Photo: Overgrown streambank and culvert area with concealed cache—poor sightlines and debris create risks of ‘sandbars’ in the stream, thereby reducing free-flowing streamflow. If you’ve walked Mānoa District Park adjacent to the Kahaloa Street bridge recently, you’ve felt how welcoming it is. Much of that credit goes to longtime NSW block captain and Adopt-a-Park volunteer Mike Shiroma , who quietly clears trash, trims overgrowth, and paints out graffiti along the stream