The event was held at the Galloway National Country Club in Galloway, N.J.
The field played through very windy and wet conditions on the first day of competition, causing several players to post high scores.
Williamson, who won the individual Ivy League championship, shot nine over par, posting a first-round score of 80, nine shots off the lead.
"The weather the first day was bad -- like hurricane conditions," Williamson said. "I couldn't get the ball on the green -- and the course was challenging enough and conditions challenging enough that I needed a good game [to win]."
Entering the second day, Williamson said that he knew he needed to play well to make up ground. Although he was able to improve on his first-round score by six strokes, Williamson's second-round score of 74 left him 11 strokes behind leader John Hahn of Kent State University.
Williamson concluded the championships by shooting a 76 on the final day of competition.
"I didn't play as well as I probably would have hoped," he said. "I had to go out and make shots, which I didn't do too well. I fought back a couple of rounds that could've been a lot worse, so it was good in that sense."
Williamson said that, despite his performance, the trip to the regional was a good experience.
"It was neat to see some of the top teams and players in the country," he said. "Growing up in the Northeast, I had never seen them play live. To see the players [playing that well], it shows you can definitely get to that level."
Williamson, a Hanover High graduate, said that the cold weather in New Hamshire affected his ability to practice his game and hit balls onto the green with consistency. In the winter, William said he would hit balls into a net inside Leverone Fieldhouse to practice his swing, but couldn't get out on the course.
Seven of the top ten finishers at the regional were from southern universities where the weather does not affect their ability to practice in the winter and early spring months, as it does in Hanover.
"The fact that they have all year round to practice plays a part [in their success]," Williamson said. "It just takes that certain amount of practice that you just don't have the time to practice growing up in the Northeast."
Despite his lack of outdoor playing time, Williamson was able to put up a strong showing and was the top finisher from the Ivy League at the regional, once again proving himself as the Ivy League's top golfer this year.
The Ivy League was also represented in the tournament by five golfers from Columbia, which won the Ivy team championship this year. The Lions finished in last place in the team portion of the competition, 124 strokes behind the University of Alabama, which won the event.
Williamson swept the Ivy League's postseason awards -- he was named the Ivy League Player of the Year and Rookie of the Year, in addition to being named to the All-Ivy first team.
Now that the collegiate season is over, Williamson said he will look to continuing practicing, focusing especially on improving his swing in order to prepare for events this summer.
"This time of year, I start practicing more and more," he said. "I don't have a teacher, so I just analyze my swing and teach myself every time I go out."
Williamson plans to compete in a couple of amateur events throughout the summer, he said, and will also attempt to qualify for the U.S. Open in a sectional event on June 8. The sectional consists of 36 holes of golf in one day, and the top three finishers qualify for the Open.
The summer tournaments and practice will help Williamson improve his game, as he seeks to continue his individual success and to help the Big Green compete at a higher level, he said.
"Next year, I'll come back with a lot more confidence and be able to manage better," he said. "I'm looking forward to next year, and hopefully we'll be able to improve as a team."
