Skip to main content

Rio Grande Sea Run Brown Trout

Rio Grande Sea Run Brown Trout

There are many places in the world where the fishing isn't nearly as good as it used to be. Most places actually.

Steelhead runs in the Pacific Northwest are a shadow of their former glory. Atlantic salmon have been decimated in the U.S. to where wild populations are just barely hanging on in a few streams in Maine. Guides in the Florida Keys have been scratching their heads over a lost generation of bonefish. The oceans are depleted by 90 percent in terms of large gamefish, and you have to walk far and work hard to find a single native Eastern brook trout due to habitat loss and acid mine drainage.

On a planet where fish habitat everywhere seems to be constantly downgraded, and every year opportunities get worse and worse, it stokes your soul to find a river winding through open ranchland that is untouched and unchanged, and both scientific studies and angler results show brown trout fishing is getting better and better with every passing decade. Argentina's Rio Grande is that place.

The most recent scientific research shows returns of 45,000 to 70,000 adult sea runs annually to a watershed that stretches 200 kilometers into its headwaters. When the water is exceptionally high, the fish disperse throughout the watershed, but early in the season (which starts in January) and whenever the water is low, the fish are stacked mostly in the lower pools in Argentina, which are all on the site of the original Menendez Ranch. Quick math says that with 55,000 fish in the river, there is an average of more than 500 fish in each of the 102 named pools.


While you can catch big brown trout many places in the world, there's no other place where you'll have this kind of solitude and opportunity. The wading is easy, the pools all have drive-up access, and the Malbec is the best in the world. Your only obstacle here is the wind. Learn how to beat the wind, find silver sea-runs, and fish the night bite in my story "The Silver One" in the Oct.-Nov. Issue of FLY FISHERMAN (on sale now).


GET THE NEWSLETTER Join the List and Never Miss a Thing.

Recommended Articles

See More Recommendations

Popular Videos

 Getting Started In Fly Fishing

Getting Started In Fly Fishing

Getting Started In Fly Fishing

George Daniels Hauling Tuck Cast

George Daniels Hauling Tuck Cast

George Daniels Hauling Tuck Cast

All-Tackle World Record Taimen

All-Tackle World Record Taimen

Ilya Sherbovich's All-Tackle World Record Taimen catch & release.

Tying the Double Barrel Popper

Tying the Double Barrel Popper

All these tricks can be put to use on poppers or sliders for anything with fins, from panfish to billfish.

See More Popular Videos

Trending Articles

The push for native trout preservation is at the forefront of fisheries management in the West.Rainbow Trout Suppression on the South Fork of the Snake River Trout

Rainbow Trout Suppression on the South Fork of the Snake River

Boots Allen - June 25, 2020

The push for native trout preservation is at the forefront of fisheries management in the West.

You can be a successful freshwater fly fisher with just the nine knots shown here.9 Best Fly Fishing Knots You Should Know Beginners

9 Best Fly Fishing Knots You Should Know

Fly Fisherman Staff | Illustrations by Joe Mahler

You can be a successful freshwater fly fisher with just the nine knots shown here.

This line control is one of the unique aspects of fly fishing.How to Mend, Set the Hook, and Strip Line Beginners

How to Mend, Set the Hook, and Strip Line

Landon Mayer | Illustrations by Joe Mahler - August 11, 2020

This line control is one of the unique aspects of fly fishing.

Everyone wants a definite answer to “How close can you get?”.How to Get Close to Trout Beginners

How to Get Close to Trout

Tom Rosenbauer - August 05, 2020

Everyone wants a definite answer to “How close can you get?”.

See More Trending Articles

More Editor's Notebook

According to Sam Wilson of the Billings Gazette, a Montana fly-fishing guide was settled a lawsuit over the wrongful death in 2014 of his 81-year-old client.Fly Fishing Guide Settles Wrongful Death Suit Editor's Notebook

Fly Fishing Guide Settles Wrongful Death Suit

Ross Purnell - December 28, 2018

According to Sam Wilson of the Billings Gazette, a Montana fly-fishing guide was settled a...

Mass Shotting Victim Lawrence Levine Remembered as FLY FISHERMAN writer and North Umpqua GuideRemembering Umpqua Community College Victim Lawrence Levine Editor's Notebook

Remembering Umpqua Community College Victim Lawrence Levine

Ross Purnell, Editor - October 03, 2015

Mass Shotting Victim Lawrence Levine Remembered as FLY FISHERMAN writer and North Umpqua Guide

A 55-inch taimen carries a message of responsibility to save and protect Mongolia's wilderness rivers.The Beast from the Delger Editor's Notebook

The Beast from the Delger

Ross Purnell, Editor - January 03, 2017

A 55-inch taimen carries a message of responsibility to save and protect Mongolia's wilderness...

Sea Run Brown TroutRio Grande Sea Run Brown Trout Editor's Notebook

Rio Grande Sea Run Brown Trout

Ross Purnell, Editor - September 30, 2016

Sea Run Brown Trout

See More Editor's Notebook

Magazine Cover

GET THE MAGAZINE Subscribe & Save

Digital Now Included!

SUBSCRIBE NOW

Give a Gift   |   Subscriber Services

PREVIEW THIS MONTH'S ISSUE Arrow

GET THE NEWSLETTER Join the List and Never Miss a Thing.

Phone Icon

Get Digital Access.

All Fly Fisherman subscribers now have digital access to their magazine content. This means you have the option to read your magazine on most popular phones and tablets.

To get started, click the link below to visit mymagnow.com and learn how to access your digital magazine.

Get Digital Access

Not a Subscriber?
Subscribe Now