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<br /> (Page 3 . 6-4 ,5 ) C(c•c1c; GroJ '
<br /> Natural Environmental Constraints
<br /> Cedar Grove Township contains four natural environmental 62
<br /> constraints to development activity; floodplains, water supply
<br /> watersheds, steep slopes, and poor soil conditions .
<br /> Water Supply Watersheds : The headwaters of go water supply
<br /> watersheds, serving f o`' =s inct water s stems begin i
<br /> :;:..: in Cedar
<br /> Grove Township. The watersheds of Back Creek, 404 Eno, Little
<br /> River,: Vie' Richie FiAti$41 er) d�So ith....B cxo::t.ogethe
<br /> : �...: � ::: g r cover
<br /> almost X92% "of"the Township'`s total area.
<br /> Two impoundments on the Eno River downstream of the Township,
<br /> Lake Ben Johnson and Corporation Lake, are the primary sources of
<br /> water for the Town of Hillsborough and the Orange-Alamance Water
<br /> System (OAWS serves Efland and portions of Mebane and Alamance
<br /> County) , respectively. Upstream of those two impoundments, in
<br /> Cedar Grove Township, is County-owned Lake Orange. a `Q an a is
<br /> an augmentation reservoir from which water can be reTeasedicluring
<br /> low flow periods to increase availability of water to downstream
<br /> users <::. :>':; ' '.;::. ..:. .::.
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<br /> The headwaters of the North and South Forks of the Little River
<br /> originate in the eastern third of the township and
<br /> f low»i
<br /> n
<br /> to
<br /> Durham's Little River Reservoir. °
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<br /> The western third of the Township gives rise to Back Creek, which
<br /> flows into the Back Creek Reservoir, a source of water for Graham
<br /> and Mebane. Fin : . . ..>::. ::.:.... .. .::.:. . r...m•,:;.x:....�><i.:::••:.:. ,:.>:�:.>;: .. v.:.:::..r,.v<,.;.. ;:.:<:;:.:;.::.:.:.:•'; >>...:;«.:
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<br /> ittiftW:Central>;•: z<;.
<br /> :::.;:.>::.:.:...........;;;.:.;>::.»:
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<br /> androv,i iin >:>: . . . ..,..:. . - :::;:•:•. ;;. :::>:.:;.: ;;;>:.r:::•::<;:>! .............:..............::::::::.::::...::<.:.>:;;:<.:»:.:>:::;
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<br /> While these reservoirs do not directly serve Cedar Grove
<br /> Township, they do serve Township residents who work or shop in
<br /> Graham, Mebane, or Durham. Water system interconnections and
<br /> contractual agreements additionally create the potential for
<br /> water from these reservoirs to serve Orange County residents.
<br /> Floodplain: The majority of the Township's 100-year floodplain
<br /> lies adjacent to five waterways; the North Fork and South Fork of
<br /> the Little River, the East Fork and West Fork of the Eno River,
<br /> and Back Creek. Because the headwaters of these streams lie in
<br /> the Township, the stream valleys are relatively narrow and the
<br /> extent of flooding during a 100 year flood is not great. Along
<br /> Back Creek and the two forks of the Eno River the floodplain
<br /> rarely exceeds 500 feet from the center of the stream and up to
<br /> 800 feet along the two forks of the Little River. Floodplain
<br /> covers approximately 8 .5% of the Township, some 4 ,430 acres .
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