Freestone · Granite · South Bohemia / Šumava, CZ

Otava

Otava — File:View to Písek from Otava River (1).JPG

One of the major trout and grayling rivers in Šumava / South-West Bohemia, with about 30 km of fishable salmonid sections.

Fair · Grayling
Pink Grayling Bug · Hook 16
Fairlive now
A side-water session, not the main event
River dropping into shape after a lift. Worth a few hours before it drops away.
50% confidence
What moved it
  • Level0.48 mDropping after lift
  • Water temp6.7°C
  • ClarityColouredColouring up
Today's fly
Pink Grayling Bug
Pink Grayling BugHook 16
in season · all-rounder
Conditions on the water
Live gauge
Level
Steady
0.48 m
lowspate
Water temp6.7°C
ClarityColoured
Weather3°C
WindNW 14 km/h
Pressure1002 hPa
Rain · recent6.6 mm
Rain · ahead0.0 mm

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

Water temperature for Grayling
Ideal
7°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
Good — water temperature is working for you, but time of day is the limiting factor today. Grayling feeds actively in cold water — peak winter sport.
Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds as a supporter.

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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 · November 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
Freshwater ShrimpHatch
2
3
3
3
3
3
3
3
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Autumn OliveHatch
1
2
1

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.

Small Perdigón
Small Perdigón
Hook 14–18 · Fly
in season
Permits & access
Permit required — see local rules.
  • State licence + local permit
  • Multiple quality sections with fly-only rule
  • Brown trout protected Sep 1–Apr 15
  • Grayling protected Dec 1–Jun 15.
What's coming
Plan ahead
5-day outlook
Fishing better nearby · 5
Teplá Vltava (Upper Vltava / Warm Vltava)
39 km
72
Brown trout · Grayling
Blanice
17 km
68
Brown trout · Grayling
Otava 6 (Private Trophy Section)
4.0 km
Brown trout
Vydra / Křemelná
35 km
Brown trout
Orlík Reservoir
36 km
Rainbow trout · Carp · Pike
Gallery · 2
  1. Otava — File:View to Písek from Otava River (1).JPG
    File:View to Písek from Otava River (1).JPG
  2. Terrain map of the venue
    Terrain map
About this water

The last salmonid stretches are predominantly grayling with some brown trout, while upper sections hold more trout. Mixed pools and riffles with character varying stretch to stretch. Methods range from dry and wet fly to nymphs and streamers. CzechNymph describes it as the most significant western Šumava fly river.

  • Granite
Water quality (WFD)
  • Ecology: Moderate
  • Chemical: Failing to achieve good

WFD classification · CZHVL_1250

The full read · show the working · for Grayling · confidence 50%
How the 63 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow40 × 22%8.8
Clarity70 × 18%12.6
Feeding Time15 × 13%2.0
Pressure80 × 7%5.6
Insect activity50 × 12%6.0
Conditions total= 63
Can you trust it?
Water temperatureair-to-water estimateestimated
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
Fly Fishing in Poland and the Czech Republicfeatured in this guideGrayling Playbookgrayling tacticsEuro Nymphingsubsurface methods
Booking & contacts
At a glance

Otava is a freestone river in South Bohemia / Šumava, Czech Republic. The catchment geology is recorded as granite, and the water sits at about 389 m above sea level. The river is described as roughly 113 km long. Species listed for this water: brown trout and grayling. The trout season is recorded as running from 16 April to 31 August. The grayling season is recorded as running from 16 June to 30 November. Best window recorded for anglers: May–August (trout); September–November (grayling). Core methods listed: Upstream nymph; Dry fly; Small wet. Level and flow data for this water is linked from 1 gauge. Its Water Framework Directive ecological status is recorded as moderate. Nearby waters in our listings include Otava 6 (Private Trophy Section) at 4.0 km, Blanice at 17 km and Vydra / Křemelná at 35 km.