Zion National Park officials and business owners in a nearby tourist town were still cleaning up and assessing the damage Thursday from a massive flash flood that ripped through the popular red rock park, sending mud and debris onto streets. No injuries were reported. Tuesday’s flash flood hit an area in the southern portion of the park with buildings, allowing people to take shelter from the water and the hidden debris, such as logs and rocks, it can often carry, park spokesperson Amanda Rowland said. In 2015, seven hikers were killed there when a storm flooded a narrow canyon. Roads have been cleared in the park, allowing cars and park shuttles to get around but drivers were being asked to drive carefully and to go slowly around equipment, Rowland said. Shuttle buses were not running in neighboring Springdale, where debris was still being removed, she said. When the rain started, …