Battle for the Big Hole. The Big Hole River and Jefferson River watershed has seen dramatic declines in trout populations with some areas

Big Hole River, Montana - Great Rivers - Angler's OnLine

Algae blooms spell trouble for Big Hole River and its trout

Big Hole River, Montana - Great Rivers - Angler's OnLine

Low trout numbers on Big Hole River have biologists and anglers

Fish Populations and A River In Peril — Big Hole River Foundation

Flyfishing rivers, lakes USA: trout, grayling, whitefish

Southwest Montana Trout Populations Continue Alarming Declin - Fly

Chile Fly Fishing Trip Report - Patagonia 2023

Give a Big Hand for the Big Hole by Montana Outdoors - Issuu

Big Hole River, Montana - Great Rivers - Angler's OnLine

Montana PBS: Trout Decline - The Problems & Solutions

Missouri River Headwaters Sub-Basin Report – Summer 2021 - Upper

Trout numbers at historic lows in Big Hole River

Big Hole River - Wikipedia