Hatch-chart pattern list
Best Flies for Sand Creek (Wyoming)
The Sand Creek in Wyoming is primarily a wade fishery. It is a spring creek fishery for Brown Trout and Brook Trout, with the most reliable window in May, June, September. The patterns below are matched to the hatch chart we publish for this water. They are not a live report of what other anglers caught this week.
This is not a live report of other anglers' catches. Presence and flow live on the Sand Creek river page and the Wyoming destination guide.
What's hatching now
Month, insect, size, and pattern from the Sand Creek hatch chart. August is highlighted when that month exists in the chart. We do not invent a hatch that is not on the chart.
| Month | Insect | Size | Pattern |
|---|---|---|---|
| January | Midge (Chironomidae) | #20-26 | Zebra Midge |
| February | Midge (Chironomidae) | #20-26 | Griffith's Gnat |
| March | Blue-winged Olive | #18-20 | Parachute BWO |
| April | Blue-winged Olive | #18-20 | BWO Sparkle Dun |
| May | Caddis | #16-18 | Elk Hair Caddis |
| Blue-winged Olive | #18-20 | Parachute BWO | |
| June | Pale Morning Dun | #16-18 | PMD Sparkle Dun |
| Caddis | #16-18 | Elk Hair Caddis | |
| July | Pale Morning Dun | #16-18 | PMD Comparadun |
| Ant (Terrestrial) | #16-18 | Foam Ant | |
| August | Ant (Terrestrial) | #16-18 | Foam Ant |
| Grasshopper (Terrestrial) | #12-14 | Dave's Hopper | |
| September | Blue-winged Olive | #18-20 | Parachute BWO |
| October | Blue-winged Olive | #18-22 | BWO Sparkle Dun |
| November | Midge (Chironomidae) | #20-26 | Zebra Midge |
| December | Midge (Chironomidae) | #20-26 | Griffith's Gnat |
Nymphs
Subsurface patterns matched to this river's chart and catalog. Fish them at the size the chart lists, not the size that looks good in the bin.
Dries
Dries and terrestrials for the Sand Creek. If the chart says a size 18 PMD, do not start with a 12.
Streamers
Streamers and wets for stained water, banks, and low light. This is not a claim that streamers are "on" today.
No catalog patterns in this group yet. Use the hatch chart and the river guide.
Setup
5X and 6X fluorocarbon on nymphs, 5X on dries unless the fish are on Tricos, then 6X or 7X. A 3.0–3.8mm tungsten on the point and a lighter dropper is a default until you see the water. Tight-line the near bank and the heads of pockets. Use an indicator only when you need to search water you cannot euro.
FAQ
- What flies work on the Sand Creek?
- Start with Zebra Midge and Griffith's Gnat, then match size to the hatch chart for the month you are standing in. The Sand Creek does not need a 40-pattern box. It needs the right size on the insect that is actually in the drift.
- When is the best time to fly fish the Sand Creek?
- The editorial window we list is May, June, September, October. That is a planning month range, not a guarantee. Shoulder months can fish well if flows and water temperature cooperate.
- Do I need a guide on the Sand Creek?
- Wyoming has walk-up wade water and, on some sections, float water. A guide is worth it for a first float or a technical tailwater. A hatch chart and a gauge are enough for a first wade if you already nymph. We list local guides and shops on this page when we have them.
- Where can I see live flow for the Sand Creek?
- Open the Sand Creek river page for the USGS gauge, access notes, and the same hatch chart this fly list is built from. We do not publish other people's spots or fish counts.
- Is this a report of what's working now on the Sand Creek?
- No. Executive Angler does not publish other anglers' catches, GPS, or a crowdsourced hot fly. This page is hatch-chart patterns plus catalog flies. Presence on the river page is gauge and weather only.
Related
River guide
Sand Creek
Access, hatch chart, USGS gauge.
Destination
Wyoming
Trip planning for this region.
Pattern
Zebra Midge
Midge
Pattern
Griffith's Gnat
Dry
Pattern
BWO Sparkle Dun
Dry
Fly shop
Grand Teton Fly Fishing
565 N Cache St, Unit 2, Jackson, WY 83001
Fly shop
Jack Dennis Outdoor Shop
50 E Broadway Ave, Jackson, WY 83001
Nearby water
Bighorn River (Wyoming)
Open the river guide, then its fly list.
Nearby water
Encampment River
Open the river guide, then its fly list.
Nearby water
Firehole River
Open the river guide, then its fly list.
Nearby water
Gibbon River
Open the river guide, then its fly list.













