Freestone · Mixed · Eastern Sierra

Robinson Creek / Twin Lakes (Bridgeport)

Robinson Creek / Twin Lakes (Bridgeport) terrain map

Robinson Creek and the Twin Lakes country above Bridgeport are the classic Eastern Sierra mountain-fishing scene — a freestone creek tumbling out of the Twin Lakes through the Hoover Wilderness gateway, with the lakes themselves famous for the occasional outsized brown that prowls up from deep water.

Marginal · Brown Trout
Parachute Adams · 12-18
Marginallive now
Slow going — pick your moments
River temperature is the limiting factor today, not the flow. Fish dawn or dusk if you go at all, and handle everything with extra care.
80% confidence
What moved it
  • Level0.77 mLast reading 1d ago
  • Water temp19.5°C
  • ClarityClear
Today's fly
Parachute Adams
Parachute Adams12-18
High-confidence seasonal pick
Conditions on the water
Live gauge
Level
Steady
0.77 m
Last reading 1d ago
Water temp19.5°C
ClarityClear
Weather22°C
WindSW 12 km/h
Pressure1016 hPa
Rain · recent0.0 mm
Rain · ahead6.8 mm

Live readings — water temperature is an estimate where the gauge does not record it.

Water temperature for Brown Trout
Warm — slow
20°C est.ideal 1016°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
Water at 19.5°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 4 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

See the full sub-surface read with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 2 with Pro.

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Evidence
ModelledModerate confidence

Modelled from regional ecology — no survey or occurrence data for this water yet.

Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
2
1
Western Green DrakeHatch
2
2
Flav (Small Western Green Drake)Hatch
2
3
2
Mahogany DunHatch
2
2
American March BrownHatch
2
3
2

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.
  • General-season trout water (~late April–mid-November); creek and Twin Lakes rules/openers may differ — verify against current CDFW
  • TEMPERATURE: no live USGS water temp at 10290500 — temperature is estimated, not measured.
What's coming
Plan ahead
5-day outlook
Cooler water nearby · 1
Water here around 20°C — probably warm enough to stress Brown Trout . These are likely cooler.
About this water

Robinson Creek and the Twin Lakes country above Bridgeport are the classic Eastern Sierra mountain-fishing scene — a freestone creek tumbling out of the Twin Lakes through the Hoover Wilderness gateway, with the lakes themselves famous for the occasional outsized brown that prowls up from deep water. The creek fishes as a pretty pocket-water stream of wild and stocked browns and rainbows below the outlet, easy and accessible from the campgrounds, while the lakes are a stillwater story of their own. Being fed off the lakes the creek runs a touch steadier than a pure snowmelt freestone, but it still answers to the runoff: high and pushy in the peak melt, dropping into prime shape through summer. Fish attractors and droppers in the creek's pockets, time it for the drop after runoff, and keep half an eye on Twin Lakes for the trophy brown the area's known for.

  • Mixed
Water quality · US Clean Water Act
  • Aquatic lifeNot assessed
  • RecreationImpaired
What this classification means

Recreation: Bacteria/pathogen advisory — mind wading cuts and immersion.

EPA ATTAINS assessment unit 'Robinson Creek (Twin Lakes to Hwy 395)' (CAR6303005020020117085757), 2024 Integrated Report. Aquatic Life use: not assessed. Listed impairment causes: Pathogens. This is a Clean Water Act assessment-unit classification (the US analogue of WFD), not a live reading.

Status is for the Clean Water Act assessment unit covering this reach.

EPA ATTAINS (Clean Water Act) · CAR6303005020020117085757

The full read · show the working · for Brown Trout · confidence 80%
How the 31 is built — score × weight = contribution
Temperature32 × 28%9.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity63 × 12%7.6
Conditions total= 62
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
  • TroutLast Saturday in April15 November
Related guides
Booking & contacts