Rain is one of Texas’s greatest resources, but it also causes some of our most serious problems. Too much produces flooding and erosion, too little produces droughts and aquifer depletion, and dirty runoff produces water pollution. These problems are becoming worse as more of the state’s land is covered with buildings and roads that prevent rain from soaking into the ground where it falls. That’s why more Texans are using building and landscaping features that can retain and reuse stormwater onsite. These features include rain gardens, green roofs, permeable pavement, and rain cisterns, and are known as Green Stormwater Infrastructure (GSI) and Low Impact Development (LID).