Tailwater · Mixed Sedimentary · Canterbury / Otago border, NZ

Waitaki River

Waitaki River — Waitaki River | New Zealand
Good · Brown Trout
Hare & Copper Nymph · 12-16
Goodlive now
A proper day on the water
Low and clear — careful approach country. Stay small, stay accurate.
75% confidence
What moved it
  • Flow203.6 cumecsLast reading 17h ago
  • Water temp11.5°C
  • ClarityClear
Today's fly
Hare & Copper Nymph
Hare & Copper Nymph12-16
High-confidence seasonal pick
Conditions on the water
Live gauge
Flow
Steady
203.6 cumecs
Last reading 17h ago
Water temp11.5°C
ClarityClear
Weather17°C
WindNW 13 km/h
Pressure1020 hPa
Rain · recent0.5 mm
Rain · ahead23.6 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

How these readings are sourced

Weather-only: no live gauge wired. Dam-controlled below the Waitaki hydro lakes — steadier and clearer than a free glacial river, but watch for hydro-driven level changes.

Water temperature for Brown Trout
Ideal
12°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.
Why this works
Good — water temperature is working for you, but insect activity is the limiting factor today.
Hatch timeline · todayPeak at 17:00

Hatch predictions

Today's headline hatch shown — see all 7 active hatches hour by hour as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 3 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 · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Deleatidium / NZ Mayfly DunHatch
3
3
3
3
2
2
3
3
3
Large Dark MayflyHatch
3
3
2
2
3
Burrowing Mayfly / Green MayflyHatch
3
2
2

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.
  • Central South Island Fish & Game region — a Fish & Game licence is required
  • ⚠️ SEA-RUN SALMON: for 2025/26 the SEASON bag limit is ONE fish — keep one salmon and your salmon season ends, or release all season
  • Rules change annually; verify before fishing
  • Beware dam-controlled flow changes
  • Check the current Anglers Notice
  • Check Clean Dry (didymo present).
What's coming
Plan ahead
5-day outlook
Other water nearby · 1
Ahuriri River
60 km
0
Brown trout · Rainbow trout
Gallery · 2
  1. Waitaki River — Waitaki River | New Zealand
    Waitaki River | New Zealand
  2. Terrain map of the venue
    Terrain map
The full read · show the working · for Brown Trout · confidence 75%
How the 76 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity22 × 12%2.6
Conditions total= 76
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout year-round (lower) / 1 October (trout); salmon season roughly 1 November–30 April (verify) → year-round / salmon end-April

    Central South Island Fish & Game licence required. ⚠️ Sea-run salmon ONE-fish SEASON limit (2025/26) — conservation-first, verify annually. Dam-controlled flows — safety note. Legal status: guidance_not_permission.

Related guides
Euro Nymphingsubsurface methods
Booking & contacts