Wade · Best fit74/100
Wading is in play only where your chosen access has clear footing, legal entry, and no forced crossings.
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Fly fishing report · West
Blue River
A Silverthorne-focused Blue River report for Dillon Dam releases, technical trout tactics, strict regulations, access, hatches, and flow checks.
Check flow & weatherToday's fishing decisionMost live data available
74
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Blue River looks fishable right now.
Current USGS flow is 54 cfs and has been stable for about 6 hours. Today's flow is unusually low for this date and below the usual low-water marker near 57 cfs. Low water can make fish spooky, warm, pressured, or concentrated; check temperature and handling risk.
Best supported approachWade
Watch nextFlow: Current USGS flow is 54 cfs and has been stable for about 6 hours. Today's flow is unusually low for this date and below the usual low-water marker near 57 cfs.
Updated Aug 3, 1:24 AM UTCUsually refreshes about every 45 minutes
Best supported approachWade
Compare wading, bank fishing, and floating before choosing how you will fish.
Bank / edge74/100
Bank and edge fishing remains a practical low-commitment option if access is legal and footing is safe.
FloatNeed data
This report does not describe this as a primary mode. Verify legal access, depth, launches, and retreat options before planning around it.
Check before you drive
Current flow and weather.
Look at whether the river is rising or falling, then check wind, rain, and storms. These can change both safety and fishing.
Loading current flow and weather.
Before you rely on this report
How current is this report?
Conditions can change quickly. Check these dates before you decide to fish, and open the official source when safety or rules matter.
- River conditions
- Checked Aug 2, 2026, 9:24 PM
- Fishing guidance
- Reviewed May 31, 2026
- Public access
- No reviewed map pin available
- Rules and closures
- Official rule links checked
High confidence in the current score inputs.
7 sources are listed below for you to open.
3 public access records are listed. Private spots are never shown.
Source checked Jul 30, 2026
Plan your access
Know where you can enter.
These are public parking, launch, trail, or recreation areas—not secret fishing spots. We never show an angler's private pins, notes, or photos here.
- 0
- Shown on map
- 3
- No map pin
Location checkedDescription only
01No map pin
Area description
Silverthorne town reach
Convenient public access, heavy pressure, and technical catch-and-release planning.
Restrictions and seasonal notes
Read CPW reach language before applying one rule to the whole river.
Town access is easy, but fish see heavy pressure.
02No map pin
Area description
Blue River SWA context
CPW maps should be checked carefully because some areas have no public access.
Restrictions and seasonal notes
Read CPW reach language before applying one rule to the whole river.
Town access is easy, but fish see heavy pressure.
03No map pin
Area description
Lower Blue below Green Mountain
A different reach with separate flow, access, and regulation planning.
Restrictions and seasonal notes
Read CPW reach language before applying one rule to the whole river.
Town access is easy, but fish see heavy pressure.
How to fish it
Expect technical, clear tailwater fishing.
The Blue below Dillon is a pressured cold tailwater where small flies, clean drifts, and exact regulation checks matter. Use the Silverthorne gauge before planning around town access or lower Blue alternatives.
- Use the below-Dillon gauge for Silverthorne flow and release context.
- Start with small midges, baetis, mysis-style patterns, and light tippet.
- Check CPW reach language because Blue River rules change by section.
- Expect crowds near town and private-property complexity outside obvious public access.
Why the score looks this way
FlowUse caution
USGS shows 54 cfs with a stable over about 6 hours trend. Today's flow is unusually low for this date and below the usual low-water marker near 57 cfs. Low water can make fish spooky, warm, pressured, or concentrated; check temperature and handling risk.
SeasonHelps score
Summer: Tailwater temperatures can stay cold, but pressure and reach rules matter.
Water temperatureHelps score
USGS water temperature is about 43F, with no heat stop triggered.
Public alertsHelps score
No active NWS alert was returned for this forecast point.
Fishing usefulnessHelps score
Skip the Silverthorne plan when icy banks remove safe footing, when section-specific rules are unclear, when town pressure has every visible seam occupied, or when higher releases turn a simple crossing into risky tailwater current.
Read the water
What changes the plan.
The Blue fishes best when releases are stable and trout are not stressed by ice, crowding, or low warm water. If town water is crowded, consider scouting another public reach instead of forcing the same pool.
Low clear release
Use small flies, long leaders, and sight-fishing patience.
Stable medium release
Nymph riffles, slots, and drop-offs; dry-dropper rigs work in shallower lanes.
High release
Skip risky crossings and fish banks, softer seams, and protected edges.
Winter ice
Expect shelf ice, slow takes, and small midge-focused windows.
Your trip plan
Know when to go—and when to skip it.
Best flows
Use the below-Dillon trend more than a single target number. Stable or gently rising releases are the cleanest read for technical nymphing and dry-dropper work; a sudden push should move you to softer banks, shorter wades, or a different reach.
When to skip
Skip the Silverthorne plan when icy banks remove safe footing, when section-specific rules are unclear, when town pressure has every visible seam occupied, or when higher releases turn a simple crossing into risky tailwater current.
Local plan
Choose the section before tying on flies: the Silverthorne town water for a quick technical session, the SWA-mapped access points when you want clearer public-boundary confidence, or the lower Blue only after confirming that separate reach's flow and rules.
