Milwaukee Metropolitan Sewerage District (MMSD) announced its 2012 Regional Green Roof Initiative. The district will provide funding of as much as $54/m2 ($5/ft2) of approved green roof projects within its service area. Milwaukee is home to many green roofs, including the largest in Wisconsin covering 4645 m2 (50,000 ft2) of roof space. Built by Milwaukee-based Rockwell Automation Inc. with an $800,000 grant from MMSD, the roof is designed to capture 4900 m3 (1.3 million gal) of water annually. Learn how much rainfall you could capture on a green roof, bioswale, or cistern, using MMSD’s H2O capture calculators. Also, check out greenroofsTV to see more green roof projects and perspectives.