The Fishing
The first Brown Trout were stocked in Tierra del Fuego by John Goodall in 1935. Sixty-thousand ”salmo trutta” eggs survived the ardous journey from Puerto Montt, Chile, to be planted on the Candelaria and McLennan rivers. Both of these rivers are tributaries of the Rio Grande. After approximately 15 years, these fish began to find their way to the sea, possibly attracted by the rich nourishment of the near-by estuary.
These Sea-Run Brown Trout now complete the yearly migratory cycle of salmonids, spawning in freshwater during the summer months. “Salmo trutta” remain in the river for a period of time ranging from 1 to 4 years before their first migration to the sea, where they will feed and grow for about 6 months before returning to freshwater weighing approximately 6lbs. Researchers have found trout which had spawned more than 6 times! A trout which has completed 4 cycles of returning to freshwater can weigh over 20 lbs. The frequency with which they return to freshwater is also an indicator that these fish face very few threats. This indication also provides a very real example of the benefits of Catch and Release.
Fly-Fishing Equipment
The fly-fishing and equipment suggestions that follow are drawn from over two decades' experience fishing the Rio Grande under a wide variety of conditions.
Rods
We've tested many rods on the Rio Grande throughout the seasons.
For a single-handed rod, we've found a 9-10 ft. rod for a No. 8 line to be ideal for covering the water and for optimal sport. A rod of this size makes casting easy with the normal downstream southwest wind, while an 8 or 9 wt. helps you to drive your line into a contrasting wind, when necessary. Given the Rio Grande's moderate flow and generally even gravel bottom, you'll find an 8 or 9 wt. capable of doing battle with even the river's largest Sea Trout (20 to 30 lbs.), while it ensures the most action with smaller Sea Trout (4-9 lbs.).
Light two-handed rods are increasingly popular and allow anglers to cast a comfortable line with less effort, particularly on windy days. Mending and controlling line is also easier with a two-hander. We encourage you to bring a 13-15 ft., 9-11 wt. rod. If you are new to two-handed rods, our expert guides can instruct you and will help you learn quickly. Among rod makers Sage, Thomas & Thomas, Scott and G Loomis are excellent choices for Rio Grande fishing. It would be wise to bring a back-up rod as well.
Loaner Rods
There are quality fly rods available at the lodge for you to use if needed, however we request that you advise us of your need for a rod prior to arrival to ensure availability. A US $100 deposit per rod will be requested as a guarantee that the loaner rod will be returned in the same condition that it was issued.
Reels
A quality reel is crucial for playing big Sea Trout. A strong, smooth drag is a must. Reels (and spare spools) should have capacity for the fly line and 100 yds. of 20 lb. backing.
Appropriate reels include Abel, Tibor, Hardy, Lamson, Scientific Anglers, Ross, Etc.
Lines
To be well prepared for Tierra del Fuego, anglers should include at least three lines to accommodate variance in water levels and wind conditions. Weight forward fly lines are generally used on the Rio Grande. Floating lines are typically most useful in low water conditions and during early morning and evening hours, when Sea Trout are inclined to be near the surface. Also a sinking shooting taper is very important. The Teeny T-200 and T-300 lines have proven to be excellent, and at least one or both of these lines should be considered as a must-bring item. Sinking tips and sinking poly-leaders are also used a lot. Intermediate lines are also effective in some conditions.
Even experienced anglers often find their running line snarls when buffeted by wind. Prevailing southwest winds can be "harnessed" by roll casting or spey-casting, which eliminates the need to backcast --difficult to do with a trailing wind. We found that a simple roll cast carries even large streamers 35 to 50 ft. across and downstream, or far enough to cover the holding lies. Weight forward lines can be roll cast effectively by stripping and shooting line during the cast.
Leaders
Experience on the Rio Grande indicates that Sea Trout are not particularly leader shy. While reasonable stealth should be exercised, your chief concern is to bring monofilament in sizes that will turn over the array of fly sizes and patterns you'll be using. Spools of monofilament should include 15, 12 and 10 lb. test weights. While fishing sinking lines, made-up leaders are not necessary since a few feet of monofilament will do fine. Maxima Ultra-green is a good choice as it has plenty of stretch, a factor worth considering when the Sea-Trout of a lifetime hits your fly! While fishing, be sure to check your mono regularly for casting knots and abrasions. After each fish caught test your leader knots. For floating lines it's good to have knotless tapered leaders from 9-12 ft. with 0X tippets.
