Spate · Granite · South Bohemia / Šumava, CZ

Vydra / Křemelná

Wild mountain streams in the heart of the Šumava National Park, brown trout in pristine boulder-strewn water.

River Vydra, Sumava, Czech Republic

vigour - CC BY

Closed season

Out of season. Try elsewhere.

Closed — confidence not applicable today.

Notify when prime

What moved it

Level0.25 mLast reading 17h ago
Water temp9.6°C
ClarityClear

Today's fly

Parachute Adams14-18

Upstream dry

Rules at a glance

Licence required

Live now

Conditions on the water

Live gauge

Trends shown where the gauge supports them

Level

Steady

0.25 m

lowspate

Water temp

9.6°C

coldwarm

Clarity

Clear

Weather

10°C

Clear

Wind

SE 7 km/h

calmblown out

Pressure

1024 hPa

lowhigh

Rain · recent

0.0 mm

dryspate risk

Rain · ahead

0.0 mm

dryspate risk

Live readings only. Trends shown where the gauge supports them.

Water temperature for Brown Trout

Cool — slow

9.6°Cideal 10–16°C

0°14°28°

How to fish it · for Brown Trout

When

Nymphing can work through most of the day.

Where

Cover mixed depths.

Method

Start with tight-line nymphs and adjust if fish rise or drift higher.

Kit

9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.

Likely species

Mayflies

Angler's CurseMost likelyLower confidenceNearest relative
#20–22 · Spinner
Go tiny: 20-22 spent spinner, single fly, long tippet.

Stoneflies

Autumn Needle FlyMost likelyLower confidenceNearest relative
#16–18 · Adult
Small slender stonefly of clean, cold riffles in autumn.

Caddisflies

Large sedgesMost likelyNearest relative
#8–10 · Adult
Big waked sedge in the last light and after dark.
Green SedgeAlso possibleLower confidenceNearest relative
#10–12–14–16 · Nymph
Free-living green caddis larva; fast stony riffles.
Net-spinning caddisAlso possibleLower confidenceNearest relative
#12–14–16 · Pupa
Widespread riffle net-spinner; evening emergence.
CapererAlso possibleLower confidence
#10–12 · Adult
Big autumn sedge; fish dry at last light.

Damselflies & dragonflies

DamselfliesMost likelyNearest relative
#10–12 · Nymph
Slow-retrieve a damsel nymph along the weed edges.

Gammarids

Freshwater shrimpMost likelyLower confidenceNearest relative
#10–14 · Adult
No hatch? Dead-drift a shrimp deep — the year-round standby.

Hatch timeline · todayPeak at 11am

Hatch predictions

Today's headline hatch shown — see all 10 active hatches hour by hour as a supporter.

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14-day free trial. Cancel anytime.

Sub-surface · on the nymphunder the surface

Hatch predictions

Supporters see the full sub-surface read.

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14-day free trial. Cancel anytime.

Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Supporters see what else is on the menu.

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Evidence

Survey-backed · regionalModerate confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

Through the year

0–3 scale · September highlighted

Trout season

Grayling season

March Brown

Late March Brown

Large Brook Dun

Large Stonefly

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today

Brown Trout fly box

The most distinct national style here: Czech nymphing first, with short-line teams of 2 or 3 weighted nymphs central to trout and grayling fishing in fast rivers.

Permits & access

Permit required — see local rules.

State licence + local permit.

What's coming

Plan ahead

5-day outlook

Other water nearby · 5

Gallery · 2

River Vydra, Sumava, Czech Republic
Terrain map

About this water

Wild mountain streams in the heart of the Šumava National Park, brown trout in pristine boulder-strewn water. Some sections in the national park core zone are catch-and-release or closed. Intimate pocket water fishing where solitude and clarity matter as much as the fish.

Granite

The full read · show the working · for Brown Trout · confidence 75%

How the 0 is built — score × weight = contribution

Temperature93 × 28%26.0

Flow40 × 22%8.8

Clarity95 × 18%17.1

Feeding Time85 × 13%11.1

Pressure80 × 7%5.6

Insect activity42 × 12%5.0

Conditions total= 74

Can you trust it?

Water temperaturelive gauge readinggauge

Level / flowon-river gaugeobserved

Prey activitysurvey-backed invertebrate datasurvey

Directions

Apple Maps Google Maps

Seasons & zones

Trout 16 April → 31 August
Grayling 16 June → 30 November
Czech national rule: grayling (lipan podhorní) protected 1 December – 15 June. Open window is 16 June – 30 November. Czech Anglers Union (ČRS) salmonid fisheries also have method and access rules — check the local ČRS district permit for specific conditions.
Closed in spring for spawning.
Prime sport 1 September → 30 November

Related guides

Euro Nymphingsubsurface methods

Booking & contacts

Spate · Granite · South Bohemia / Šumava, CZ

Vydra / Křemelná

Contributor photo

River Vydra, Sumava, Czech Republic

vigour - CC BY

Wild mountain streams in the heart of the Šumava National Park, brown trout in pristine boulder-strewn water.

