Agenda - 11-01-1993 - VIII-A - Laserfiche WebLink

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//- From Treyburn rezoning application Treyburn is virtually surrounded by water. Lake Hydrology Michie , to the north , supplies Durham' s water. Falls Lake , to the southeast , is Raleigh' s source. The Little River Reservoir, to be completed by January 1986 , lies to the west of the site and will augment Durham' s water supply. The Eno River , south of Treyburn , runs east-to-west. It joins with the Little river, which runs through Treyburn , to feed Falls Lake. The Flat River, running from Lake Michie to Falls Lake , is to the east. All three of these rivers have an average width of 30 to 40 feet although this varies along their length. Three main watersheds have been defined by the ridges on the site ; the Little River Watershed , the Eno River Watershed , and the Flat River watershed. The Little River Watershed is the largest on the Treyburn property although only a small portion actually drains into the reservoir. The majority drains into the Little River. The western boundary of this watershed will ultimately define the Water Quality Critical Area. All of Treyburn is in the watershed of the Fall River reservoir and drains into class C portions of the lake. However, there are two other watersheds within the Flat River; the Little River and the Eno River watersheds. Approximately 300 acres of the 100 year floodplain lies within the Little River watershed. This area can be used for recreation or as pervious areas of developable Iparcels . The Eno River Watershed lies in the southern portion of the site. The smallest of the three, it drains into the Eno river. ' There are seven perennial streams on the site. The size of these streams fluctuates with the amount of rainfall . The importance of their preservation is irecognized. Scattered throughout the Treyburn property are approximately six pockets of water (agricultured ponds) ranging in size from one to five acres. These small water bodies can be used as amenities and potential sources of irrigation supply. •e 2.6.1 _ .