Always The Wind
Always, the Wind
Dean Hellinger photo
ot the least of the adversities the Corps of Discovery faced was the relentless wind of the high plains. The journalists mentioned it again and again, usually in frustration and resignation, sometimes with tongue-in-cheek good humor, and at least once with scientific objectivity.
On June 4, 1805, while they were exploring the "north branch" which he would soon name Maria's River, Lewis and his men camped "among the willow bushes which defended us from the wind which blew hard from the N. W."
We can be forgiven for reading a quality of relief into Lewis's words, for similarly, during the first two decades of the 20th century, homesteaders on the plains planted trees to shield their homes and barnyards from strong wind and blowing snow. Shelterbelts, as they are called, are not only practical conveniences but psychological necessities. The South Dakota pioneers in Ole Rölvaag's novel, Giants in the Earth, dealt stoically with fickle weather, but it was the wind that drove one of them to insanity.
At the town of Cut Bank, in the heart of the Golden Triangle, near which Lewis and company camped on July 21, 1806, recent records indicate that, on average, the wind is calm less than one percent of the time, averaging about 13 miles per hour, and occasionally reaching 75 to 100 mph in wintertime.
Native tree species such as willow, white ash, andboxelder were sometimes used for shelterbelts, but they require plenty of water. The best choice was an import, the Siberian peatree, or caragana, which grows to a height of 12 to 14 feet, has dense foliage, good wind resistance, and a small thirst.