dec 31, 2018 - Mudboil Depression Area (MDA) discharges, on average, ~29.7 tons/day of sediment to Onondaga Creek. June 12, 1992—Diversion Channel construction completed—watershed area at MDA reduced from 1.02 mi2 to 0.32 mi2 Effect of Diversion Channel on sediment loading does not appear until later in 1992.