French Creek
Fly fishing in Iowa · intermediate · Best seasons: spring, summer, fall
Target Species
Brown Trout, Brook Trout
About This Water
Allamakee County spring creek with wild trout. Remote setting in wooded valley.
Fishing Recommendations
Welcome to the Driftless Area of Northeast Iowa. As your guide, I’m excited to walk you through French Creek, located in Allamakee County. While many anglers flock to the famous waters of Wisconsin or Minnesota, French Creek remains one of the crown jewels of Iowa’s coldwater fisheries.
🎣 Location Overview
French Creek is a classic limestone spring creek characterized by crystal-clear water, lush riparian corridors, and a high gradient for a Midwestern stream. It is located roughly 10 miles north of Waukon, Iowa.
What makes French Creek special is its wild character. Unlike many Iowa streams that rely heavily on stocking, French Creek boasts a robust population of naturally reproducing Brown Trout and a re-established population of native Brook Trout. It flows through the French Creek Wildlife Management Area (WMA), offering several miles of public access in a secluded, rugged valley. The water stays cold year-round due to heavy spring influence, making it a reliable sanctuary even during the heat of mid-summer.
🐟 Target Species & Behavior
- Brown Trout (Wild): These are the kings of the creek. They are notoriously "spooky" due to the gin-clear water. They hold tightly against undercut banks, beneath overhanging grasses, and in deep "trench" pools. They are highly piscivorous once they reach 14+ inches but feed primarily on scuds and midges.
- Brook Trout: Generally found in the upper reaches and faster, oxygenated riffles. Iowa’s "heritage" Brookies are smaller (typically 6-10 inches) but possess stunning colors. They are opportunistic but will bolt at the sight of a poorly cast fly line.
Behavior Note: These fish see a fair amount of pressure in the easy-access spots. Success requires a "stealth-first" approach—think like a hunter.
📅 Best Times to Fish
- Spring (April - May): The prime window. Early season brings Blue Winged Olives (BWOs) and Grannom Caddis. Water levels are usually stable unless there’s a major rain.
- Summer (June - August): The "Terrestrial Season." This is when French Creek shines. As the grasses grow tall, hoppers, ants, and beetles become the primary food source. Focus on early mornings or late evenings to avoid the midday sun.
- Fall (September - October): My personal favorite. The Brookies are in their spawning colors, and the big Browns become aggressive and territorial. Streamer fishing picks up significantly during this time.
- Prime Window: On French Creek, the "Golden Hour" is very real. The hour before sunset during a Trico hatch (July/August) can provide some of the most technical and rewarding dry fly fishing in the Midwest.
🪰 Recommended Flies & Techniques
Top Fly Patterns
- Nymphs: Pink Squirrel (a Driftless staple), Gold-Ribbed Hare’s Ear (#16-18), and Zebra Midges (#18-22).
- Scuds/Sowbugs: Gray or Olive Scuds (#16-18) are mandatory. The limestone water is crawling with them.
- Dry Flies: Elk Hair Caddis (#14-16), Light Cahill, and Parachute Adams. For the Trico hatch, use a #20-24 Trico Spinner.
- Terrestrials: Dave’s Hopper, Fat Albert (tan/black), and foam beetles.
- Streamers: Black or Olive Woolly Buggers or small Slumpbusters (#8-10).
Techniques
- The Stealth Approach: Stay out of the water whenever possible. If you must wade, move slowly and upstream. Kneeling on the bank to cast is often the only way to get close to big Browns.
- Nymphing: Use a "Dry-Dropper" rig. A high-floating foam terrestrial with a weighted scud or nymph 18 inches below is lethal and prevents the splash of a heavy indicator.
- Streamer Stripping: Cast your streamer tight to the opposite undercut bank and strip it back aggressively across the current.
💡 Pro Tips & Local Knowledge
- Long Leaders are Essential: Because the water is so clear, I recommend 9-foot to 12-foot leaders tapered down to 5X or 6X fluorocarbon tippet.
- The "Trench" Logic: In the middle sections of French Creek, the water looks shallow until you see the dark blue/green "trenches" carved into the limestone. Even if you don't see fish, they are tucked under the ledge of that trench.
- Beware of the "Driftless Jungle": By July, the banks are covered in Wild Parsnip (which can burn skin) and Stinging Nettles. Wear long pants and sleeves even if it's hot.
- Focus on the Bends: French Creek is very curvy. The "outside" of every bend almost always holds the largest fish in that stretch.
⚠️ Important Information
- Regulations: As of current Iowa DNR rules, the entirety of French Creek is Catch and Release only. All trout must be immediately released. Additionally, you are restricted to artificial lures/flies only.
- Permits: You need a valid Iowa Fishing License and a paid Trout Fee.
- Access: Use the French Creek WMA parking lots. Do not trespass on private land outside the WMA boundaries; the borders are usually well-marked with "Public Hunting/Fishing" signs.
- Gear Recommendation: A 7.5' to 8.5' 3-weight or 4-weight rod is perfect. A 5-weight is okay for streamers, but it often feels like "too much gun" for these delicate waters.
Tight lines, and remember to pinch your barbs—it makes releasing those beautiful wild trout much easier on the fish!
Bug Hatches & Matching Flies
| Hatch | Type | Peak months | Time of day | Hook sizes | Matching flies |
|---|---|---|---|---|---|
| Blue-Winged Olive (BWO) Baetis | mayfly | April, May, September, October | Mid-day | #18-22 | RS2 #20-22, Parachute BWO #18-22, BWO Emerger #18-20 |
| Sowbug Asellidae | crustacean | Year-round | All day | #14-18 | Ray Charles #14-18, Pink Squirrel #14-16 |
| Scud Gammarus | crustacean | Year-round | All day | #12-18 | Diamond Scud #14-16, UV Orange Scud #12-16 |
| Trico Tricorythodes | mayfly | July, August, September | Early Morning | #20-24 | Trico Spinner #20-24, Sunray Trico #22 |
| Grannom Caddis Brachycentrus | caddis | April, May | Afternoon/Evening | #14-16 | Elk Hair Caddis #14-16, LaFontaine's Deep Pupa #14-16 |
| Pale Morning Dun / Sulfur Ephemerella | mayfly | June, July | Evening | #16-18 | Sulfur Parachute #16-18, CDC Sulfur Emerger #16-18 |
| Terrestrials (Ants & Beetles) Formicidae / Coleoptera | terrestrial | July, August, September | Late Morning/Afternoon | #12-18 | Black Foam Beetle #14-16, Cinnamon Ant #16-18 |
| Crane Fly Tipulidae | midge | August, September | Evening | #10-14 | Crane Fly Larva #10-12, Daddy Long Legs #12-14 |