Throughout the month of July, more than 35 volunteers picked up litter, removed graffiti, and maintained trails in the Park, including the Centennial Trail. Together they gave more than 120 hours of their time to the park. Another group of 24 volunteers – including 20 children ages 8-15 – helped fill areas with gravel where the Spokane River flooding had washed away the earth under and around the Centennial Trail.