Generated Black Hills canyon stream scene representing French Creek in South Dakota, not an exact location photo
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Fly fishing report · Midwest

French Creek

Is French Creek worth the trip today? Check flow, weather, hatches, access, and rules for South Dakota before you go.

See the flow chart ↓

Generated artwork: BlueStreamFly · Regional illustration; not the exact location.

Good day to fish?Latest river check
Poor

Not today. Make another plan.

Best option: Float. A float can fit better than wading only if launches, shuttle, boat skill, wind, and local rules all check out.

See update time and confidence
Live data checkHighHow much of the live flow, weather, and alert data came back.
Today's callMediumWater temperature not verified; do not use this score to clear warm-water risk.
Score calculated Aug 22, 2026, 10:33 PM MDTUsually checks again about every 45 minutes
Best access methodFloat

These scores compare the risks of wading, bank fishing, and floating.

Wade6/100

Wading is the most sensitive plan today. Use protected edges only, avoid crossings, and downgrade quickly if clarity or current feels wrong.

Bank / edgeNot recommended

This report does not recommend bank fishing on this reach.

Float · Best fit32/100

A float can fit better than wading only if launches, shuttle, boat skill, wind, and local rules all check out.

Your plan

Today's French Creek plan.

French Creek gives anglers some of the strongest scenery and most committing trout access in the southern Black Hills. Start with RiverReports and USGS 06403300, then decide whether you want a shorter park-water session near access points or a true natural-area day where repeated crossings and the walk back matter as much as the fishing.

Check first
Custer State Park says the French Creek Natural Area covers 2,200 acres and that hikers should expect many creek crossings, wet feet, and a first mile that can run underground during drier months.
Try
Decide before leaving the trailhead whether the day is a shorter access-point session or a true natural-area walk.
Leave when
Skip when storms are active, crossings are unsafe, the creek is stained, water is warm, park access is restricted, or wildlife/visitor pressure changes the plan.

Live river check

What the river is doing

Check the latest flow and weather before you go. A quick change can make the river harder or less safe to fish.

Showing the latest stored river check while current readings load.
Flow
0.8 cfs
From the latest stored river check. Open the official source for the newest reading.
Air now
74°F

Current NWS forecast period

Next 24h high
91.0°F

NWS air forecast near

Rain chance
53%

For this forecast period

This is an air forecast, not a river-temperature reading. Check the water with a stream thermometer before fishing in hot weather.

Latest stored weather check

Chance Showers And Thunderstorms

Chance Showers And Thunderstorms

Wind
5 mph
Weather checked

Recent flow chart is loading

The latest stored reading is shown above. Check the official source below if you need the newest value now.

More forecast and source details
National Weather Service

French Creek forecast point near Custer State Park

The National Weather Service forecast is temporarily unavailable.

Live data

Where these readings come from

RiverReports gauge: French Creek above Custer

How to fish it

How to fish French Creek today.

The best French Creek days come on clear or slightly tinted moderate flow when you can move from seam to seam without every crossing becoming a chore. If the gorge is slick, thunderstorms are building, or the natural area would force too many high-water crossings, keep the day near the easier park access and leave the canyon for another time.

01

Moderate clear flow

Best for methodical nymphing and dry-dropper fishing through park runs, pocket water, and canyon edges.

02

Low late-season water

Expect stealthy fishing and remember the east-trailhead mile can go dry in places.

03

Higher runoff or storm pulse

Do not force the natural area. Fish only the easiest legal sections or postpone the trip.

04

Warm bright afternoon

Fish early, shorten the day, and keep moving water in the shade as the priority.

Fishing words used on this page
U.S. Geological Survey (USGS) gauge
A USGS gauge is an official river station that measures flow or water height.
Cubic feet per second (cfs)
Cubic feet per second, or cfs, shows how much water passes the gauge each second.
Nymph
A nymph is a young water insect. Anglers also use the word for a fly that copies it.
Seam
A seam is the line where fast and slow water meet.
Blue-winged olive (BWO)
Blue-winged olives, or BWOs, are small mayflies that often hatch in cool or cloudy weather.
Caddis
Caddis are small water insects. The adults look a little like tiny moths.
Dry-dropper
A dry-dropper rig has a floating fly with an underwater fly tied below it.
Midge
Midges are tiny flies and a common trout food, especially in cold water.
Pocket water
Pocket water is a small calm spot among rocks or fast current.
Soft hackle
A soft-hackle fly has moving fibers that can look like an insect rising through the water.
Why this call

Why this score

Best mode nowHurts

Float: A float can fit better than wading only if launches, shuttle, boat skill, wind, and local rules all check out.

