Students set up a giant Slip ‘N Slide on Farrand Field Wednesday night. (Amy Leder/CU Independent)

Water flows from the bridge between the Engineering Center and 28th Street on the east side of campus Wednesday night. (Amy Leder/CU Independent)

Students walk through a flooded underpass below 28th St. wednesday evening. (Nate Bruzdzinski/CU Independent)

A Boulder fire truck plows through water at the intersection of 30th and Colorado wednesday evening. (Nate Bruzdzinski/CU Independent)

Boulder police speak with evacuated residents of family housing wednesday evening. (Nate Bruzdzinski/CU Independent)

Reed Hall residents assess the flood in Reed 005. (Nigel Amstock/CU Independent)

Waters still rushing as Boulder Creek rises under the Boulder Public Library overpass. Boulder and CU authorities have been sending out constant warning and updates for the past few hours. (Gray Bender/CU Independent)

Sophomore mechanical engineering major Tyler Joy, left, bails water out of his dorm in Reed Hall.(Nigel Amstock/CU Independent)

The flooded basement of Reed Hall. (Nigel Amstock/CU Independent)

CU student Peter Hassinger looks up flood updates and takes a video at the Arapahoe Ave. underpass. (Gray Bender/CU Independent)

A trunk floats a top a layer of water in Reed Hall. (Nigel Amstock/CU Independent)