Drainage (at Park Street) is 18.8 square miles (as calculated by USGS StreamStats 4.3.11 software). Click (or copy/paste) the following link to see a time-lapse video at gauge location: https://cida.usgs.gov/stormsummary/timelapse/BasicData/WIWSC/SWO/Pheasant_Middleton_timelapse_videos/05427948_idx100_Pheasant_Middleton_timelapse_1920x1080at10fps_qmax42.webm