Freestone · Mixed Sedimentary · Otago, NZ

Greenstone River

Greenstone Valley
Poor · Brown Trout
Hare & Copper Nymph · 12-16
Closed season
Season reopens 1 November. Try elsewhere.
Closed — confidence not applicable today.
What moved it
  • LevelDry recentlyNo gauge reading
  • Water temp10.0°C
  • ClarityClear
Today's fly
Hare & Copper Nymph
Hare & Copper Nymph12-16
High-confidence seasonal pick
Conditions on the water
Estimate
Level
Dry recently
No gauge reading
Water temp10.0°C
ClarityClear
Weather7°C
WindNW 6 km/h
Pressure1025 hPa
Rain · recent0.2 mm
Rain · ahead40.2 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
Ideal
10°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 · todayPeak at 10h

Hatch predictions

Today's headline hatch shown — see all 3 active hatches hour by hour as a supporter.

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14-day free trial. Cancel anytime.

Sub-surface · on the nymphunder the surface

Hatch predictions

Supporters see the full sub-surface read.

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14-day free trial. Cancel anytime.

Evidence
Records-basedModerate confidence

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

Through the year
0–3 scale · September 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
Fly box · Brown Trout
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
The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow60 × 22%13.2
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity55 × 12%6.6
Conditions total= 80
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
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
Euro Nymphingsubsurface methods
Booking & contacts