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IdahoTrout Stream Data Explorer

IDFG Standard Stream Survey — electrofishing & snorkeling across 1,384 streams — cutthroat, rainbow, brook, brown & bull trout — 1969–2025

-- Streams
-- Total Visits
-- Date Range
-- Data Sources
No density metric available. The IDFG SSS export includes individual fish records but not reach area measurements, so fish-per-area density cannot be calculated. The table is sorted by average fish caught per survey visit — a relative index of trout abundance.
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Stream Rankings

# Stream Name 📍 Species Slope
%		 Avg Fish
/Visit		 Avg Size
(all time)		 Avg Size
(5yr)		 ≥ 8"
%		 Peak Fish
/Visit		 Total
Fish		 Visits Years First Last Drainage

Data Sources