Lake Geneva to swim at some beaches of the lake; indeed, visibility under water was near zero. By the 1980s, intense environmental pollution (eutrophication) had almost wiped out all the fish. Today, pollution levels have been dramatically cut back, and it is again considered safe to swim in the lake. Major leisure activities practiced include sailing, wind surfing, boating (including water skiing and wakeboarding), rowing, scuba diving and bathing. On a scientific footnote, in 1827, Lake Geneva was the site for the first measurement of the speed of sound in (fresh) water. French mathematician Jacques Charles François Sturm and Swiss Physicist Daniel
Lake Geneva, Wisconsin -88.434424). The city is situated on the northeast bay of Geneva Lake on relatively flat ground, with some steep hills and bluffs. According to the United States Census Bureau, the city has a total area of , of which, is land and is water. As of the census of 2010, there were 7,651 people, 3,323 households, and 1,879 families residing in the city. The population density was . There were 4,225 housing units at an average density of . The racial makeup of the city was 87.6% White, 0.6% African American, 0.2% Native American, 1.5% Asian, 8.5% from other races,