USGS - science for a changing world

Kansas Water Science Center

Occurrence and Trends of Selected Metals, Trace Elements, and Organochlorine Compounds in Bottom Sediment of Tuttle Creek Lake, Kansas, USA

By K.E. Juracek

Abstract

Bathymetric and bottom-sediment cores were used to investigate the occurrence and trends of 44 metals and trace elements, and 15 organochlorine compounds in bottom sediment of Tuttle Creek Lake, a reservoir with an agricultural basin in northeast Kansas, USA. Statistically significant positive depositional trends (constituent concentration increased with decreased depth in the sediment core) were indicated for several constituents including selenium. Some of the positive trends may be related, in part, to changes in human activity (for example, increased irrigated agriculture) that occurred within the Tuttle Creek Lake Basin during the past 40 years. On the basis of available sediment-quality guidelines, median concentrations for arsenic, chromium, copper, nickel, silver, and zinc exceeded the threshold levels of concern. Organochlorine compounds either were not detected or were detected at concentrations generally less than the threshold levels of concern. Information from this study may be used to partly reconstruct historical water-quality records, to provide a present-day baseline with which to evaluate long-term changes in reservoir water and sediment quality, and to help prioritize constituents for the determination of total maximum daily loads of possible contaminants contributing to the water and sediment quality in this important water-supply reservoir.

Additional information about Reservoir Sediment Studies in Kansas can be found at: http://ks.water.usgs.gov/pages/reservoir-sediment

Juracek, K.E., 2002, Occurrence and trends of selected metals, trace elements, and organochlorine compounds in bottom sediment of Tuttle Creek Lake, Kansas, USA [abst.], in Books of Abstracts, 9th International Symposium on the Interactions Between Sediments and Water, Banff, Canada, May 5-10, 2002: International Association for Sediment Water Science, p. 28.

To request a paper copy of this abstract, email: GS-W-KS_info@usgs.gov