"Due to this federal ownership, our options for planning and development are very constrained and require constant coordination with federal agencies," Clark County Air Quality Department Director Marcie Henson said.Growth may stretch an already limited water supply. Water officials support the proposal, which allocates funding to maintaining the channels used to recycle wastewater through Lake Mead. The region has enacted some of the West's most aggressive conservation measures, including an outright ban on decorative grass in certain places, to prepare for growth.