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Cowlitz River · Washington

Castle Rock Bend

Target: Coho Salmon

model v1.0.0 · Heuristic Baseline
freshly scored · 10/25/2026, 7:44:05 PM
52/100
Fair
Confidence37% · Low confidence

Confidence is reduced because fish counts, water temperature, recent angler reports were unavailable. The score reflects only the sources that reported in.

Angler briefing

generated · claude-haiku-4-5

Castle Rock Bend is rated fair for Coho today (52/100), though confidence is limited at just 37% due to missing fish counts, temperature data, and recent reports. The main concern is high river flow at 4280cfs—well above the ideal 600–2200cfs range—which will make fish holding and feeding difficult; weather conditions are moderately supportive with cloud cover and stable pressure, but moderate wind may complicate presentations. Consider checking current reports from other anglers before committing, and focus on deeper pools and current breaks where Coho are most likely to hold in these high-flow conditions.

What drove the score

Factor breakdown

River flow

+31pts

4280cfs is above ideal (600–2200cfs).

view source ↗

Weather & pressure

+22pts

100% cloud, 19 km/h wind, stable pressure.

view source ↗

Excluded — source unavailable

  • Fish countsweight 30% · dropped
  • Water temperatureweight 25% · dropped
  • Recent angler reportsweight 8% · dropped

Catch report

Did you catch fish here?

No account, no personal data — just the catch outcome.

Fish-count feed

last 6 readings
5/23/2026now · 1680 counted

Same inputs · every model version

v1.0.0active
Heuristic Baseline
52
37% conf
v1.1.0candidate
Thermal-Weighted Candidate
61
36% conf
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Provenance

inputs hash
9b395ec9
reproducible
✗ mismatch
usgs gauge
14243000 ↗