Backup water
If the Silverthorne water is too crowded or pushy, pivot to the upper Colorado for a broader public-river day or to another clearly posted Blue reach only after checking that reach's separate rules and release context.
Hatches & flies
Bring a flexible box.
TimingWhat to watchUseful flies
WinterMidges, mysis-style food, small baetisZebra midge, black beauty, mysis shrimp, RS2
Fly pattern · report suggests “Zebra midge”Zebra MidgeLook for a very slim tapered thread body, evenly spaced contrasting wire rib, a small bead, and no tail or wing. The reviewed classic is black with silver wire and a silver bead. Red, olive, brown, glass-bead, jig-hook, resin-coated, or tailed forms must remain labeled variations rather than replacing the classic identity.See photos & how to fish it ↗
Fly pattern · report suggests “black beauty”Black Beauty MidgeA very slim black thread body, fine silver rib, and small dark thorax define the core Black Beauty. Glass-bead Mercury Black Beauty and flash-wing variants must stay labeled separately.See photos & how to fish it ↗+ 2 more reviewed guides in the Fly Box SpringBWOs, midges, caddisBWO emerger, foam back emerger, caddis pupa, perdigon
Fly family · report suggests “BWO emerger”Blue-Winged Olive PatternsBWO describes a hatch group, not one fly. Nymph, emerger, dry, cripple, and spinner profiles must stay separate because they occupy different parts of the water column.See family guide ↗
Fly family · report suggests “foam back emerger”Mayfly Patterns by StageMayfly nymphs, emergers, upright-wing duns, cripples, soft hackles, and flat-wing spinners occupy different depths and require different profiles.See family guide ↗+ 2 more reviewed guides in the Fly Box SummerPMDs, caddis, yellow sallies, terrestrialsPMD, elk hair caddis, yellow sally, ant, small hopper
Fly family · report suggests “PMD”Pale Morning Dun PatternsPMD names an insect group, not one fly. Pale nymphs, trailing-shuck emergers, upright or low-riding duns, cripples, and spent-wing spinners stay visibly separate.See family guide ↗
Fly pattern · report suggests “elk hair caddis”Elk Hair CaddisLook for a tented elk- or deer-hair wing, clipped hair head, dubbed body, rib, and hackle palmered along the body. The body color should be labeled because tiers often match different natural caddis colors.See photos & how to fish it ↗+ 3 more reviewed guides in the Fly Box FallBWOs, midges, small baitfishBWO dry, zebra midge, RS2, small streamer
Fly family · report suggests “BWO dry”Blue-Winged Olive PatternsBWO describes a hatch group, not one fly. Nymph, emerger, dry, cripple, and spinner profiles must stay separate because they occupy different parts of the water column.See family guide ↗Fly pattern · report suggests “zebra midge”Zebra MidgeLook for a very slim tapered thread body, evenly spaced contrasting wire rib, a small bead, and no tail or wing. The reviewed classic is black with silver wire and a silver bead. Red, olive, brown, glass-bead, jig-hook, resin-coated, or tailed forms must remain labeled variations rather than replacing the classic identity.See photos & how to fish it ↗+ 2 more reviewed guides in the Fly Box 01
Fish one lane thoroughly before changing pools.
02
Use smaller indicators or tight-line rigs in clear pressured water.
03
Watch for seasonal closures and spawning fish before stepping into gravel.
04
Do not assume the lower Blue has the same rules as Silverthorne.
05
Move to less-crowded access rather than lining up behind every visible fish.
Rules & closures
Check the official rules before you go.
Open the agency page to confirm the exact river section, species, season, tackle rules, limits, and emergency closures.
Official links checkedRules for this river or sectionNo special rule found
We did not find a special rule for this river.
We checked the state source but did not find a clearly supported exception for this river. Check the official rules for the exact section you plan to fish.
Rules checkedJul 30, 2026
Report a correction ↗Always follow the official rule
This summary helps with trip planning. The linked agency rule is the one you must follow.
Updates from anglers
What anglers are seeing.
Recent observations from general areas of Blue River. We review every update before it appears and never publish exact fishing spots, private access details, or photo locations.
Angler updates are not loading right now.
You can still use the river plan above. Check back later for recent observations from other anglers.
Where this report comes from
Open the sources we checked.
Fishing guidance checked: May 31, 2026
Site check: Jul 14, 2026. We regularly test report links, live scores, flow and weather data, and page loading. The content date changes only when the fishing guidance or its sources change.
flowRiverReports: Blue River below DillonflowUSGS monitoring location: Blue River below DillonbackgroundColorado Parks and Wildlife Blue RiverregulationColorado fishing special regulationsaccessSummit County recreational pathways GISaccessColorado Parks and Wildlife Blue River SWA mapsafetyNational Weather Service forecast point near Silverthorne
Common questions
Before you leave.
What section does this Blue River report cover?+
It focuses on the Silverthorne reach below Dillon Reservoir, with lower Blue context where it affects planning.
Why is the Blue River technical?+
The water is clear, cold, heavily fished, and governed by reach-specific rules, so small flies and clean drifts matter.
What gauge should I use?+
Use RiverReports and USGS 09050700 below Dillon for the Silverthorne tailwater.
Can I fish the same way below Green Mountain?+
Not safely without a separate check. The lower Blue has different access, flow, and regulation context.