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All Idaho reports
Mores Creek
Generated artwork: BlueStreamFly · Regional illustration; not the exact location.
Should I go fishing?
Check the water temperature first.
Water temperature is unconfirmed. Use a stream thermometer; stop trout fishing at 70°F or warmer, or sooner if fish show stress.
Fishing rating74
Rating updatedRiver local time:
Why this recommendation?
The current NWS air forecast is about 60F, and the next 24-hour high reaches about 84F. This is an air forecast, not a water-temperature reading. Fish early and check the river with a stream thermometer.
Available live dataHighHow much of the live flow, weather, and alert data came back.
Confidence in this recommendationMediumWater temperature not verified; do not use this score to clear warm-water risk.
Usually checks again about every 45 minutes
If you go
- 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.
Flow and weather
Showing server-checked river conditions while current readings refresh.
- Flow
- 20 cfs
- From the latest stored river check. Open the official source for the newest reading.
- Air forecast
- 60°F
- Next 24h high
- 84.0°F
NWS air forecast near
- Rain chance
- 0%
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
Mostly Clear
- Wind
- 5 mph
- Weather checked
More forecast and source details
Mostly Clear
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
Flies for this time of year
Seasonal starting points, not a live hatch report. Match what you see on the water.
- Blue-Winged Olive PatternsParachute BWOView fly guide ↗
- RS2View fly guide ↗
- Zebra MidgeView fly guide ↗
- Woolly Buggersmall buggerView fly guide ↗
See flies for every season
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
Summer
What to look forTerrestrials and evening caddis
Flies to try
Also try hopper-dropper
FallThis season
What to look forBWOs and midges
Each fly name opens its matching Fly Box guide.
More fishing tips
Methods, fish species and trip notes
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.
Wading, bank fishing or floating?
Access choicesNo single best option
Wading and Floating have the same top score. Use current access, footing, weather, and local rules to choose.
Wading74/100
Wading is in play only where your chosen access has clear footing, legal entry, and no forced crossings.
Bank fishingNot recommended
This report does not recommend bank fishing on this reach.
Floating74/100
A float is in play where this report supports boat access and wind, releases, and shuttle logistics are manageable.
Full river report
Is Mores Creek worth the trip today? Check flow, weather, hatches, access, and rules for Idaho before you go.
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.
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
HeatUse caution
The current NWS air forecast is about 60F, and the next 24-hour high reaches about 84F. This is an air forecast, not a water-temperature reading. Fish early and check the river with a stream thermometer.
FlowHelps
USGS shows 20 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 typical middle range of 18 cfs to 43 cfs. Flow is within the typical range for this date, so weather, temperature, and access become the next checks.
SeasonHelps
Late summer: Viable mainly in cooler morning windows or in years with better carryover flow.
Public alertsHelps
No active NWS alert was returned for this forecast point.
Fishing usefulnessHelps
Skip when hot afternoons, shallow water, or muddy runoff turn the creek into a temperature or visibility compromise.
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.
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.
Before you go
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.
Where to access the river
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.
Sources and report details
Official agencies and primary river operators come first. Secondary tools are labeled so you know what carries the most weight.
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.
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.
Quick questions
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.