Spate · Granite · North Bohemia / Liberec, CZ

Jizera

Jizera v Turnově

A long trout and grayling river in the Giant Mountains area, offering more than 50 km of trout and grayling fishing.

Good · Grayling
Pink Grayling Bug · Hook 16
Goodlive now
A proper day on the water
River steady at a fishable height. A proper day for it. Work the seams with an upstream nymph, switch to the dry when they show.
75% confidence
What moved it
  • Level1.14 mLast reading 13 min ago
  • Water temp5.5°C
  • ClarityClear
Today's fly
Pink Grayling Bug
Pink Grayling BugHook 16
in season · all-rounder
Conditions on the water
Live gauge
Level
Steady
1.14 m
lowspate
Water temp5.5°C
ClarityClear
Weather0°C
WindSW 9 km/h
Pressure1021 hPa
Rain · recent2.3 mm
Rain · ahead0.3 mm

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

Water temperature for Grayling
Ideal
5.5°Cideal 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 insect activity is the limiting factor today. Grayling feeds actively in cold water — peak winter sport.
Likely species
Gammarids
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 2 active hatches hour by hour as a supporter.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 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
March BrownHatch
2
3
2
Late March BrownHatch
2
3
2
Large Brook DunHatch
2
3
2
Large StoneflyHatch
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.

Small Perdigón
Small Perdigón
Hook 14–18 · Fly
in season
Permits & access
Permit required — see local rules.
  • State licence + local permit
  • Brown trout protected Sep 1–Apr 15
  • Grayling protected Dec 1–Jun 15.
What's coming
Plan ahead
5-day outlook
Gallery · 2
  1. Jizera v Turnově
  2. Terrain map of the venue
    Terrain map
About this water

One of the more substantial destination-style river systems rather than just a short club stretch. Brown trout and introduced rainbow trout in fast mountain water over granite bedrock. Good pocket water and Czech nymphing territory — consistent sport in lovely water, best in spring and autumn.

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

WFD classification · CZHSL_1820

The full read · show the working · for Grayling · confidence 75%
How the 77 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity23 × 12%2.8
Conditions total= 77
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
Fly Fishing in Poland and the Czech Republicfeatured in this guideGrayling Playbookgrayling tacticsEuro Nymphingsubsurface methods
Booking & contacts
At a glance

Jizera is a spate river in North Bohemia / Liberec, Czech Republic. The catchment geology is recorded as granite, and the water sits at about 253 m above sea level. The river is described as roughly 164 km long. Species listed for this water: brown trout, rainbow 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.