The total active U.S. hotel development pipeline in February included 35.9 percent fewer rooms than in last year's report, according to the STR/TWR/Dodge Construction Pipeline Report for February 2010. There were 3,551 projects, or 368,740 rooms, in the pipeline for February. The steepest drop was seen in the Mountain Region, due to a 16,000-room reduction in the Las Vegas pipeline.