Freestone · Limestone · Bavaria / Garmisch-Partenkirchen, DE

Loisach

Photo of Loisach

One of Bavaria's best fly-fishing spots — high-quality trout and grayling water near Garmisch-Partenkirchen.

Good · Grayling
Pink Grayling Bug · Hook 16
Goodlive now
A proper day on the water
Low and clear — careful approach country. Stay small, stay accurate.
75% confidence
What moved it
  • LevelProxyvia Noce
  • Water temp7.0°C
  • ClarityClear
Today's fly
Pink Grayling Bug
Pink Grayling BugHook 16
in season · all-rounder
Conditions on the water
Proxy gauge
Level
Steady
Proxy
via Noce
Water temp7.0°C
ClarityClear
Weather-2°C
WindS 6 km/h
Pressure1021 hPa
Rain · recent8.8 mm
Rain · ahead0.0 mm

No gauge on this water — conditions are inferred from Noce. The trend transfers, the absolute level does not.

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 insect activity is the limiting factor today. Grayling feeds actively in cold water — peak winter sport.
Likely species
Mayflies
Gammarids
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 5 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 4 guilds as a supporter.

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Evidence
Survey-backed · regionalHigh 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
2
2
1
Grayling seasonSeason
1
2
2
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

Southern Germany only. Trout and grayling in Bavarian meadow streams, alpine creeks and famous upper-river systems.

Small Perdigón
Small Perdigón
Hook 14–18 · Fly
in season
Permits & access
Permit required — see local rules.
  • Upper Bavarian river
  • Fischereischein + Erlaubnisschein required.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Loisach — Hotel Bavaria Garmisch fly water
1.0 km
74
Brown trout · Rainbow trout · Grayling
Eibsee
10 km
Brown trout · Lake trout · Char
Upper Ammer
10 km
71
Brown trout · Grayling
Leutascher Ache
15 km
Brown trout
Walchensee
22 km
Brown trout · Lake trout · Char
Gallery · 2
  1. Photo of Loisach
    Loisach
  2. Terrain map of the venue
    Terrain map
About this water

Strict fly-only and removal rules. Clear alpine limestone water with a proper mountain feel. Access is tightly controlled through local fishing rights — enquire well in advance. A reminder that German access is often restrictive, but the quality justifies the effort.

  • Limestone
Water quality (WFD)
  • Ecology: Moderate
  • Chemical: Unknown

WFD classification · DERW_DEBY_1_F391

The full read · show the working · for Grayling · confidence 75%
How the 79 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 activity42 × 12%5.0
Conditions total= 79
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Noceproxy
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 1 March → 30 September
  • Grayling 1 May → 31 December

    Bavaria state rule: grayling (Äsche) closed 1 January – 30 April, minimum size 35 cm. Open season 1 May – 31 December. Individual fishery/Hegering may impose stricter rules or shorter access. Always check the specific permit (Fischereischein + Fischereiberechtigung). C&R recommended on classified trout/grayling waters.

    Season dates are set at state or regional level — confirm the local rules.

    Prime sport 1 August → 30 November

Related guides
Fly Fishing in Bavaria and the Black Forestfeatured in this guideGrayling Playbookgrayling tacticsEuro Nymphingsubsurface methods
Booking & contacts
At a glance

Loisach is a freestone river in Bavaria / Garmisch-Partenkirchen, Germany. The catchment geology is recorded as limestone, and the water sits at about 695 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 1 March to 30 September. The grayling season is recorded as running from 1 May to 31 December. Best window recorded for anglers: April–September. Core methods listed: nymph; dry fly; streamer. 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 Loisach — Hotel Bavaria Garmisch fly water at 1.0 km, Eibsee at 10 km and Upper Ammer at 10 km.