Freestone · Granite · Zhejiang, CN

Huyuan Stream 壶源溪

Huyuan Stream 壶源溪 terrain map
Poor · Makou
Pheasant Tail Nymph · Hook 16–20, unweighted
Poorlive now
Not the day for it
Low and clear — careful approach country. A morning for the obvious fish only.
50% confidence
What moved it
  • LevelLight rain recentlyNo gauge reading
  • Water temp12.2°C
  • ClarityClear
Today's fly
Pheasant Tail Nymph
Pheasant Tail NymphHook 16–20, unweighted
in season · matches water height
Conditions on the water
Estimate
Level
Light rain recently
No gauge reading
Water temp12.2°C
ClarityClear
Weather25°C
WindS 10 km/h
Pressure1019 hPa
Rain · recent3.5 mm
Rain · ahead0.3 mm

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

Water temperature for Makou
Too cold
12°C est.ideal 20–26°C
0°14°28°
How to fish it · for Makou
When
May to October, the local golden season for stream fishing / 5月至10月,当地公认的溪钓黄金期
Where
A hill stream running down from Huyuan township to Chang'an in the Fuyang district of Hangzhou, and on into Zhuji.
Why this works
Very poor — water clarity is working for you, but water temperature is the limiting factor today.
Sub-surface · on the nymphunder the surface

Hatch predictions

Supporters see the full sub-surface read.

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Evidence
Records-basedModerate confidence

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

Ranked for today
Fly box · Makou
Permits & access
Permit required — see local rules.
  • Both counties it runs through publish the same rule: 壶源江(壶源溪)is closed 1 March – 30 June to every method EXCEPT 娱乐性游钓 — recreational angling is explicitly exempt, so this water is effectively fishable year-round
  • Zhejiang's own guidance adds one rod, one line, no more than two hook points, and names its no-angling zones as cross-river bridges and Grade 1 drinking-water source protection areas
  • No germplasm reserve or water-source designation was found on this stream, but confirm locally
What's coming
Plan ahead
5-day outlook
Other water nearby · 3
Conservation note

⭐ None of these fish is protected, which is what makes this water unusual in China. 马口 (*Opsariichthys bidens*) is now **scored** — the first Asian cyprinid with an engine profile, riding the flow-cyprinid lane on aquaculture-derived thermal bands (ideal 20–26°C). 溪石斑 (光唇鱼, *Acrossocheilus*), 宽鳍鱲 and 长鳍鱲 (*Zacco*) and the occasional 鳜鱼 (mandarin fish) remain prose-only: they have no profile of their own, and borrowing makou's — let alone the European `barbel` curve — would be the false precision this pack refuses. / ⭐ 此处鱼种均非保护物种,这在中国颇为难得。马口(*Opsariichthys bidens*)现已纳入计分——它是首个具备引擎模型的亚洲鲤科鱼类,使用流水鲤科通道与源自养殖文献的温度区间(最适20–26℃)。溪石斑(光唇鱼)、宽鳍鱲、长鳍鱲及偶见的鳜鱼仍仅作文字说明:它们没有各自的模型,若套用马口的模型(更遑论欧洲鲃鱼的温度曲线),正是本册所拒绝的伪精确。

The full read · show the working · for Makou · confidence 50%
How the 0 is built — score × weight = contribution
Temperature0 × 30%0.0
Flow60 × 25%15.0
Clarity95 × 20%19.0
Feeding Time40 × 15%6.0
Pressure75 × 10%7.5
Limiting factor: Water temperature (12.2°C) is outside Makou's preferred range (20–26°C)= 48
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 20–26 °C ideal band — would lift the temperature score.
The dawn and dusk windows score higher than the midday lull.
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