02-10-1997 Council Packet - Laserfiche WebLink

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Drainage from the course is to the south into a large wetland complex which flows into Lake Minnetonka. A portion of the course is near the elevation of the wetland. As a result, runoff from this area is collected in a lift station and pumped into the wetland through a pipe under an adjacent highway. Approximately 30 acres of the course drain to the lift station. A network of shallow 6 Inch diameter tile lines discharge water into the lift station. The tile lines link a network of surface inlets connected by 4 inch perforated tile lines approximately one foot below the ground surface. A drainage ditch running parallel to the highway also discharges into the lift station through a tile line. The ditch collects runoff mainly from the golf course. The adjacent highway is sloped to drain to the south away from the ditch. MINiKAHDA CLUB The Minikahda Club Is a 156 acre, 18 hole private golf course located near downtown Minneapolis, Minnesota, adjacent to the northwest corner of Lake Calhoun. Nine holes of the course were constructed in 1898, with an additional nine holes added in approximately 1902. The course encompasses 156 acres, of which 86 are maintained as turf. The course contains a 10 acre bird sanctuary as well as a four acre prairie. Over 3000 mature Elm, Basswood, Oak and Maple trees are established on the course. Specific acreages of land use types on the course are shown in Table 1 . The topography Is mostly gently rolling, with hills having 0 to 8 percent slopes. Approximately 10 percent of the course has steeper hills, with slopes between 8 and 18 percent. The soils are predominantly well drained Dakota loam, with moderate permeability. However a low area of organic Seelyville muck bisects the course north to south. Runoff from the course flows into Lake Calhoun through the City of Minneapolis storm sewer system. The Club is located downstream of a 1168 acre watershed comprised of residential, commercial, industrial and open areas of the City of Minneapolis. The drainage from the watershed enters the northwest corner of the course in a 36 inch corrugated metal pipe. Approximately 200 feet from the golf course boundary the stormsewer discharges into an open channel. The open channel bisects the course and discharges into a 36 inch concrete pipe at the southeast corner of ^he golf course. The concrete pipe, in turn, discharges into Lake Calhoun. Runoff from the golf course drains into the channel through a combination of surface sheet flow and shallow tile drains. Three ponds have been constructed near the downstream end of the open channel. As Table 1 shows, the cut height on the greens and tees were similar for all of the courses. Discussions with golf course managers indicates that these cut heights are typical of golf courses in Minnesota. The turf cut height on the fairways ranged from 7/8 inches at the Baker National Golf Course to 15/32 inches at the Minikahda Club.