scholarly journals Floodplain Geomorphology and Response to Hurricanes: Lower Pee Dee Basin, South Carolina

2021 ◽  
Author(s):  
Thomas Williams ◽  
Bo Song ◽  
Daniel Hitchcock ◽  
Thomas O'Halloran
Keyword(s):  
South Carolina ◽  
Coastal Plain ◽  
Forested Wetlands ◽  
Forested Wetland ◽  
Large Role ◽  
River Flooding ◽  
River Terraces ◽  
Overbank Flow ◽  
Pee Dee ◽  
Pee Dee River

Undeveloped forested wetlands in the valleys of coastal plain rivers can play a large role in storing floodwater and attenuating river flooding. In the lower Pee Dee, Little Pee Dee, and Lynches Rivers, these wetlands played a large role in mitigating downstream flooding following Hurricane Florence. Wetland forest flood mitigation was most effective for large flows in the Great Pee Dee River, where flooding on former river terraces determined the course of overbank flow and the potential storage of floodwaters. Floodwater storage and attenuation of water level were less effective if larger flows were limited to the Little Pee Dee River. Large rains prior to Hurricane Matthew, and to a lesser extent Tropical Storm Bertha, caused the forested wetland to be a source of additional flow, although with little increase in peak stage.

scholarly journals Distribution and Characterization of Forested Wetlands in the Carolinas and Virginia

1997 ◽  
Vol 21 (2) ◽  
pp. 64-70 ◽  
Author(s):  
Mark J. Brown
Keyword(s):  
South Carolina ◽  
Forest Type ◽  
Volume Growth ◽  
Forested Wetlands ◽  
Wetland Hydrology ◽  
Hydric Soils ◽  
Forested Wetland ◽  
Forest Inventories ◽  
Privately Owned

Abstract Recent forest inventories of North Carolina, South Carolina, and Virginia, included sampling for hydric vegetation, hydric soils, and wetland hydrology. Forest samples that met all 3 of these criteria were classified as forested wetland. This study characterizes wetland forests by extent, owner, age, forest type, physiography, volume, growth, and removals, and evaluates its contribution to the timber supply. Wetland stands comprise 8.1 million ac, or 17% of the forests in the 3 States. They are over 90% privately owned, they vary widely by type and physiography, and they contribute 21% of all removals. Classification of wetland area based simply on broad management class and physiography will result in inaccurate estimates. South. J. Appl. For. 21(2):64-70.

Migration of the Pee Dee River system inferred from ancestral paleochannels underlying the South Carolina Grand Strand and Long Bay inner shelf

2006 ◽  
Vol 118 (5-6) ◽  
pp. 533-549 ◽  
Author(s):  
W. E. Baldwin ◽  
R. A. Morton ◽  
T. R. Putney ◽  
M. P. Katuna ◽  
M. S. Harris ◽  
...  
Keyword(s):  
South Carolina ◽  
River System ◽  
The South ◽  
Inner Shelf ◽  
Pee Dee ◽  
Long Bay ◽  
Pee Dee River

scholarly journals Assessment of carbon storage potential of forested wetland soils as affected by urbanization degree in two different physiographic provinces of Virginia, USA

2021 ◽  
Author(s):  
Kathryn Ledford ◽  
Stephanie Schmidt ◽  
Changwoo Ahn
Keyword(s):  
Carbon Storage ◽  
Coastal Plain ◽  
Forested Wetlands ◽  
Significant Degree ◽  
Total Carbon ◽  
Forested Wetland ◽  
Wetland Soils ◽  
Urban Wetlands ◽  
Significant Difference ◽  
Storage Potential

Abstract This study assessed carbon storage potential in terms of total carbon (TC) and total carbon stocks (TC stocks) in soils of four forested wetlands in Northern Virginia along with associated soil physicochemistry [e.g., soil pH, bulk density (Db), and gravimetric soil moisture (GSM)]. The study sites were selected across two vastly different degrees of urbanization (urban [U]; non-urban [N]) and the two main physiographic provinces of the region (Piedmont; Coastal Plain). Soils were sampled and analyzed at three depth intervals (0-10cm; 10-20cm; 20-30cm). No significant differences were found in TC (3.07 ± 0.31% [U]; 3.82 ± 0.40%; [N]) or TC stocks (2.81 ± 0.35 kg∙m− 2 [U]; 3.58 ± 0.28 kg∙m− 2 [N]) between urbanization degrees (p > 0.05). There was no significant difference in TC stocks by physiographic province (p > 0.05), however, Coastal Plain wetland soils had higher TC than the Piedmont wetlands (4.32 ± 0.41%; 2.57 ± 0.22%, p < 0.05). Db and GSM were significantly different along urbanization degree and physiography, and were highly correlated to TC, being able to estimate the total variability of TC to a significant degree (R2 = 0.39 and R2 = 0.47, all p < 0.05). The outcome shows that urban wetlands fairly mirror the carbon storage potential of non-urban wetlands and more likely so in the Coastal Plain than in the Piedmont, especially in their top 10 cm of soils. Further studies may be warranted across an urbanizing landscape to elucidate carbon storage potentials of urban wetlands that can combat urban carbon emissions.

