T he Boulder chapter of the Acacia fraternity will celebrate its 100 year mark in Colorado this weekend.

For the growing house, the anniversary couldn't come at a better time.

The Acacia chapter, previously the Masonic Club, received its Boulder charter Jan. 27, 1911, and has initiated about 1,200 University of Colorado student members since .

About 70 Acacia members and alumni from across the country are expected to attend several members-only events this weekend.

Over the group's 100 years in Boulder, there have been three lulls: a closure in 1969, then re-established in '70s, then a closure a short time after; the chapter was revived in 1988 and flourished until the late '90s, but then closed again in 2000.

Spencer Cummins, CU senior and president of the chapter, said the chapter closed in 2000 due to low membership.

Marc Stine, Interfraternity Council's (IFC) Greek advocate, said many chapters have experienced a lull at some point, often due to a membership decrease or bad behavior. However, he said Acacia's strong alumni presence and roots help make up for any down time.

"Acacias have (a) very strong and active alumni group," Stine said. "Their alumni provide a strong network to members professionally."

Cummins said he is confident that the chapter will continue to flourish with 10 new recruits this fall, bringing the member total to 46 -- only four members shy of what Cummins considers a "sustainable number."

"It's really exciting for us -- as seniors especially -- since we rebuilt the chapter and are about to graduate and leave it in the hands of the next generation," Cummins said. "We're confident that with our growth over the past few years, and the anniversary, that the chapter will thrive and grow after we leave.

"This fall was the biggest rush (Boulder's Greek community has) ever seen. (Acacia) had our second-highest recruiting class since 2008."

The anniversary will be utilized to gain donations to start a scholarship fund for students who excel in academics -- not limited to potential recruits.

"Last year we gave the scholarship to Sarah Pierce, so it's not just for guys who are interested in joining, we want to help develop the community," Cummins said.

Members of Acacia are hoping they can continue the scholarship annually.

The members call the house at 1019 14th St. home while they work to redevelop Acacia's old house at 955 Broadway. The project is expected to be complete in 2012-2013.

The fraternity is also working to organize an annual charity event called Acaciaclaus. Members will gather donations -- mainly toys and money -- for underprivileged kids in the community during the holiday season, Cummins said.

Carlos Garcia, Greek liaison for CU, said Acacia's strong service values benefit the campus and surrounding community.

"Greek students, in general, have a long-standing tradition of performing community service in Boulder and sponsoring philanthropic events, which of course benefit the community," Garcia said. "We support and encourage our students continue these practices."