Movement of tagged dredged sand at thalweg disposal sites in the Upper Mississippi River. Volume 2. Savanna Bay and Duck Creek sites
Experiments were conducted on the Upper Mississippi River at two sites, Savanna Bay and Duck Creek, to investigate the movement of dredged sand after disposal in the thalweg. These experiments are part of a larger study, which includes similar experiments conducted earlier at two other sites on the Upper Mississippi River. At the Savanna Bay site, hydraulically dredged sand was tagged with sand coated with fluorescent dye before being deposited as a pile in the thalweg. Bathymetric surveys and surficial bottom sampling were conducted on five occasions over a nine-month period following disposal to identify changes in the topography of the pile and to detect the presence of dyed sand. At the Duck Creek site, only bathymetric surveys were conducted. The general behavior of the disposal piles at these two new sites was similar to that of the piles at the first two sites. Topographic evidence of the piles disappeared, and bottom conditions similar to the predisposal conditions were reestablished following the first period of high river flows after disposal. At Savanna Bay, as had happened at the first two sites, the tagged sand remained in the main river channel as it moved downstream in response to flood currents and did not migrate into nearby border areas, backwaters, or sloughs. 6 references, 89 figures, 2 tables.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 5852423
- Report Number(s):
- ANL/EES-TM-270-Vol.2; ON: DE85010186
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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Movement of tagged dredged sand at thalweg disposal sites in the upper Mississippi River
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Related Subjects
54 ENVIRONMENTAL SCIENCES
MISSISSIPPI RIVER
DREDGING
SEDIMENTS
ENVIRONMENTAL TRANSPORT
DREDGE SPOIL
EXPERIMENTAL DATA
TRACER TECHNIQUES
DATA
INFORMATION
ISOTOPE APPLICATIONS
MASS TRANSFER
NUMERICAL DATA
RIVERS
STREAMS
SURFACE WATERS
580100* - Geology & Hydrology- (-1989)
520200 - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)