The idea of diverting water from the Colorado River on the Western Slope of the Continental Divide to the productive farmlands of the eastern plains had been a dream of planners as early as 1929.  Subsequently,  a long period of drought and the sagging economy of the “Great Depression” whetted demands for what became the largest trans-mountain diversion project ever built.

The Colorado-Big Thompson Project takes water from Grand Lake on the western side of the Continental Divide to the Big Thompson River on the east.  The water flows through a 13 mile tunnel beneath Rocky Mountain National Park.  In order to supply the residential and farming needs of Northeastern Colorado, the project was begun in 1938 and continued through the years of World War II.  The first water flowed though the tunnel, named for Senator Alva B. Adams, on June 23, 1947.

In order to assure an adequate supply from Grand Lake, a dam was built creating Shadow Mountain Reservoir.  A larger lake, Granby Reservoir was then built below, with a unique pumping plant that forces water into Shadow Mountain.  The Farr Pumping Plant cost over $9 million and provides an additional 700,000 of irrigated land to northeastern Colorado.  Further reservoirs were added, both to supplement the diversion and to compensate the water needs of Western Colorado.  These include Willow Creek and Windy Gap Reservoirs in Grand County.

While most legislators were enthusiastic about the project, U.S. Representative Edward Taylor was vehemently opposed to the reduction of water flowing down the Colorado River.  A compromise was reached in the creation of Green Mountain Reservoir (on the Blue River), which reserves water to replenish the Colorado River.   The city of Denver later claimed upstream water on the Blue River for the massive diversion project of Dillon Reservoir

Claims on the water of the Colorado River range from the fruit and wine regions of the Grand Valley in Colorado all the way to Los Angeles and Mexico.  It can be said that every snowflake which falls in Western Colorado had already been over-appropriated, especially during drought periods in the arid West.

The prospect of discovering a remnant from a 10,000-year-old stone age society that inhabited Colorado's Middle Park so long ago seemed remote at best - while the suggestion that a prized Folsom point could somehow materialize before our very eyes appeared all but impossible.  For one thing, it was the last day of excavating for the summer at the Barger Gulch archaeological site and the ten member scientific team would soon be packing up and heading back to their ivory towers at the University of Wyoming and the University of Arizona.

Barger Gulch is a desolate spot that the federal Bureau of Land Management (BLM) oversees. It is hard, parched dirt dabbled with sagebrush as far as your eyes can see across the flat valley - a haven for all manner of bugs and other forms of native wildlife. In winter, the place turns to the opposite extreme as temperatures plunge to minus 40-degrees and howling winds whip up ghostly images of snow that swirl eerily across the land. This is Middle Park, a high mountain basin with roughly the same geo-political boundaries as Grand County. It encompasses some 1,100 square miles of unforgiving territory flanked on three sides by the formidable wall of the Continental Divide and its terrain soars high over the Great Plains into the thin, alpine air up to altitudes of 13,000 feet above sea level. What would induce these primitive Americans to trek all the way up here without so much as horses for transportation? How would they have survived the brutal winters with only primitive tools and clothing?  And why in the world would they ever want to settle in such a barren, god-forsaken place as Barger Gulch? 

This site could well prove to be one of the most significant archaeological discoveries of its kind in North America, according to BLM officials who oversee the project here. In just three years of work in a relatively small excavation area, investigators unearthed more than 18,000 artifacts - a staggering number ten times that discovered at typical Folsom sites. And this is only one of four sites in the same vicinity.  In addition to Barger Gulch and Upper Twin Mountain, discoveries include the Jerry Craig and Yarmony Pit House sites. Most of these were occupied by peoples described by archaeologists as Paleo-Indians, a catchall term for ancient humans that inhabited North America; Yarmony Pit House post dated Paleo-Indians by about 3,000 years.

But long before Paleo-Indians ever set foot on the Continent, Middle Park was a prehistoric menagerie; 20-million years ago, it was the stomping grounds for prehistoric rhinoceros, three-toed horses, camels, giant beavers, and even small horses. Creatures known as oreodonts also romped across the mountainous terrain. These vegetarians, ranging in size from small dogs to large pigs, fed on grasses and green, leafy plants. In fact, the skull of one of these animals was discovered recently in the vicinity of Barger Gulch. These long extinct, hoofed animals resembled sheep, but were actually closer to camels, and were common in the western U.S. This latest discovery is remarkably well preserved; while the bones have turned to stone, the smooth, hard enamel that encased the animal's teeth is still intact. 

