Spate · Granite · South Bohemia / Šumava

Vydra / Křemelná

Vydra / Křemelná — River Vydra, Sumava, Czech Republic

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

Good · Brown Trout
Czech Nymph · 10-14
Goodlive now
A proper day on the water
River dropping into shape after a lift. Fishing well — get there before it drops out.
75% confidence
What moved it
  • Level0.25 mDropping after lift
  • Water temp15.6°C
  • ClarityClear
Today's fly
Czech Nymph
Czech Nymph10-14
Euro-nymph
Conditions on the water
Live gauge
Level
Steady
0.25 m
lowspate
Water temp15.6°C
ClarityClear
Weather13°C
WindSE 8 km/h
Pressure1026 hPa
Rain · recent0.0 mm
Rain · ahead0.0 mm

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

Water temperature for Brown Trout
Ideal
15.6°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.
Why this works
Good — water temperature is working for you, but insect activity is the limiting factor today.
Hatch timeline · todayPeak at 6am

Hatch predictions

Today's headline hatch shown — see all 2 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

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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 · August highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
1
Grayling seasonSeason
1
2
2
2
2
1
March BrownHatch
2
3
2
GrannomHatch
2
2
Large StoneflyHatch
2
3
2
Yellow SallyHatch
2
3
2

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
Upper Vltava (Šumava)
22 km
Brown trout · Grayling
Teplá Vltava (Upper Vltava / Warm Vltava)
22 km
38
Brown trout · Grayling
Otava
28 km
Brown trout · Grayling
Otava 6 (Private Trophy Section)
33 km
Brown trout
Lipno Reservoir
68 km
Rainbow trout · Pike · Perch
Gallery · 2
  1. Vydra / Křemelná — River Vydra, Sumava, Czech Republic
    River Vydra, Sumava, Czech Republic
  2. Terrain map of the venue
    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 72 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow40 × 22%8.8
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity40 × 12%4.8
Conditions total= 72
Can you trust it?
Water temperaturelive gauge readinggauge
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle 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