Flies
Plan to bring a good selection of flies, however, some fly patterns, as well as a modest supply of back-up tackle, will be available for purchase at the lodge. Sea-Run Brown Trout are mysterious fish. The only constant in their tastes seems to be a penchant for black. The trout that accepts your small Salmon patterns today may demand flies with white rubber legs tomorrow! Historically, most Rio Grande fish were taken on large streamers, perhaps because those were the patterns most commonly used. In low water conditions, more large Sea Trout are taken on smaller wet flies, nymphs, and dry flies. We suggest packing a range of flies in various patterns and sizes, and urge frequent changes when one combination isn't working. These combinations will be determined based on light conditions, water levels, and especially on your guide's advice. Barbless hooks are strongly encouraged. Double and Treble hooks are not permitted.
Basic working fly list:
Collie Dog tube flies (3½-4½" long, both aluminum and copper bodies, with hard plastic tubing and #4 wide-gape hooks)
Bunny leech, Zonker, Woolly Bugger (black/olive), articulated string leech types, with electric blue flash, on #2-4 hooks
Peacock (now a staple on Rio Grande, tied on #2-4 hooks)
Girdle or Yuk Bug rubber legs (#4-12)
Bitch Creek nymphs (orange and black for preference, #4-12)
Bead head nymphs (Prince, Hare's Ear, etc. #10-14)
Traditional Atlantic Salmon flies
Bombers or other waking dry flies (natural deer hair, black & green on #4-8 hooks), for use drifted or with a Portland hitch
Include 1-2 inch tube flies if you have them, as tubes can be very effective on the Rio Grande.
Also, take any large dark trout or salmon fly in which you have confidence. Fishing a fly that has worked for you in the past, and in which you have confidence is half the battle. Note that larger streamers should be weighted and should be tied on heavy hooks with good gapes. Double and Treble hooks are not allowed on the Rio Grande.
Waders
Wading isn't difficult on the Rio Grande. However, we recommend chest waders for warmth, to get to that occasionally fished cut bank, and to manage deeper water when crossing the river. Fine choices would include Simms Gore-Tex Guide model or Simms new G3 wader, and Patagonia SST+ Breathable Waders or any good 3.5 mm neoprene wader.
Capilene fleece pants are a must wear under Gore-tex waders, given that water temperatures can be in the 40's (F). Thick wool or capilene fleece socks are also a must, and long johns might also be necessary.
The river's gravel bottom isn't mossy, but you might find that the security of felt soles aids in concentrating on casting and landing fish, by keeping your mind off your feet. Bringing a good pair of wading boots with felt soles or rubber cleats is a must. Use gravel guards and be sure to bring a wading belt. A wading staff is optional, but can come in handy during very windy days.
Clothing
The summer climate of this southernmost region of South America is extremely variable, and a wide range of temperatures and weather conditions should be expected. We recommend layering clothing, enabling you to add or remove garments during the day.
Pack polar fleece jackets, thermal underwear, a polar neck, wool socks, and a wool cap to be prepared for the extreme weather. Flannel or chamois cloth shirts and polars are ideal for the stream, although you'll undoubtedly change to something lighter while in the lodge. Also take a reliable windstopper/rain jacket. Gore Tex is excellent. Its waterproof yet breathes and so is comfortable on sunny, windy afternoons. Simms Gore-Tex and Patagonia SST wading jackets are very popular choices.
Most first-time visitors are surprised at how dry this region is, more reminiscent of Wyoming than of Scotland. Attire in the lodge is casual. Near casual is also the dress style in Buenos Aires. Laundry service is available at the lodge.
Fishing Methods
Although most of their lives are spent in the ocean, the Sea-Run Brown Trout seem to retain more of the eccentricities of resident browns than, for instance, steelhead do of resident rainbows. They are moody fish and must be shown flies the way they want, and see them at the precise time they want them.
The Rio Grande isn't a big river, thus, it's compatible with a wide range of techniques. Using different techniques is critical, since a large Sea Trout may demand that a fly be fed to it on the bottom one hour, but rise to the Portland Hitch the next hour. Water levels can change from week to week and the water generally drops as the season progresses. Vary your presentation markedly in each pool fished, until you find the right formula of fly, line, (see Lines) drift or swing and retrieval method.
Pay close attention to the advice of your guide, whose primary aim is to recommend the methods that will help you hook and land your fish. Generally, the Rio Grande's Sea Trout seem to lie near cut banks during the middle of the day, though in low water they will also lie in the faster necks of pools. Naturally, they move up primarily during early morning and late nighttime hours. Generally, "tails in the morning and heads at night" is a good rule of thumb. Also look for fish distributed throughout pools on calm, overcast days. Try to begin each fly drift or swing as close to a cut bank as possible, whether the presentation is upstream and across, straight across, or downstream and across. One theory holds that on sunny days, Sea Trout will take best if they don’t have the sun in their eyes.