DUWC'S
Stream and Wetland Assessment Management Park
(SWAMP) |
|||||||||
PROJECT RATIONALE Headwater wetlands are important for improving water
quality and quantity in the watershed and for
reducing storm runoff. Unfortunately, most of the headwater wetlands in EPA
has expressed a distinct concern about degraded
water quality in the tributary watersheds that feed
New
Hope Creek's poor water quality has hisrtorically
been due to high nutrient concentrations (N and P),
sediment load, and coliform bacteria between the
confluence with
The
Nutrient-rich stormwater
runoff inputs from Duke University West Campus and
adjacent suburban and urban development, Rapid rates of erosion
within the creek system due to an incised and
straightened stream profile (Figure
2) associated with high percentages of
impervious surface (20.6%) in the 497 hectare
watershed and rapid deliveries of drainage following
storm events, A disconnected hydrology
between the creek and the adjacent floodplain due to
channel incising, and Elevated fecal coliforms (Figure 3) from adjoining
municipal sewer lines (See Figure
1 ) that
can and do overflow during storm events.
The
original three-phase restoration of the |
|||||||||
|
|||||||||
|
|||||||||
REFERENCES NCDENR/DWQ/WQS-PB. 2003. NCDENR/DWQ/WRP. 2001. Watershed
Restoration Plan for the |
|||||||||
|