Humans arrived in North America much later - about 12,000 years ago - as the last Ice Age of the Pleistocene Epoch made its exit. These first Americans crossed a land bridge from Siberia to Alaska and began populating the entire Continent; experts believe it is possible they also arrived on boats following the Continental Shelf into North America. Folsom people are best known as nomadic, big game hunters who chiseled out their spear points and finished them off with a distinctive, artistic flourish - a unique groove, or flute, that runs lengthwise along the face that has become the symbol of this Paleo-Indian culture. They honed the tips of these primitive weapons surprisingly sharp for killing frenzies that were necessarily up close and personal: they herded their prey into traps before launching their spears - and archaeologists suspect there was just such a bison ambush site near Barger Gulch. The quarry just over the rise is a gold mine of raw materials, including fine-grained Kremmling chert and abundant Windy Ridge quartzite, which provided a never-ending supply of top grade stone. "It makes sense," explains Todd Surovell. "You would want to camp where you could get as many raw materials as possible within a short distance. That's where you're going to park yourself for awhile."

The bulk of these tools originated with local material, but investigators have found some 200  "exotic" items noticeably out of place at Barger Gulch. One is a distinctive piece of yellow, petrified wood that came from 93 miles away as the crow flies, near the town of Castle Rock on the Colorado plains. Another is a large biface that was brought up from the Arkansas Valley, some 60 miles south. "They worked on it up here in one place and turned it into two, maybe three projectile points," notes Surovell. "One of them broke during manufacture and we have two pieces that fit exactly together."

Fitting these and thousands of other pieces together is what archaeologists do when they get back to the lab. The process begins on site where investigators photograph each find and record its exact location within the excavation block. This gives the team a visual reference to help recognize activity patterns - a way to connect the dots of Folsom society.  But the specks come to an abrupt stop, as if they suddenly run into a solid wall. "If we could figure out that this represented the wall of a structure, that would be really special," he explains. "Nobody's even been able to do that before in a site of this age in North America." Just then, a graduate student pops his head inside the door. "You want to be a camera man?" he asks Surrovell. "What do you got?" "A Folsom point," he replies with a broad grin. We rush over to the site where Waguespack has dug a narrow shaft down the north wall of the excavation pit and hit pay dirt - a Folsom point that remains half buried in the stratum of rich soil.

In 1915, thanks to the efforts of visionary Enos Mills, Rocky Mountain National Park became the 10th national park. The concept was then, and still is, conservation of natural lands and wildlife. No commercial enterprises which consume resources operate within its boundaries--no logging, grazing, farming, mining, hunting or trapping.

Almost all private property in-holdings have been bought by the National Park Service and the buildings destroyed. Located within park boundaries, Longs Peak, at an altitude of 14,256 feet, named for explorer Stephen Long, is visible from both sides of the Continental Divide. Indeed, one can look northwest along 17th Street in Denver, to see one of the area’s best known peaks.

Trail Ridge Road, which runs through the park, was completed in 1932 and is the highest continuous highway in the United States. It is open only in the summer. Dignitaries from the towns of Estes Park and Grand Lake celebrate the opening each year, often but not always by Memorial Day, with a ceremony at the top called “Hands Across the Nation.”

Construction on the railroad line from Denver to Grand County began in July 1902.

The project, called the Moffat road (officially the Denver, Northwestern & Pacific), was the seemingly impossible dream of David H. Moffat, who spent much of his personal fortune building the tracks over the Continental Divide.

The rails pushed higher and higher up the mountains until they reached a station named Corona, meaning the crown of the continent.

Corona was the highest point in the world with a standard gauge railroad and the journey from Denver in the winter was perilous at best.

Huge snowplows were required on either side of the Divide to keep the tracks clear.

Eventually, in the late 1920s, a tunnel was dug through the range, eliminating 22.84 miles of track and the breathtaking journey over Rollins Pass.

The railroad reached Granby and Hot Sulphur Springs in 1905 and Kremmling in 1906, and played a significant role in building the population of Grand County.

In 1900 the total resident population of Grand County was only 741, but grew to 1,862 in 1910.