Pocosin LakesClayton Road Block Project |
Clayton Road Block Project at Pocosin Lakes National Wildlife Refuge (NWR) in North Carolina. Published by the U.S. Fish & Wildlife Service (USFWS).
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U.S. Fish & Wildlife Service
Clayton Road Blocks Project
Pocosin Lakes
National Wildlife Refuge
Good Neighboring
in a Nutshell
We’ve been restoring hydrology
in severely ditched/drained
pocosin habitat on Pocosin
Lakes National Wildlife Refuge
by stopping the artificial
drainage of the peat soil
through the ditch system.
This work has been done
primarily to improve habitat,
reduce the frequency and
intensity of wildfire and
conserve soil.
With only the current
infrastructure in place, we can’t
rewet the soil within 1/2 mile of
our boundary because it could
cause the adjacent private
land to become wetter due to
seepage. This might impact our
neighbors.
So this project will install a
second dike and canal system
just inside some of the existing
dikes and canals located at
the Refuge boundary, so any
seepage would still remain on
Refuge land.
Approximately 2.5 miles of new
dike will be built allowing us to
rewet the soil in approximately
1,325 acres of Refuge lands
without making the adjacent
land wetter.
Water control structures and raised roads that serve as levees are used to rewet historically
drained peatlands, credit USFWS/Sara Ward.
North Carolina’s AlbemarlePamlico peninsula is the site
of the greatest pocosin acreage
in the U.S.; however, since the
1960’s, 70% of pocosin habitat
in North Carolina has been lost.
Consequently, in the early 1990’s,
the 110,000-acre Pocosin Lakes
National Wildlife Refuge was
established to conserve pocosins,
a unique forested wetland formed
on a “dome” of deep organic
peat soils. To fulfill the Refuge’s
purpose, managers aim to rewet
a total of approximately 35,000
acres of these drained soils and
restore their natural hydrology.
This particular project will restore
1325 acres and allow the water
to mimic the natural seasonal
hydrology here while maintaining
adequate road accessibility and
avoiding impacts on adjacent
private land.
What We’re Doing
Project Description
Generally, Refuge lands within 1/2 mile of
our boundary with adjacent private lands
are managed as a buffer; rain water is
not held to rewet the peat soils in order
to assure no off site impacts. The Clayton
Blocks’ project will restore approximately
1,325 acres within part of that buffer.
The Clayton Block project area has
been managed as a buffer zone because
it is bounded to the west and south by
privately owned land. In order to allow
the Refuge to rewet the soils in most
of this area, without affecting water
conditions on adjacent private properties,
a new berm will be constructed just inside
of the existing berm and canals on the
south and west sides of the project area.
The new berm is designed to prevent
hydrologic impacts to offsite areas. The
project will allow us to mimic the natural
seasonal hydrology on these Refuge
wetlands while maintaining adequate
road accessibility and avoiding impacts on
adjacent private lands.
The project will consist of several steps:
n
Build a new berm approximately 30
feet inwards from the existing canal.
U.S. Fish & Wildlife Service
This berm will be constructed using
material excavated from a new canal
inside the new berm.
n
Clayton Road Blocks Project Area
Legend
Install three new water control
structures inside the new canal system.
n
Set boards in the water control
structures at planned levels to
gradually allow rainfall to rewet
drained peat soils.
Expected Results
The project will allow the Refuge to
return lands to a seasonally-saturated
condition and manage according to its
purpose without impacting adjacent
private land. The new berm and canal
system will provide separation from
neighboring private lands, and any wetter
conditions resulting from the restoration
will be isolated to an approximate 30foot buffer strip on the Refuge lands.
In combination with previous hydrology
restoration projects, this project will
aid in providing important benefits to
terrestrial and aquatic ecosystems and
human communities:
n
Provides wildlife habitat for native
species.
n
Conserves peat soils.
n
Protects water quality by retaining
soil-associated pollutants before they
reach important estuarine waters
downstream.
n
Lessens the frequency and severity of
wildfires.
n
Aids fire suppression by providing
water management capability.
n
Provides some storm water retention
capability.
The Service is committed to preventing
water impacts associated with our
management and welcomes opportunities
to help alleviate the concerns of adjacent
landowners while still achieving our goal
of pocosin habitat restoration.
For More Information
Visit www.fws.gov/refuge/pocosin_lakes
or call Howard Phillips at 252/796 3004.
Clayton Road Blocks
Project Area
Project Area
#
The new berm will have a “core” of
mineral soil extending through the
organic soil layer to the mineral soil
layer beneath to minimize or eliminate
seepage from the restored area.
n
C11
Map 3
#
Existing Water Control Structure
¯
Planned Water Control Structure
Existing Dike/Hydrology
Management Unit Boundary
Existing Canal
Planned Canal
Planned Dike
C14
Not to Scale
#
C15
0
0.25
0.5
0.75
Miles
1
#
Black bear and her cubs, credit Jackie Orsulak.