The Madison River's Return to Greatness
MADISON RIVER VALLEY ~ YELLOWSTONE RIVER VALLEY ~ GALLATIN RIVER VALLEY ~ BOZEMAN ~ ENNIS ~ LIVINGSTON ~ BIG SKY ~ GARDINER
406-522-9854
Montana Angler Fly Fishing, 76 Lucille Lane, Bozeman MT 59718
More Montana Fly
Fishing Articles!
The Madison River's return to greatness!
By Brian McGeehan
Montana's Madison River has long been one of the most famous and revered rivers in the world. The river often
is listed as the number one trout river in North American and appears in books with titles like "50 places to fish
before you die". In the mid 90s everything changed for the river when a microscopic invader had a devastating
impact on the river. Whirling disease is a small microbe that affects rainbow trout. The parasite causes
deformation in the spinal cord of young trout that causes them to swim in circles, usually resulting in death. In
some reaches of the river, mortality of rainbow trout reached levels over 90%. News of the outbreak quickly
spread throughout the angling community and the number of fisherman visiting the river drastically decreased.
The Madison river became the poster child for whirling disease and the microbe quickly hitchhiked to other
rivers around the West producing similar results. Some states, like Colorado, tackled the problem by stocking
rainbow trout fingerlings. In Montana, where there all trout in rivers are wild and there is not a hatchery program,
fisheries biologists decided to let nature run its course. The gamble paid off, and the trout that did survive the
initial massive die offs began showing some resistance to the disease.
Today the Madison River has returned to greatness, and although whirling disease is still present in the river,
rainbow trout levels have rebounded to pre whirling disease levels. The Madison is once again one of the
favorites of Montana fly fishing guides and outfitters. Many guides also feel that the brown trout fishing in the
river is better than it has ever been with numerous fish over 20" frequently being caught. Each of the last few
years a few lucky fisherman have managed to hook and land monster browns the taped at over 30" and
weighed over 10lbs.