Spate · Granite · South Bohemia / Šumava

Upper Vltava (Šumava)

Upper Vltava (Šumava) — A Boat

The Vltava rising in the Šumava holds wild brown trout in peaty mountain water.

Marginal · Grayling
F-Fly · Hook 18–22
Marginallive now
Slow going — pick your moments
River dropping into shape after a lift. A short window. Take your time.
55% confidence
What moved it
  • Level0.67 mDropping after lift
  • Water temp15.9°C
  • ClarityVery colouredColouring up
Today's fly
F-Fly
F-FlyHook 18–22
in season · matches water height
Conditions on the water
Live gauge
Level
Steady
0.67 m
lowspate
Water temp15.9°C
ClarityVery coloured
Weather15°C
WindSW 2 km/h
Pressure1017 hPa
Rain · recent0.0 mm
Rain · ahead0.8 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Grayling
Warm — slow
16°C est.ideal 4–14°C
0°14°28°
How to fish it · for Grayling
When
Midday window — grayling feed best from late morning into early afternoon.
Where
Work runs and glides — grayling shoal in the bottom third of the water column.
Method
Tight-line nymph the bottom third with weighted patterns.
Kit
10 ft #3 rod, floating line, long leader to 4 lb fluoro for nymphs.
Why this works
Fair — barometric pressure is working for you, but time of day is the limiting factor today.
Hatch timeline · todayPeak at 6am

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Sub-surface · on the nymphunder the surface

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Beyond the hatch · worth watchingambient prey

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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
Grayling 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
  • Fly-only on many beats
  • Brown trout protected Sep 1–Apr 15.
What's coming
Plan ahead
5-day outlook
Fishing better nearby · 5
Teplá Vltava (Upper Vltava / Warm Vltava)
9.0 km
54
Brown trout · Grayling
Otava
22 km
Brown trout · Grayling
Vydra / Křemelná
22 km
Brown trout
Otava 6 (Private Trophy Section)
27 km
Brown trout
Lipno Reservoir
48 km
Rainbow trout · Pike · Perch
Gallery · 2
  1. Upper Vltava (Šumava) — A Boat
    A Boat
  2. Terrain map of the venue
    Terrain map
About this water

The Vltava rising in the Šumava holds wild brown trout in peaty mountain water. More intimate than the lower regulated sections, quick to respond to rain with good stonefly and caddis hatches. Note: the Teplá Vltava (Warm Vltava) is the separate upper branch famous for autumn grayling — see that entry for the grayling story.

  • Granite
Water quality (WFD)
  • Ecology: Good
  • Chemical: Good

WFD classification · CZHVL_0010

The full read · show the working · for Grayling · confidence 55%
How the 44 is built — score × weight = contribution
Temperature47 × 28%13.2
Flow60 × 22%13.2
Clarity45 × 18%8.1
Feeding Time15 × 13%2.0
Pressure80 × 7%5.6
Insect activity19 × 12%2.3
Conditions total= 44
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Cooler water — back toward the 4–14 °C ideal band — would lift the score and ease welfare.
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
Grayling Playbookgrayling tacticsEuro Nymphingsubsurface methods
Booking & contacts