Fig. 1. Study locations, including water sampling sites and sites of hydrometeorologic instruments. Water samples for E. coli were collected daily at Central and Mount Baldy Beaches and at the mouths of Kintzele Ditch and Trail Creek. Trail Creek instruments included a gauging station and weather station; Kintzele Ditch instruments included two pressure transducers (one offshore) and a multiprobe monitoring sonde. An acoustic Doppler current profiler was located offshore of Mount Baldy, and predicted measurements for lake conditions were developed by the National Oceanic and Atmospheric Administration a location offshore of Mount Baldy/Kintzele Ditch.