Wade0/100
Wading is the most sensitive plan today. Use protected edges only, avoid crossings, and downgrade quickly if clarity or current feels wrong.
All Idaho reports
Fly fishing report · West
Mores Creek
Is Mores Creek worth the trip today? Check flow, weather, hatches, access, and rules for Idaho 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.
0
No clear best access mode. Wade, Bank / edge, and Float have the same top score. Use current access, footing, weather, and local rules to choose.
See update time and confidence
Live data checkHighHow much of the live flow, weather, and alert data came back.
Today's callHighA verified hard stop is active, so the avoid-or-wait decision is clearer than the fishing score itself.
Score calculated Aug 22, 2026, 8:21 PM MDTUsually checks again about every 45 minutes
Access choicesNo clear best mode
Wade, Bank / edge, and Float have the same top score. Use current access, footing, weather, and local rules to choose.
Bank / edgeNot recommended
This report does not recommend bank fishing on this reach.
Float0/100
A float can fit better than wading only if launches, shuttle, boat skill, wind, and local rules all check out.
Red Flag Warning issued August 22 at 3:59PM MDT until August 23 at 12:00AM MDT by NWS Boise ID
Your plan
Today's Mores Creek plan.
This is one of the simplest Boise-area trout options to reach, but it should be approached as an access-friendly small-river day, not a destination-size trophy fishery. Check the flow first, then decide whether you are looking for a short rainbow-and-whitefish session or whether low water and warm afternoons have already cut the window down too far.
- Check first
- Use RiverReports first for the public chart, then confirm the creek trend with USGS 13200000 above Robie Creek near Arrowrock Dam.
- Try
- Approach Mores Creek as a collection of short productive stops, not as an all-day march through identical roadside water.
- Leave when
- Skip when hot afternoons, shallow water, or muddy runoff turn the creek into a temperature or visibility compromise.
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
- 9.56 cfs
- From the latest stored river check. Open the official source for the newest reading.
- Air now
- 88°F
Current NWS forecast period
- Next 24h high
- 88.0°F
NWS air forecast near
- Rain chance
- 33%
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
Scattered Showers And Thunderstorms
Scattered Showers And Thunderstorms
- Wind
- 3 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
Mores Creek forecast point near Idaho City
The National Weather Service forecast is temporarily unavailable.
Live data
Where these readings come from
RiverReports gauge: Mores Creek above Robie Creek near Arrowrock Dam
How to fish it
How to fish Mores Creek today.
Mores Creek is strongest as a fast-planning local trout day in spring, early summer, and cooler fall windows. It is weakest when anglers treat a small accessible creek as if it should fish big all day through hot weather and low water.
Cool moderate flow
The best condition for short dry-dropper or light nymph sessions along the Highway 21 area.
Low clear flow
Fish early, downsize, and focus on shade, current seams, and undercut banks.
Runoff color
Treat the creek as a scouting stop or move on. Small roadside water gets hard to read quickly when color rises.
Hot late-summer afternoons
If the water feels too warm or shallow, shorten the trip or skip it rather than forcing trout to pay for a marginal window.
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.
- Attractor fly
- An attractor fly is bright or bold. It draws a strike without copying one exact insect.
- 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.
- Pale morning dun (PMD)
- Pale morning duns, or PMDs, are light-colored mayflies that often hatch in warmer months.
Why this call
Why this score
Public alertHurts
An active alert is in effect: Red Flag Warning issued August 22 at 3:59PM MDT until August 23 at 12:00AM MDT by NWS Boise ID. Check public safety sources before going.
Best mode nowHurts
Wade: Wading is the most sensitive plan today. Use protected edges only, avoid crossings, and downgrade quickly if clarity or current feels wrong.
FlowUse caution
USGS shows 10 cfs. The flow has been stable over about 6 hours. USGS marks this reading provisional and may revise it. USGS records for this date (1951-2025, 75 readings) show a median near 30 cfs and a low-water marker near 10 cfs; today's flow is unusually low for the date. Low water can make fish spooky, warm, pressured, or concentrated; check temperature and handling risk.
HeatUse caution
The current NWS air forecast is about 88F. This is an air forecast, not a water-temperature reading. Fish early and check the river with a stream thermometer.
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.
Cool moderate flows that keep roadside pockets alive without burying the creek in runoff color.
Skip when hot afternoons, shallow water, or muddy runoff turn the creek into a temperature or visibility compromise.
Fish early, start at one official access like Grayback or Bad Bear, and build the day out from the first stretch that still has cool moving water and clean holding seams.
If Mores Creek looks too thin or warm, switch to Boise River for bigger water or plan a cooler remote option like Deadwood instead of trying to squeeze a bad window.
What to try
Mores 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
Spring
What to look forMidges, BWOs, and small caddis
Early summer
What to look forCaddis, PMDs, and attractor windows
SummerCurrent
What to look forTerrestrials and evening caddis
Flies to try
Also try hopper-dropper
Fall
What to look forBWOs and midges
Each fly name opens its matching Fly Box guide.
Access and safety
Mores Creek access and rules.
Use these places as starting points. Open the access link below and check posted signs before you park or enter. IDFG lists no special rules for Mores Creek under the 2025-2027 fishing planner, so Southwest Region general bag limits apply. The same planner also notes that stocked hatchery rainbow trout provide most of the regular opportunity here.
Grayback Campground reach
A solid official Forest Service anchor above Idaho City with direct creek access below camp.
Bad Bear Picnic Area and Campground
Useful lower-area access where the creek runs right along Highway 21.
Highway 21 pullout water
IDFG's directions make clear that much of the creek is reached through roadside pullouts, which is the core strength of this fishery.
The Highway 21 area gives Mores Creek a lot of practical access, but it also means noise, traffic, and visible water can tempt anglers into moving too often.
Forest Service sites like Grayback and Bad Bear are the best official anchors for clean day-use starts because they add parking, facilities, and predictable entry points.
This is a creek where cooler timing matters as much as access. Easy parking does not fix poor water temperature.
River sources
Official Mores 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
Reviewed byBlueStreamFly River Review Team
Trip guidance checked
What was checked: This report uses official regulation, flow, weather, and public-access sources first, 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.
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.
See all 6 checked sources
Rules and closures
Check what is allowed, where the rule applies, and whether the river is open.
What this source covers
Open the current rules and check the river section, season, and special limits.
Flow and weather
Check the latest river reading and forecast before you leave.
What this source covers
Open this page and check the latest safety advice before your trip.
What this source covers
Open this river reading to check the latest level, flow, and update time.
What this source covers
Open this river reading to check the latest level, flow, and update time.
Access and land
Check public entry points, land rules, and seasonal access changes.
What this source covers
Open the land or access page, then check signs before you park or enter.
What this source covers
Open the land or access page, then check signs before you park or enter.
Quick answers
Quick Mores Creek answers.
Is Mores Creek worth fishing as a fly angler?
Yes, when you treat it as a practical close-to-Boise trout creek with realistic expectations instead of a destination-sized river.
What should I watch most closely here?
Watch flow, water temperature, and how much pressure the Highway 21 area is taking that day.
What gauge should I use for planning?
Start with RiverReports and USGS 13200000 above Robie Creek near Arrowrock Dam for the broad area trend.