scholarly journals Hydraulic Geometry Curves in the Pee Dee Watershed

2015 ◽  
pp. 63-69
Author(s):  
Smoot Z.T. ◽  
A.D. Jayakaran ◽  
D.M. Park ◽  
D.R. Hitchcock
Keyword(s):  
North Carolina ◽  
South Carolina ◽  
Catchment Area ◽  
Stream Restoration ◽  
Hydraulic Geometry ◽  
Bankfull Discharge ◽  
Pee Dee ◽  
Water Conveyance ◽  
Pee Dee River ◽  
Stream Instability

Hydraulic bankfull geometry or regional curves are a useful metric for evaluating stream stability and planning stream restoration projects. Streams and tributaries within the Middle Pee Dee River Basin (MPDRB) in South Carolina drain an agrarian and forested landscape characterized by water conveyance structures, such as active and historical ditches which support forestry and agriculture. While streams in the region are generally stable, pockets of this landscape are beginning to face increasing pressure from development with signs of stream instability apparent in several locations as evidenced by streams in and around the urbanizing areas around Darlington and Florence, SC. In order to provide a foundation for potential stream restoration projects in the area, 15 sites in the MPDRB were selected on the basis of catchment area, in categories of small (km2), small-medium (50-500 km2), medium (500-1000 km2), and large (>1000 km2). Bankfull geometries, channel substrate, flow and water temperature were measured at all the sites and a set of regional hydraulic geometry curves developed. The frequency of bankfull flows that occurred over the period of sampling were also estimated to document floodplain connectivity. Results suggest that bankfull dimensions in the MPDRB were well correlated with bankfull discharge and drainage area. The results showed that hydraulic geometry in the region were similar to those measured in a similar physiographic region in North Carolina. The study also shows that streams in the MPDRB experience bankfull exceeding flows much more frequently than streams in other parts of the country, but at a frequency that is comparable to streams in the coastal plains of North Carolina.

Limited gene flow in Uca minax (LeConte 1855) along a tidally influenced river system

2014 ◽  
Vol 9 (1) ◽  
pp. 28-36 ◽  
Author(s):  
Joseph Staton ◽  
Stephen Borgianini ◽  
Ian Gibson ◽  
Renae Brodie ◽  
Thomas Greig
Keyword(s):  
South Carolina ◽  
Transport Model ◽  
River System ◽  
Larval Transport ◽  
Population Subdivision ◽  
Salt Intrusion ◽  
Exact Test ◽  
Winyah Bay ◽  
Pee Dee ◽  
Pee Dee River

AbstractFor crab larvae, swimming behaviors coupled with the movement of tides suggests that larvae can normally move upstream within estuaries by avoiding ebb tides and actively swimming during flood tides (i.e., flood-tide transport [FTT]). Recently, a 1-D transport model incorporating larval behavior predicted that opposing forces of river discharge and tidal amplitude in the Pee Dee River/Winyah Bay system of South Carolina, USA, could limit dispersal within a single estuary for downstream transport as well as become a dispersal barrier to recruitment of late stage larvae to the freshwater adult habitats of Uca minax (LeConte 1855). We sequenced 394-bp of the mitochondrial cytochrome apoenzyme b for 226 adult U. minax, from four locales along a 49-km stretch of the Pee Dee River/Winyah Bay estuary, above and below the boundary of salt intrusion. Results of an analysis of molecular variance (AMOVA) and an exact test of population differentiation showed a small, but statistically significant (α=0.05) population subdivision among adults of the 4 subpopulations, as well as all subpopulations being significantly differentiated (α=0.05). This pattern fitted with model predictions, which implies that larval transport within the tidally influenced river system is limited.

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