DES MOINES, Iowa (AP) — Iowa boaters will need to follow new laws designed to protect the state’s lakes and rivers from non-native aquatic species. The Department of Natural Resources says that beginning July 1st, it will be illegal to transport any aquatic plants on water-related equipment. Boaters also will be required to drain all water from boats and equipment before leaving a body of water, then keep drain plugs removed or opened while transporting the equipment.

Signs listing the rules will be posted at public access points. The new laws and earlier regulations are aimed at preventing the spread of creatures such as zebra mussels and Eurasian watermilfoil.