FlowUse caution

USGS shows 1 cfs. The flow has been rising about 18% over about 6 hours. USGS marks this reading provisional and may revise it. USGS records for this date (1983-2025, 43 readings) show a median near 4 cfs and the lower quartile near 2 cfs; today's flow is below normal for the date. This is below normal, so edge depth, temperature, and pressure matter.

SeasonUse caution

This month is not listed as a top seasonal window in this page's reviewed season notes. Use current regulations, flow, temperature, and access checks before treating the score as a slam dunk.

HeatUse caution

The current NWS air forecast is about 74F, and the next 24-hour high reaches about 91F. This is an air forecast, not a water-temperature reading. This gauge has no live water temperature. Check the river with a stream thermometer before fishing.

Short-term weatherUse caution

The forecast has storm or heavy-precipitation risk, so timing and access matter more than the score alone.

Trip notes

Trip notes

Check these before you choose a reach.

Best flows

Use the above-Custer gauge with park weather and crossing safety. Stable cool water is the best signal.

When to leave

Skip when storms are active, crossings are unsafe, the creek is stained, water is warm, park access is restricted, or wildlife/visitor pressure changes the plan.

Local plan

Start with the above-Custer gauge, then choose a Custer State Park or French Creek Natural Area plan before picking flies.

Backup water

Compare Rapid Creek, Castle Creek, or Spearfish Creek when French Creek is high, warm, crowded, stormy, or access-limited.

What to try

French Creek flies through the year.

Match the time of year, then let rising fish and current speed guide the next change.

SeasonWhat to look forFlies to try

Each fly name opens its matching Fly Box guide.

Access and safety

French Creek access and rules.

Use these places as starting points. Open the access link below and check posted signs before you park or enter. Recheck the 2026 South Dakota Fishing Handbook and current park notices before fishing. Natural-area camping and fire rules are separate from fishing rules and still matter for trip planning.

French Creek Trailhead

The park's clearest named trail access near Horse Camp for anglers building a structured day.

French Creek Horse Camp area

A practical staging point for the trail-and-crossing sections of the creek.

East or West Natural Area trailheads

Use only when you are prepared for wet feet, repeated crossings, and the canyon commitment.

The natural area is unmarked enough that route discipline matters as much as fishing skill.

Expect repeated crossings and wet feet. The park says hikers generally cross the creek many times.

If the day depends on squeezing through the Narrows or finishing a long canyon push after a storm window, the plan is too aggressive.

Compare another river

If this water does not fit the day, check another report before you start the drive.

River sources

Official French Creek sources.

Official agencies and primary river operators come first. Secondary tools are labeled so you know what carries the most weight.

How this report was checked

How this report was checked

Trip guidance checked

What was checked: This report starts with official regulation, access, flow, weather, and public-land sources, then adds practical planning guidance for fly anglers.

Live measurements and forecasts keep their provider timestamps. Rules, access, and trip guidance use the source-review date shown here. BlueStreamFly planning advice is editorial interpretation, not an agency notice.

First-hand experience: BlueStreamFly does not claim a first-hand visit or local field test for this report unless a real contributor is explicitly named and linked.

See all 7 checked sources

Rules and closures

Check what is allowed, where the rule applies, and whether the river is open.

Flow and weather

Check the latest river reading and forecast before you leave.

Access and land

Check public entry points, land rules, and seasonal access changes.

More helpful links

Use these links for stocking, safety, and other local details.

Source check is old. Last checked . Open the official links now and check for changes.

See something wrong? Report a source problem. Please do not send private spots or private access notes.

Quick answers

Quick French Creek answers.

What gauge should I check for French Creek?

Start with RiverReports for the live chart and keep USGS 06403300 open as the official flow reference for the creek area.

Is French Creek a beginner-friendly Black Hills trout stream?

Only near the easiest park access. The natural-area day requires comfort with route-finding, wet crossings, and turning around early when conditions change.

Can I camp beside French Creek in the natural area?

Only under the park's rules: camping is limited to the canyon bottom, campsites must stay at least 50 feet from the stream, and open fires are prohibited.