Gammarids
Flows through the spa region near Karlovy Vary with mixed character — riffles, pools and longer glides offering varied fly fishing opportunities. A river with enough scale and diversity to sustain genuine fishing interest.
- Mixed
Rules at a glance
- Licence required
Water temperature for Grayling
Ideal6°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 insect activity is the limiting factor today. Grayling feeds actively in cold water — peak winter sport.
Likely species
Hatch timeline · tomorrowPeak at 11am
12pm(now) — Autumn Needle Fly
Stage: Creeping nymphsApproach: Heavy nymphActivity: 29%
Also:Black Midge25%
Peak emergence window3 food groups active
Peak activity at 11am — Autumn Needle Fly (Autumn Needle Fly, Peak emergence window)
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 2 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
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
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
2
2
2
2
1
Blue Winged OliveHatch
1
2
2
2
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.
Hook 14–18 · Fly
in season
Permits & access
Permit required — see local rules.
- State licence + local permit
- Brown trout protected Sep 1–Apr 15.
What's coming
Plan ahead
5-day outlook
Gallery · 2
Ohře Terrain map
About this water
Water quality (WFD)
- Ecology: Moderate
- Chemical: Good
WFD classification · CZOHL_0500
The full read · show the working · for Grayling · confidence 50%
How the 71 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow40 × 22%8.8
Clarity85 × 18%15.3
Feeding Time90 × 13%11.7
Pressure80 × 7%5.6
Insect activity16 × 12%1.9
Conditions total= 71
Can you trust it?
Water temperaturelive gauge readinggauge
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
Directions
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
Booking & contacts
Ohře
Major western Bohemian river, brown trout and grayling with some rainbow trout.
Water temperature for Grayling
Ideal6°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 insect activity is the limiting factor today. Grayling feeds actively in cold water — peak winter sport.
Likely species
Hatch timeline · tomorrowPeak at 11am
12pm(now) — Autumn Needle Fly
Stage: Creeping nymphsApproach: Heavy nymphActivity: 29%
Also:Black Midge25%
Peak emergence window3 food groups active
Peak activity at 11am — Autumn Needle Fly (Autumn Needle Fly, Peak emergence window)
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 2 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
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
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
2
2
2
2
1
Blue Winged OliveHatch
1
2
2
2
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.
Hook 14–18 · Fly
in season
Permits & access
Permit required — see local rules.
- State licence + local permit
- Brown trout protected Sep 1–Apr 15.
What's coming
Plan ahead
5-day outlook
Gallery · 2
Ohře Terrain map
About this water
Flows through the spa region near Karlovy Vary with mixed character — riffles, pools and longer glides offering varied fly fishing opportunities. A river with enough scale and diversity to sustain genuine fishing interest.
- Mixed
Water quality (WFD)
- Ecology: Moderate
- Chemical: Good
WFD classification · CZOHL_0500
The full read · show the working · for Grayling · confidence 50%
How the 71 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow40 × 22%8.8
Clarity85 × 18%15.3
Feeding Time90 × 13%11.7
Pressure80 × 7%5.6
Insect activity16 × 12%1.9
Conditions total= 71
Can you trust it?
Water temperaturelive gauge readinggauge
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
Directions
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
Booking & contacts
At a glance
Ohře is a freestone river in West Bohemia / Karlovy Vary, Czech Republic. It sits at about 375 m above sea level. The river is described as roughly 316 km long. Our data lists brown trout, rainbow trout and grayling here. 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. 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.