Sugar River water at Kelleyville New Hampshire
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Fly fishing report · Northeast

Sugar River

Is Sugar River worth the trip today? Check flow, weather, hatches, access, and rules for New Hampshire before you go.

See the flow chart ↓

Photo: John Phelan Opens in a new tab. · CC BY-SA 4.0

Good day to fish?Latest river check
Good fishing

Yes. Fishing looks good.

Good fishing based on the verified flow and weather. No official live water-temperature reading is available. Carry a thermometer during warm weather and stop if the water is stressful for trout.

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, 10:45 PM EDTUsually checks again about every 45 minutes
Best access methodWade

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

Wade · Best fit74/100

Wading is in play only where your chosen access has clear footing, legal entry, and no forced crossings.

Bank / edgeNot recommended

This report does not recommend bank fishing on this reach.

FloatNot recommended

This report does not recommend floating this reach.

Your plan

Today's Sugar River plan.

The Sugar River gives Upper Valley anglers a local river plan with a real flow check. It can fish well when stable and cool, but rain and summer heat both deserve respect.

Check first
Use the West Claremont gauge before choosing a reach.
Try
Use short casts and move quietly. Many good Sugar River spots are small.
Leave when
Skip it when the gauge is rising, storm stain reduces visibility, summer water is too warm, or parking and public access are not clear at the chosen road or town reach.

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
54 cfs
From the latest stored river check. Open the official source for the newest reading.
Air now
63°F

Current NWS forecast period

Next 24h high
75.0°F

NWS air forecast near

Rain chance
17%

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

Patchy Fog

Patchy Fog

Wind
0 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

Sugar River near West Claremont

The National Weather Service forecast is temporarily unavailable.

Live data

Where these readings come from

Latest stored USGS gauge: Sugar River at West Claremont

From the latest stored river check. Open the official source for the newest reading.

How to fish it

How to fish Sugar River today.

Good windows are cool, stable mornings after the river has settled from rain. If flow is climbing, visibility is poor, or water temperature is high, move to a colder stream or a bigger warmwater option.

01

Stable and cool

Fish nymphs, caddis, small dries, and soft hackles.

02

Slight stain

Try a small bugger or larger nymph near banks and tailouts.

03

Muddy or rising

Wait for the river to drop. Small rivers become unsafe quickly.

04

Low and warm

Fish early or choose a colder option.

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.
Riffle
A riffle is shallow, fast water broken by rocks.
Tailout
A tailout is the shallow, slower water at the lower end of a pool.
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.
Emerger
An emerger copies an insect as it rises from below the water toward the surface.
Midge
Midges are tiny flies and a common trout food, especially in cold water.
Why this call

Why this score

FlowUse caution

USGS shows 54 cfs. The flow has been stable over about 6 hours. USGS marks this reading provisional and may revise it. USGS records for this date (1928-2025, 98 readings) show a median near 74 cfs and the lower quartile near 61 cfs; today's flow is below normal for the date. This is below normal, so edge depth, temperature, and pressure matter.

SeasonHelps

Summer: Early mornings only when water temperature stays safe.

WeatherHelps

The current NWS air forecast is about 63F, and the next 24-hour high reaches about 75F. Patchy Fog.

Public alertsHelps

No active NWS alert was returned for this forecast point.

Fishing usefulnessHelps

Skip it when the gauge is rising, storm stain reduces visibility, summer water is too warm, or parking and public access are not clear at the chosen road or town reach.

Trip notes

Trip notes

Check these before you choose a reach.

Best flows

Use USGS 01152500 at West Claremont as the lower-river anchor, then check rainfall and clarity because upper pockets can differ from the gauge reach.

When to leave

Skip it when the gauge is rising, storm stain reduces visibility, summer water is too warm, or parking and public access are not clear at the chosen road or town reach.

Local plan

Check the West Claremont flow, NH rules, stocking context, and weather, then fish compact dry-dropper or nymph rigs through shaded pockets, undercuts, and riffle tails.

Backup water

If the Sugar is low, warm, muddy, or access-limited, compare Mascoma, Upper Connecticut, or Merrimack depending on whether trout or warmwater fishing fits better.

What to try

Sugar River 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

Sugar River access and rules.

Use these places as starting points. Open the access link below and check posted signs before you park or enter. Check New Hampshire freshwater rules, trout rules, seasons, and stocking updates for the exact Sugar River reach.

West Claremont gauge reach

Primary flow reference before choosing a lower-river plan.

Newport area

Useful middle-river planning with bridge and public/private checks.

Sunapee-area headwater context

Important for understanding upper-river temperature and flow.

The Sugar has town and road access, but public water access is not continuous.

Bridge pull-offs are not always safe or legal parking areas.

Respect posted land and avoid damaging small stream banks.

Compare another river

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

River sources

Official Sugar River 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 is maintained from current regulation, access, flow, weather, and public planning sources so anglers can make better trip decisions than a raw gauge or generic overview would allow.

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 Sugar River answers.

What should I check first before fishing the Sugar River?

Check the USGS West Claremont gauge, rainfall, NH rules, stocking updates, weather, and water temperature.

Are there special fishing rules on the Sugar River?

Use current NH freshwater and trout rules because seasons and stocked-trout details can change.

What flies should I bring for the Sugar River?

Bring the hatch-chart flies, a few confidence nymphs, and a streamer or warmwater box that matches the river's species. Then adjust for water temperature, clarity, and the insects or baitfish you actually see.

Can I wade the Sugar River?

Yes in some reaches at normal flows, but access is patchy and the river can rise quickly after rain.

When should I skip the Sugar River?

Skip it when flows are unsafe, water is too warm for trout, emergency closures are active, or legal access for the reach is not clear.