Preliminary integrated geologic map databases for the United States: Delaware, Maryland, New York, Pennsylvania, and Virginia

Dicken, Connie L.; Nicholson, Suzanne W.; Horton, John D.; Kinney, Scott A.; Gunther, Gregory; Foose, Michael P.; Mueller, Julia A.L.

doi:10.3133/ofr20051325

Cited by 32 publications

(14 citation statements)

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“…The area draining to the downstream station is underlain by dolostone and limestone (66%) and sandstone and shale (34%) (Dicken et al. ). Elevations range from 270 m at the lower reaches to 890 m in the Massanutten Mountains on the eastern side of the watershed.…”

Section: Methodsmentioning

confidence: 99%

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Sediment Fingerprinting to Delineate Sources of Sediment in the Agricultural and Forested Smith Creek Watershed, Virginia, USA

Gellis

Sanisaca

2018

J American Water Resour Assoc

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The sediment fingerprinting approach was used to apportion fine‐grained sediment to cropland, pasture, forests, and streambanks in the agricultural and forested Smith Creek, watershed, Virginia. Smith Creek is a showcase study area in the Chesapeake Bay watershed, where management actions to reduce nutrients and sediment are being monitored. Analyses of suspended sediment at the downstream and upstream sampling sites indicated streambanks were the major source of sediment (76% downstream and 70% upstream). Current management strategies proposed to reduce sediment loadings for Smith Creek do not target streambanks as a source of sediment, whereas the results of this study indicate that management strategies to reduce sediment loads in Smith Creek may be effective if directed toward managing streambank erosion. The results of this study also highlight the utility of sediment fingerprinting as a management tool to identify sediment sources.

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Section: Methodsmentioning

confidence: 99%

“…), and bedrock is 58% dolostone/limestone and 42% sandstone/shale (Dicken et al. ). Average annual daily discharge recorded at the U.S. Geological Survey (USGS) gage, 1961–2016, was 2.14 m 3 /s (USGS ).…”

Section: Methodsmentioning

confidence: 99%

Sediment Fingerprinting to Delineate Sources of Sediment in the Agricultural and Forested Smith Creek Watershed, Virginia, USA

Gellis

Sanisaca

2018

J American Water Resour Assoc

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“…The catchments are in the Piedmont Plateau Physiographic Province, with underlying crystalline bedrock consisting of a phyllite/slate unit (Dicken et al, ). The CSPA topography is characterized by rolling hills, varying between 110 and 215 m above sea level, with mean basin slopes ranging from 6% to 11%.…”

Section: Methodsmentioning

confidence: 99%

Effectiveness of landscape‐based green infrastructure for stormwater management in suburban catchments

Woznicki

Hondula

Jarnagin

2018

Hydrological Processes

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Land cover changes associated with urbanization have negative effects on downstream ecosystems. Contemporary urban development attempts to mitigate these effects by designing stormwater infrastructure to mimic predevelopment hydrology, but their performance is highly variable. This study used in situ monitoring of recently built neighbourhoods to evaluate the catchment-scale effectiveness of landscape decentralized stormwater control measures (SCMs) in the form of street connected vegetated swales for reducing runoff volumes and flow rates relative to curb-and-gutter infrastructure. Effectiveness of the SCMs was quantified by monitoring runoff for 8 months at the outlets of 4 suburban catchments (0.76-5.25 ha) in Maryland, USA. Three "grey" catchments installed curb-and-gutter stormwater conveyances, whereas the fourth "green" catchment built parcel-level vegetated swales. The catchment with decentralized SCMs reduced runoff, runoff ratio, and peak runoff compared with the grey infrastructure catchments. In addition, the green catchment delayed runoff, resulting in longer precipitation-runoff lag times. Runoff ratios across the monitoring period were 0.13 at the green catchment and 0.37, 0.35, and 0.18 at the 3 grey catchments. Runoff only commenced after 6 mm of precipitation at the decentralized SCM catchment, whereas runoff occurred even during the smallest events at the grey catchments. However, as precipitation magnitudes reached 20 mm, the green catchment runoff characteristics were similar to those at the grey catchments, which made up 37% of the total precipitation in only 10 of 72 events. Therefore, volume-based reduction goals for stormwater using decentralized SCMs such as vegetated swales require additional redundant SCMs in a treatment train as source control and/or end-of-pipe detention to capture a larger fraction of runoff and more effectively mimic predevelopment hydrology for the relatively rare but larger precipitation events.

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“…Topography (a: The National Map, https://nationalmap.gov/index.html), geology (b: Dicken et al. ), and land use (c: Homer et al. ) of the Smith Creek watershed.…”

Section: Methodsmentioning

confidence: 99%

Floodplain Trapping and Cycling Compared to Streambank Erosion of Sediment and Nutrients in an Agricultural Watershed

Gillespie

Noe

Hupp

et al. 2018

J American Water Resour Assoc

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Floodplains and streambanks can positively and negatively influence downstream water quality through interacting geomorphic and biogeochemical processes. Few studies have measured those processes in agricultural watersheds. We measured inputs (floodplain sedimentation and dissolved inorganic loading), cycling (floodplain soil nitrogen [N] and phosphorus [P] mineralization), and losses (bank erosion) of sediment, N, and P longitudinally in stream reaches of Smith Creek, an agricultural watershed in the Valley and Ridge physiographic province. All study reaches were net depositional (floodplain deposition > bank erosion), had high N and P sedimentation and loading rates to the floodplain, high soil concentrations of N and P, and high rates of floodplain soil N and P mineralization. High sediment, N, and P inputs to floodplains are attributed to agricultural activity in the region. Rates of P mineralization were much greater than those measured in other studies of nontidal floodplains that used the same method. Floodplain connectivity and sediment deposition decreased longitudinally, contrary to patterns in most watersheds. The net trapping function of Smith Creek floodplains indicates a benefit to water quality. Further research is needed to determine if future decreases in floodplain deposition, continued bank erosion, and the potential for nitrate leaching from nutrient‐enriched floodplain soils could pose a long‐term source of sediment and nutrients to downstream rivers.

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Preliminary integrated geologic map databases for the United States: Delaware, Maryland, New York, Pennsylvania, and Virginia

Cited by 32 publications

References 0 publications

Sediment Fingerprinting to Delineate Sources of Sediment in the Agricultural and Forested Smith Creek Watershed, Virginia, USA

Sediment Fingerprinting to Delineate Sources of Sediment in the Agricultural and Forested Smith Creek Watershed, Virginia, USA

Effectiveness of landscape‐based green infrastructure for stormwater management in suburban catchments

Floodplain Trapping and Cycling Compared to Streambank Erosion of Sediment and Nutrients in an Agricultural Watershed

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