Mandatory water cutbacks could be employed this summer in some parts of Iowa if the drought lingers. Tim Hall from the Iowa DNR's geology and water survey staff told a legislative panel on Thursday that the situation was worse in northwest Iowa. The state has the power to prioritize water use based on a system developed in the 1950s. Hall says the system has never been used and won't be used this summer either. He says conservation decisions are best left to local communities because situations vary so widely from one county or part of the state to the next.