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Article 11 Environmental Standards
11-30 Swift Creek Water Supply Watershed
Wake County Unified Development Code
11-10
(A)
The inner 50 feet (“Zone 1”) of required 100
-foot buffers along perennial streams that is
not covered by a conservation easement must be labeled on the plat as a “reserved
conservation parcel” and restricted from future use or conveyance as a development lot.
Reserved conservation parcels must be dedicated to
a property owners’ association or
recognized land conservation agency.
(B)
Reserved conservation parcels and remnants are exempt from the lot area and width
standards of the underlying zoning district and from UDO standards requiring frontage on a
public or private road, provided that a pedestrian access easement is provided to the parcel,
with a minimum width of 10 feet.
(C)
Under the reserve parcel option, development lots may not be platted within the inner 50
feet of required 100-foot buffers along perennial streams.
11-25
Density and Impervious Surface Calculations
11-25-1
The land area included within conservation easements and reserved conservation parcels
will be included in calculating the allowable density for a cluster or open space subdivision.
11-25-2
The land area included within conservation easements and reserved conservation parcels
will be included in calculating the allowable impervious surface coverage within a
subdivision.
Sections 11-26 through 11-29 are reserved for future use
Part 3
Special Watershed Areas
11-30
Swift Creek Water Supply Watershed
11-30-1
Development in the Swift Creek Water Supply Watershed is subject to the requirements of
the Swift Creek Land Management Plan in addition to other applicable standards of this
ordinance. See also Article 9 of this ordinance.
11-30-2
All residential and commercial properties require a preliminary site plan prepared by a
licensed professional land surveyor, landscape architect, architect, or engineer.
11-30-3
An as-built plan prepared by a licensed professional land surveyor is required for all lots
before a Certificate of Occupancy may be issued.
11-30-4
In addition to the standards of the underlying zoning districts, the following standards apply
to all land within the Swift Creek Water Supply Watershed:
Standards
Critical Area
Non-Critical Area
Rural
Urban
Rural
Suburban – New
Urban - New
Existing Urban
Limited
Res*
Limited
Res*
Res Nonres
Res
Nonres
Res
Nonres Res & Nonres
Maximum Density
(DU/acre)
0.5
2.5
1
n/a
2.5
n/a
6 east of Holly
Springs Rd.; may
exceed 6 west of
Holly Springs Rd.
n/a Res. Controlled
by underlying
zoning; Nonres.
n/a
Max. Impervious
Surface Ratio (%)
[8]
6
6 [1]
12 [2] 12 [2]
12 [3]
12 [3]
12 [4]
12 [4] 12 [4]
Impoundments and
Maintenance [5]
Allowed
[9]
Required if over 12% impervious, public or private maintained
Municipal Sewer [6] Prohibited
[7]
Required if
over 6%
Prohibited [7]
Required if over 12% impervious