Freestone · Mixed Sedimentary · Otago, NZ

Greenstone River

Greenstone Valley

The Greenstone is one of the great Southern-Lakes wilderness rivers — a clear, walkable back-country river between Wakatipu and Te Anau holding brown and rainbow trout you spot and stalk in gin-clear flats.

Poor · Brown Trout
Hare & Copper Nymph · 12–16
Closed season
Season reopens 1 November. Try elsewhere.
Closed — confidence not applicable today.
What moved it
  • LevelHeavy rain recentlyNo gauge reading
  • Water temp7.8°C
  • ClarityClear
Today's fly
Hare & Copper Nymph
Hare & Copper Nymph12–16
High-confidence seasonal pick
Conditions on the water
Estimate
Level
Heavy rain recently
No gauge reading
Water temp7.8°C
ClarityClear
Weather7°C
WindW 18 km/h
Pressure1001 hPa
Rain · recent40.4 mm
Rain · ahead2.8 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

How these readings are sourced

Weather-only: no live gauge wired. Clear wilderness river — sight-fishing best on low, clear, stable water with good light.

Water temperature for Brown Trout
Cool — slow
8°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brown Trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 3 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
Records-basedModerate confidence

Based on species-occurrence records, not local invertebrate surveys.

Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
2
2
2
1
1
2
Deleatidium / NZ Mayfly DunHatch
3
3
3
3
2
2
3
3
3
Burrowing Mayfly / Green MayflyHatch
3
2
2
Caddis / SedgeHatch
3
3
3
2
2
3
Cased Caddis / CreeperHatch
3
3
3
2
2
3
3

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Brown Trout fly box
Permits & access
Permit required — see local rules.
  • Otago Fish & Game — a Fish & Game licence is required; back-country reaches typically open 1 November
  • Check the current Anglers Notice
  • Check Clean Dry (didymo present)
  • Public DOC access; tread lightly.
What's coming
Plan ahead
5-day outlook
Gallery · 2
  1. Greenstone Valley
  2. Terrain map of the venue
    Terrain map
About this water

Public DOC access via the Greenstone valley track. It rewards stealth and good light over numbers; fish it lightly and space yourself from other anglers.

Under the surface

The Greenstone threads a broad tussock-and-beech valley between Lake Wakatipu and Lake Te Anau, a clear, gentle wilderness river of long flats and gravel runs walked by the Greenstone valley track. Brown and rainbow trout hold visible in its clear pools — a renowned Southern-Lakes back-country sight fishery.

Wading: Remote valley, cold water, clear water spooks fish — back country care

Hatches & food

Green stonefly, mayfly and caddis nymphs are present throughout the season according to river guides, with a reported November dry-fly window — food presence and angling anecdote rather than a documented adult emergence calendar.

  • River
  • Mixed sedimentary
  • Partly confined
  • Glide
  • Pool riffle
The full read · show the working · for Brown Trout · confidence 75%
How the 0 is built — score × weight = contribution
Temperature62 × 28%17.4
Flow60 × 22%13.2
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity45 × 12%5.4
Conditions total= 66
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
Warmer water — toward the 10–16 °C ideal band — would lift the temperature score.
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 November → 30 April

    Otago Fish & Game licence required. Back-country wilderness — light footprint. Legal status: guidance_not_permission.

Related guides
Fly Fishing on New Zealand's South Islandfeatured in this guideEuro Nymphingsubsurface methods
Booking & contacts
At a glance

Greenstone River is a freestone river in Otago — Lake Wakatipu / Te Anau wilderness (Otago Fish & Game), New Zealand. The catchment geology is recorded as mixed sedimentary, and the water sits at about 350 m above sea level. Species listed for this water: brown trout and rainbow trout. The trout season is recorded as running from 1 November to 30 April. Best window recorded for anglers: November–April; clear low water, good light, prime December–March. Core methods listed: Sight nymphing; Sight dry / dry-dropper; Stalking single fish.