Poor · Brown Trout

Parachute Adams · 14-18

Closed season

Out of season. Try elsewhere.

Closed — confidence not applicable today.

Notify when prime

What moved it

Level0.25 mLast reading 17h ago
Water temp9.6°C
ClarityClear

Today's fly

Parachute Adams14-18

Upstream dry

Conditions on the water

Live gauge

Level

Steady

0.25 m

lowspate

Water temp9.6°C

ClarityClear

Weather10°C

WindSE 7 km/h

Pressure1024 hPa

Rain · recent0.0 mm

Rain · ahead0.0 mm

Live readings only. Trends shown where the gauge supports them.

Water temperature for Brown Trout

Cool — slow

9.6°Cideal 10–16°C

0°14°28°

How to fish it · for Brown Trout

When

Nymphing can work through most of the day.

Where

Cover mixed depths.

Method

Start with tight-line nymphs and adjust if fish rise or drift higher.

Kit

9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.

Likely species

Mayflies

Angler's CurseMost likelyLower confidenceNearest relative
#20–22 · Spinner
Go tiny: 20-22 spent spinner, single fly, long tippet.

Stoneflies

Autumn Needle FlyMost likelyLower confidenceNearest relative
#16–18 · Adult
Small slender stonefly of clean, cold riffles in autumn.

Caddisflies

Large sedgesMost likelyNearest relative
#8–10 · Adult
Big waked sedge in the last light and after dark.
Green SedgeAlso possibleLower confidenceNearest relative
#10–12–14–16 · Nymph
Free-living green caddis larva; fast stony riffles.
Net-spinning caddisAlso possibleLower confidenceNearest relative
#12–14–16 · Pupa
Widespread riffle net-spinner; evening emergence.
CapererAlso possibleLower confidence
#10–12 · Adult
Big autumn sedge; fish dry at last light.

Damselflies & dragonflies

DamselfliesMost likelyNearest relative
#10–12 · Nymph
Slow-retrieve a damsel nymph along the weed edges.

Gammarids

Freshwater shrimpMost likelyLower confidenceNearest relative
#10–14 · Adult
No hatch? Dead-drift a shrimp deep — the year-round standby.

Hatch timeline · todayPeak at 11am

Hatch predictions

Today's headline hatch shown — see all 10 active hatches hour by hour as a supporter.

Start free trial

14-day free trial. Cancel anytime.

Sub-surface · on the nymphunder the surface

Hatch predictions

Supporters see the full sub-surface read.

Start free trial

14-day free trial. Cancel anytime.

Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Supporters see what else is on the menu.

Start free trial

14-day free trial. Cancel anytime.

Evidence

Survey-backed · regionalModerate confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

Through the year

0–3 scale · September highlighted

Trout season

Grayling season

March Brown

Late March Brown

Large Brook Dun

Large Stonefly

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today

Brown Trout fly box

The most distinct national style here: Czech nymphing first, with short-line teams of 2 or 3 weighted nymphs central to trout and grayling fishing in fast rivers.

Permits & access

Permit required — see local rules.

State licence + local permit.

What's coming

Plan ahead

5-day outlook

Other water nearby · 5

Teplá Vltava (Upper Vltava / Warm Vltava)

22 km

Brown trout · Grayling

Otava

28 km

Brown trout · Grayling

Otava 6 (Private Trophy Section)

33 km

Brown trout

Upper Vltava (Šumava)

22 km

Brown trout · Grayling

Lipno Reservoir

68 km

Rainbow trout · Pike · Perch

Gallery · 2

River Vydra, Sumava, Czech Republic
Terrain map

About this water

Granite

The full read · show the working · for Brown Trout · confidence 75%

How the 0 is built — score × weight = contribution

Temperature93 × 28%26.0

Flow40 × 22%8.8

Clarity95 × 18%17.1

Feeding Time85 × 13%11.1

Pressure80 × 7%5.6

Insect activity42 × 12%5.0

Conditions total= 74

Can you trust it?

Water temperaturelive gauge readinggauge

Level / flowon-river gaugeobserved

Prey activitysurvey-backed invertebrate datasurvey

Directions

Apple Maps Google Maps

Seasons & zones

Trout 16 April → 31 August
Grayling 16 June → 30 November
Czech national rule: grayling (lipan podhorní) protected 1 December – 15 June. Open window is 16 June – 30 November. Czech Anglers Union (ČRS) salmonid fisheries also have method and access rules — check the local ČRS district permit for specific conditions.
Closed in spring for spawning.
Prime sport 1 September → 30 November

Related guides

Euro Nymphingsubsurface methods

Booking & contacts