Spate · Granite · South Bohemia / Šumava

Vydra / Křemelná

Vydra / Křemelná — River Vydra, Sumava, Czech Republic
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 3 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

See the full sub-surface read 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
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
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
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