Trout Stream Data Explorer

Electrofishing survey data — select a region to explore

⛰️

Southern Appalachian

Great Smoky Mountains, Cherokee NF, Pisgah NF, Nantahala NF & Eastern TN / Western NC

263 Streams
1958–2024 Date Range
8+ Sources
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🌲

New England

New Hampshire, Connecticut, Massachusetts & Vermont

2,719 Streams
1983–2025 Date Range
4 Sources
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🏔️

New York

Adirondacks & Catskills — USGS multi-pass electrofishing surveys

76 Streams
1988–2024 Date Range
1 Source
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🌿

Virginia & West Virginia

Shenandoah NP, Blue Ridge, Appalachian highlands — brook trout

332 Streams
1982–2021 Date Range
3+ Sources
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🏔️

Western US

Colorado, Idaho, Utah, Washington & Wyoming — cutthroat, rainbow, brown & bull trout

90 Streams
2018–2019 Date Range
1 Source
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🎣

Idaho

IDFG Standard Stream Survey — cutthroat, rainbow, brook, brown & bull trout — counts only, no density

1,384 Streams
1969–2025 Date Range
1.2M Fish Records
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Data compiled from state fish & wildlife agencies, USGS, NPS, USFS, and academic research.
Electrofishing survey data covering brook trout, brown trout, rainbow trout, cutthroat trout, and bull trout populations.