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Suspended-sediment concentration regimes in Tennessee biological reference streams

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Abstract

Suspended-sediment-concentration (SSC) regimes of five biological reference streams in Tennessee were characterized from 15-minute SSC records spanning 1 to 4 water years (October 1 through September 30) between 2004 and 2008. These streams represent least disturbed conditions for their respective ecoregions and have exceptional biodiversity in terms of fish or aquatic invertebrates. SSC regimes in streams, when plotted in terms of duration above a given SSC at a given annual frequency such as the annual maximum or the annual tenth longest duration, can be compared directly to published biological impairment thresholds derived from experimental trials. Based on such comparison, the SSC regimes of all five reference streams reached published impairment thresholds at least 10 times per water year for all years of record. The results suggest that the published impairment thresholds are not directly applicable to streams in Tennessee and, by extension, the southeastern United States.

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Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title Suspended-sediment concentration regimes in Tennessee biological reference streams
Year Published 2010
Language English
Publisher Joint Federal Interagency Conference
Contributing office(s) Tennessee Water Science Center
Description 12 p.
Larger Work Type Conference Paper
Larger Work Title Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and sedimentation for a changing future: existing and emerging issues
Conference Title Joint Federal Interagency Conference 2010: Hydrology and sedimentation for a changing future: existing and emerging issues
Conference Location Las Vegas, Nevada
Conference Date June 27-July 1 2010
Country United States
State Tennessee
Online Only (Y/N) N
Additional Online Files (Y/N) N