A Study of the Morphology and Sediment Conditions of Ponds Prior to Upstream Highway Construction

Holcomb, C. R; Virginia Highway Research Council; Virginia. Dept. of Highways

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A Study of the Morphology and Sediment Conditions of Ponds Prior to Upstream Highway Construction

1973-01-01
By Holcomb, C. R

[PDF-3.06 MB]

English

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Details:

Creators:

Holcomb, C. R
Corporate Creators:

Virginia Highway Research Council ; Virginia. Dept. of Highways

Virginia Highway Research Council ; Virginia. Dept. of Highways Less -
Subject/TRT Terms:

[+]

Environment Environmental Impacts Geotechnology Highways Hydraulics And Hydrology I26: Water Run-off - Freeze-thaw Lakes Pond Sediments--Testing--Virginia Road Construction Sedimentation Silting
Publication/ Report Number:

VHRC 72-R43
Resource Type:

Tech Report
Geographical Coverage:

Virginia ; United States

Virginia ; United States Less -
TRIS Online Accession Number:

01365483
OCLC Number:

316871104
Edition:

Final report.
Corporate Publisher:

Virginia Transportation Research Council
Abstract:

Sedimentation in ponds is an important problem for several reasons. The depletion of pond storage capacity is of major concern. Sediments also may degrade the water by burying bottom-dwelling plants and animals and may carry harmful chemicals which promote entrophication and kill aquatic life. Road construction may be a major contributor to the siltation of ponds. Disturbances due to highway construction in the Scott Run Watershed in Fairfax County, Virginia produced sediment at the rate of 80,600 tons per square mile per year at the source, and about one half of this amount was measured do•stream at a gaging station. Sediment yields on denuded land during rainstorms were found to be 10 times greater than for cultivated lands, 200 times greater than for grass areas, and 2,000 times greater than for forest lands. The following factors are likely to affect the quantity of sediment eroded from a highway construction site and deposited in a pond during a specific storm event: l. Length and degree of the exposed slope; 2. soil grain size; 3. size, depth, shape, and water level of the reservoir; 4. degree of erodibility of the soil; 5. and amount of highway construction. During the past few years several lawsuits have been filed against the Virginia Department of Highways for damages to water bodies resulting from upstream highway construction. As public awareness of environmental problems increases, the number of suits against the state is also likely to increase. This project involved the development of a scheme for determining whether or not a pond has been affected by upstream highway construction, and if so, to what degree. The project was a 'before' phase of a larger study which will investigate the parameters influencing pond siltation.
Format:

PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:682d7c7c3db82ce28e6cf921cc42a0bf0252652a522c465bfab76456140db88b
Download URL:

https://rosap.ntl.bts.gov/view/dot/38764/dot_38764_DS1.pdf
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A Study of the Morphology and Sediment Conditions of Ponds Prior to Upstream Highway Construction

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