Mayflies
Stoneflies
Caddisflies
Northern Black Forest river with mixed character: riffles and runs and pools. Good caddis hatches in spring and some grayling in the lower sections. The sort of river that rewards attention to weather and light.
- Granite
Rules at a glance
- Licence required
Water temperature for Grayling
Ideal14°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 — time of day is right today, though water temperature could be better.
Likely species
Caddisflies
- Large sedgesMost likelyNearest relative#8–10 · AdultBig waked sedge in the last light and after dark.
- Green SedgeAlso possibleLower confidenceNearest relative#10–12–14–16 · NymphFree-living green caddis larva; fast stony riffles.
- Net-spinning caddisAlso possibleLower confidenceNearest relative#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
- CapererAlso possibleLower confidence#10–12 · AdultBig autumn sedge; fish dry at last light.
Hatch timeline · todayPeak at 2pm
12pm(now) — Heather Fly
Stage: Terrestrials on topApproach: Dry flyActivity: 61%
Also:Reed Smut61%Cinnamon Sedge56%Autumn Dun48%
Peak emergence windowWeather boost11 food groups active
Peak activity at 2pm — Autumn Dun (Autumn Dun, 12 food groups active)
Sub-surface · on the nymphunder the surface
Hatch predictions
Supporters see the full sub-surface read.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 4 as a supporter.
Start free trial14-day free trial. Cancel anytime.
Evidence
Survey-backed · regionalHigh confidence
Backed by regional invertebrate surveys; no sampling on this exact reach yet.
Through the year
0–3 scale · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Grayling seasonSeason
1
2
2
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
Southern Germany only. Trout and grayling in Bavarian meadow streams, alpine creeks and famous upper-river systems.
Hook 14–18 · Fly
in season · matches water height
Permits & access
Permit required — see local rules.
- Black Forest river
- Fischereischein + Erlaubnisschein
- Contact local fishing club.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
Schwarzwald, Murg River Terrain map
About this water
Water quality (WFD)
- Ecology: Poor
- Chemical: Unknown
What this classification means
WFD ecological status Moderate → Poor corrected to EEA WISE 2022 (3rd RBMP) classification for waterbody DERW_DEBW_34-01-OR4 (was a stale earlier-cycle value). Source: EEA WISE SWB_SurfaceWaterBody (discodata.eea.europa.eu), verified 2026-06-18.
WFD classification · DERW_DEBW_34-01-OR4
The full read · show the working · for Grayling · confidence 90%
How the 74 is built — score × weight = contribution
Temperature54 × 28%15.1
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time90 × 13%11.7
Pressure80 × 7%5.6
Insect activity74 × 12%8.9
Conditions total= 74
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.
Directions
Seasons & zones
- Trout 1 March → 30 September
- Grayling 1 May → 31 December
Baden-Württemberg state rule: grayling (Äsche) closed 1 January – 30 April. Open season 1 May – 31 December. Individual fishing association (Fischereiverein) rules may apply. Always check the specific permit.
Season dates are set at state or regional level — confirm the local rules.
Prime sport 1 August → 30 November
Related guides
Booking & contacts
Murg
Northern Black Forest river with mixed character: riffles and runs and pools.
Water temperature for Grayling
Ideal14°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 — time of day is right today, though water temperature could be better.
Likely species
Caddisflies
- Large sedgesMost likelyNearest relative#8–10 · AdultBig waked sedge in the last light and after dark.
- Green SedgeAlso possibleLower confidenceNearest relative#10–12–14–16 · NymphFree-living green caddis larva; fast stony riffles.
- Net-spinning caddisAlso possibleLower confidenceNearest relative#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
- CapererAlso possibleLower confidence#10–12 · AdultBig autumn sedge; fish dry at last light.
Hatch timeline · todayPeak at 2pm
12pm(now) — Heather Fly
Stage: Terrestrials on topApproach: Dry flyActivity: 61%
Also:Reed Smut61%Cinnamon Sedge56%Autumn Dun48%
Peak emergence windowWeather boost11 food groups active
Peak activity at 2pm — Autumn Dun (Autumn Dun, 12 food groups active)
Sub-surface · on the nymphunder the surface
Hatch predictions
Supporters see the full sub-surface read.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 4 as a supporter.
Start free trial14-day free trial. Cancel anytime.
Evidence
Survey-backed · regionalHigh confidence
Backed by regional invertebrate surveys; no sampling on this exact reach yet.
Through the year
0–3 scale · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
Grayling seasonSeason
1
2
2
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
Southern Germany only. Trout and grayling in Bavarian meadow streams, alpine creeks and famous upper-river systems.
Hook 14–18 · Fly
in season · matches water height
Permits & access
Permit required — see local rules.
- Black Forest river
- Fischereischein + Erlaubnisschein
- Contact local fishing club.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
Schwarzwald, Murg River Terrain map
About this water
Northern Black Forest river with mixed character: riffles and runs and pools. Good caddis hatches in spring and some grayling in the lower sections. The sort of river that rewards attention to weather and light.
- Granite
Water quality (WFD)
- Ecology: Poor
- Chemical: Unknown
What this classification means
WFD ecological status Moderate → Poor corrected to EEA WISE 2022 (3rd RBMP) classification for waterbody DERW_DEBW_34-01-OR4 (was a stale earlier-cycle value). Source: EEA WISE SWB_SurfaceWaterBody (discodata.eea.europa.eu), verified 2026-06-18.
WFD classification · DERW_DEBW_34-01-OR4
The full read · show the working · for Grayling · confidence 90%
How the 74 is built — score × weight = contribution
Temperature54 × 28%15.1
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time90 × 13%11.7
Pressure80 × 7%5.6
Insect activity74 × 12%8.9
Conditions total= 74
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.
Directions
Seasons & zones
- Trout 1 March → 30 September
- Grayling 1 May → 31 December
Baden-Württemberg state rule: grayling (Äsche) closed 1 January – 30 April. Open season 1 May – 31 December. Individual fishing association (Fischereiverein) rules may apply. Always check the specific permit.
Season dates are set at state or regional level — confirm the local rules.
Prime sport 1 August → 30 November
Related guides
Booking & contacts