Bass lake, located in southwest Marinette County, is a 37.4 acre hard water drainage lake with a maximum depth of 62 feet and an average depth of 23 ft. Bass lake is dimictic and exhibits very strong thermal stratification due to its small surface area relative to mean depth (stratification factor= 42. 7). The Bass lake shoreline is dominated by low-lying cedar swamp with limited upland areas. Development is limited to four private dwellings, giving the lake a strong wilderness character.

Marinette County proposes to treat Bass Lake with alum to reduce the effects of sediment phosophorus in the lake. Project activities include treating all waters of Bass Lake in excess of 3 feet deep and conducting pre and post treatment water quality monitoring. AMENDMENT #1: Marinette County proposes a "5 fold" increase the Alum dose in Bass Lake to provide long term control of P release from enriched sediments.

Marinette County proposes to treat Bass Lake with alum to reduce the effects of sediment phosphorus in the lake. Project activities include treating all waters of Bass Lake in excess of 3 feet deep and conducting pre and post treatment water quality monitoring