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I • Proposal: The Town of Dunn is applying for financial assistance to purchase a parcel of land in order to preserve and improve the water quality of Lake Kegonsa. Present Conditions: 1. The 7 acre lot to be purchased presently acts as a siltation area for the 190 acre watershed of steeply sloping farmland and woods to its west (See Exhibit B,Area 1). According to calculations from Kevin Connors (Exhibit F), Dane County Conservationist, roughly 172 CFS flow through a culvert under U.S. Highway 51 and across this parcel before entering another culvert to Lake Kegonsa. This happens roughly twice a year, during spring thaw and during the fall, after crop removal. 2. Because of the increasing residential pressures along Lake Kegonsa, the steeply sloping watersheds located to the north and south of this parcel (See Exhibit B, Area 2 and 3) have already lost their siltation trap and the runoff from them now goes directly into Lake Kegonsa, via ditches and culverts. 3. The parcel of land to be purchased is located on the Colladay Point Peninsula, which is subdivided into single family residential lots. This lot has historically been the only place neighborhood children can play together without having to be chauffeured by parent in automobiles or intensely supervised at the lake. This neighborhood is practically isolated from foot or bicycle traffic because it is surrounded by Lake Kegonsa on three sides and by U.S. Highway 51 on the west. Immediate Goals: To preserve this parcel and its existing ability to remove silt from runoff going into Lake Kegonsa. Long Term Goals: Almost all of the goals and policies adopted by Town of Dunn Park Commission in their 1986 Undated Town of Dunn Parks and Open Space Plan apply directly to this project (See Exhibit A, starred items). 1. Siltation capability of this land a. Through engineering and earthwork this land's ability to remove silt, fertilizers, and other chemicals could be improved as needed. b. Through construction of culverts to adjacent damaged watersheds the area of improved runoff quality is tripled. c. If the hills overlooking Lake Kegonsa ever become suburbanized and developed, the increases in runoff from roadways and yards could also be filtered through this park thus avoiding the common decline of lakes in developed areas. 2. Provide an open space area for an isolated neighborhood. 3. Improve native plant communities and animal habitat. 8041990 • ZONiNG tldiL.