The Conesus Lake watershed covers an area of 70 square miles entirely within Livingston County. Seven municipalities are located partially within the watershed: the Towns of Conesus, Geneseo, Groveland, Livonia, Sparta, and Springwater, and the Village of Livonia. The Lake has 18 sub-watersheds based on major tributaries. The watershed is characterized by gentle slopes at the northern outlet and southern inlet areas. Steep hilly slopes characterize the flanks and southern portion of the watershed.