May 26th – 30th: Party enters the first canyon which they named Flaming Gorge and they camped explored the area.

May 31st – June 2nd: The team and there boats run into their first serious rapids of the journey. On June 2nd Powell discovers a inscription high above the river engraved into a rock structure that read “Ashley 18-5.” A member of the crew tells of a story he had heard of another party that attempted to make the journey down the river but were unsuccessful having many deaths of the party.

June 3rd – June 7th: After resting and exploring the southern part of the Flaming Gorge at a location named Beehive Point. Next they enter end explore Brown’s park for a couple days.

June 8th – June 12th: The party enters into Lodore Canyon where yet again they encountered more rapids. In Powell’s book he states that one of the crew members decided they should name the canyon, the Canyon of Lodore. This canyon and its rapids produce their first boat, “No Name,” wreck of the expedition. The boat was trying to make bank and was sucked into a rapid. The crew washed ashore an island in the middle of the river and was needed to be rescued by another boat. Not until the next day, “No Name” and its contents could not be saved, which would have been a great loss for the crew because they were only two weeks into the expedition and they would have lost a third of their provisions and rations. On the night of June 11th, the crew used a small boat to rescue some barometers, thermometers, and a 3 gallon jug of whiskey. Remains of boats from the Ashley expedition had been found, and Powell decided to name the rapids Disaster Falls, considering the luck of the crews as they passed through.

June 13th – June 17th: Over the next few days the crew went through more treacherous rapids in the canyon that required them to portage and regroup many times a day. One section of the river dropped 100 feet in elevation in a distance of half a mile. Powell named it “Hell’s Half-Mile,” because they also had troubles with this stretch too. One of the boats, the “Maid of The Canyon,” was lost but later retrieved without damage. Powell later described in his book about their experiences in this part of the trip. “This has been a chapter of disasters and toils, notwithstanding which the Canyon of the Lodore was not devoid of scenic interest, even beyond the power of pen to tell. The roar of its waters has heard unceasingly from the hour we entered it until we landed here. No quiet in all that time.” The location that Powell was describing is known today as Echo Park, located in Dinosaur National Park.

June 18th-20th: Powell and his crew explore the part of Echo Park. During this part of the exploration Powell gets himself into trouble while climbing cliffs. Being threatened of death or serious injury, his colleague Bradly had to save him.

June 21st – 26th: The party continues on down the Green River, leaving Echo canyon and finding more difficult rapids. While they make their way through, the crew makes repairs on their boats due to all the banging around while they experienced the rapids. This section is named Whirlpool Canyon. Powell and his associates collected fossils and recorded measurements.

June 27th-28th: For the first time in a while, the team experienced a calm part of the river in which they named Antelope Valley. There were meadows on each side of the river where herds of antelope were noticed grazing.