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Hydrologic investigations in the vicinity of the proposed Central Waste Disposal Facility, Oak Ridge National Laboratory, Tennessee [electronic resource].

Published
Oak Ridge, Tenn. : Oak Ridge National Laboratory, 1984.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description
Pages: 84 : digital, PDF file
Additional Creators
Oak Ridge National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Data collection for hydrologic evaluation of the proposed Central Waste Disposal Facility (CWDF) site began in July 1982 with biweekly measurement of streamflows at seven locations. A recording rain gage was added in December 1982. The initial data suggested that annual runoff was highest at the basin outlet and that relative groundwater losses of 25 to 30% occurred at other subbasin measuring stations. Precipitation records indicate that normal annual precipitation at the CWDF site is approximately 1282 mm, which is 4% lower than that measured at the Oak Ridge townsite station. Continuous streamflow data have been collected at five sites in the CWDF drainage since November 1983. The expected average annual runoff at the site is 60 cm or an average flow rate of 48 L/s for the 2.44-km/sup 2/ basin. Measured values for 1983-84 show that flow is quite similar to that at nearby Walker Branch Watershed. Runoff is about 45% of precipitation. Tracer studies were used to examine subsurface flow pathways near planned disposal sites to points of emergence. Fluorescein dye was injected into a swallowhole that captures flow from one of the ephemeral streams draining the area. Dye was detected at both a shallow well and at a point of emergence of groundwater along the dry surface channel at a point downgrade of the swallow hole. Groundwater velocity in the subsurface system ranged from 620 to 1240 m/d for the upper part of the pathway, and from 240 to 380 m/d over the 1900-m route between injection and emergence. A greater than 10,000-fold reduction in peak concentration of dye was estimated. 11 references, 6 figures, 11 tables.
Report Numbers
E 1.99:ornl/tm-9354
ornl/tm-9354
Subject(s)
Note
Published through SciTech Connect.
12/01/1984.
"ornl/tm-9354"
"DE85004949"
Huff, D.D.; Frederick, B.J.
Funding Information
AC05-84OR21400
View MARC record | catkey: 23778834