Erik Mason, Longmont Museum Director provided highlights of Longmont's 2013 flood. He also reminded us of previous flooding in Longmont. The first documented flood in the front range happened in the Denver Cherry Creek area in 1864. Floods in Longmont date back to 1894 and 1921, flooding several areas of Main St. In 1935 a levy broke at Terry Lake and flooded the east side of Longmont. In 1969, Erik said, "this was the flood that wasn't". There was a tremendous rain downpour, but the Button Rock Damn prevented severe flooding in Longmont. The Longmont Museum is honoring the 10th anniversary of the 2013 flood in several ways through exhibits, public programs and tours of affected areas.