water levels and water temperatures
This will give you a good idea of what to expect and when
P.S. Keep an eye on our "Fishing Reports" to get an accurate idea of what is going on.
Typically peaking in early to mid April to about the first week in May.
Peaking late October though November.
| SIZE |
NAME |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
| 18/20 |
Allocapnia granulta or vivipara |
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| |
Tiny Early Winter Black Stonefly |
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| 16/20 |
Nemouridae and Leuctridae |
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Tiny Late Winter Black Stonefly |
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| 10/14 |
Taeniopteryx nivalis |
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Early Black Stonefly |
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| 12/14 |
Brachyptera fasciata |
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Early Brown Stonefly |
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| 18/20 |
Baetis vagans |
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Blue Wing Olive Mayfly |
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| 16/18 |
Paraleptohplebia adoptiva |
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Slate Wing Mahogony Mayfly |
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| 12/14 |
Ephemerella subvaria |
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Dark Hendrickson Mayfly |
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| 16/18 |
Chimarra aterrima |
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Little Black Caddis |
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| 12/14 |
Leptophlebia cupida |
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Borcher's Drake Mayfly |
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| 14/16 |
Brachycentrus americanus |
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Grannom Caddis |
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| 2/8 |
Pteronarcys dorsata |
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Midwestern Salmon Fly Stonefly |
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| 10/18 |
Rhycacophilidae fenestra |
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Green Rock Worm Caddis |
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| 8/14 |
Perlodidae lsogenus and lsoperla |
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Medium Brown Stonefly |
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| 10/14 |
Siphoplecton basale |
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Great Speckeld Olive Mayfly |
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| 14/20 |
Hydropsyche bronta and simulans |
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Net Building Caddis |
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| 16/18 |
Ephemerella dorothea |
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Sulphur Dun Mayfly |
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| 14/18 |
Alloperla caudata and imbecilla |
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Little Yellow and Little Green Stonefly |
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| 14/16 |
Nectopsyche |
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White Miller Caddis |
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| 20/22 |
Baetis cingulatus |
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Blue Wing Olive Mayfly |
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| 14/16 |
Ephemerella invaria |
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True Hendrickson Mayfly |
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| 14/16 |
Ephemerella rotunda |
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Light Hendrickson Mayfly |
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| 10/12 |
Stenoema vicarium |
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American March Brown Mayfly |
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| 12/14 |
Stenoema fuscum |
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Sand Drake rapidus |
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| 12/14 |
Siphlounurus rapidus |
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Early Gray Drake Mayfly |
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| 10/12 |
Ephemera simulans |
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Brown Drake Mayfly |
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| 8/10 |
Phryganlidae ptilostomis |
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Great Ogrange Sedge Caddis |
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| 8/12 |
Green Oak Worm/Greenie Worm |
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Catepiller |
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| 20/28 |
Diptera |
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Midges |
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| 10/12 |
Isonychia sadleri |
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Mahogany Dun Mayfly |
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| 6/8 |
Hexagenia limbata |
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Great Olive Winged Drake Mayfly |
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| 10/12 |
Isonychia bicolor |
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White Gloved Howdy Mayfly |
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| 12/14 |
Stenoma canadense |
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Light Cahill Mayfly |
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| 10/12 |
Sephlonurus alternatus |
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Late Gray Drake Mayfly |
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| 10/12 |
Ephemera varia |
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Golden Drake Mayfly |
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| 6/8 |
Paragentina media |
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Big Golden Stonefly |
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| 14/18 |
Ephemerella lata |
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Slate Wing Olive Mayfly |
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| 22/24 |
Pseudocloen anoka |
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Tiny Blue Winged Olive Mayfly |
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| 18/20 |
Ephemerella simplex |
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Dark Slate Wing Olive Mayfly |
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| 8/24 |
Terrestrials |
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Ants/Grasshoppers/Beetles/Jasids |
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| 24/26 |
Tricorythodes stygiatus |
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Tiny WhiteWing Black Mayfly |
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| 16/18 |
Paraleptophlebia debilis |
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Small Slate Mahogany Dun Mayfly |
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| 18/20 |
Mystocides sepulchralis |
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Black Dancer Caddisfly |
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| 22/24 |
Beatis pygmalus |
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Little Medium Olive Mayfly |
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| 12/14 |
Ephoron album |
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White Fly Mayfly |
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| 14/16 |
Beatis heimalis |
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Slate Wing Brown Mayfly |
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