The Kings River’s overflow system in western Fresno County cannot carry as much floodwater as it once did, so there is greater risk of flooding in this wet year, Fresno County supervisors were told on Tuesday. The problems led to approval of an emergency proclamation by supervisors that will allow officials to seek state help in an all-out effort to improve the county’s slough and levee system and any new problems that could arise from flooding over the next few months.