LAND USE CONTRIBUTIONS TO PHOSPHORUS LOADING IN AN IMPAIRED STREAM, MILL CREEK, TENNESSEE
EARTH AND ENVIRONMENTAL SCIENCE LAND USE CONTRIBUTIONS TO PHOSPHORUS LOADING IN AN IMPAIRED STREAM, MILL CREEK, TENNESSEE VENA JONES Thesis under the direction of Professor Kaye Sawyer Savage Located in Middle Tennessees Central Basin, Mill Creek is listed with EPA for water quality impairment [303(...
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ndltd-VANDERBILT-oai-VANDERBILTETD-etd-04032006-0959242013-01-08T17:16:07Z LAND USE CONTRIBUTIONS TO PHOSPHORUS LOADING IN AN IMPAIRED STREAM, MILL CREEK, TENNESSEE Jones, Vena Lynnette Geology EARTH AND ENVIRONMENTAL SCIENCE LAND USE CONTRIBUTIONS TO PHOSPHORUS LOADING IN AN IMPAIRED STREAM, MILL CREEK, TENNESSEE VENA JONES Thesis under the direction of Professor Kaye Sawyer Savage Located in Middle Tennessees Central Basin, Mill Creek is listed with EPA for water quality impairment [303(d)] from high phosphorus concentrations that affect its biogeochemical properties. Mill Creek was sampled at three locations according to land use during dry and wet weather. Imperviousness associated with land use increases downstream. Agricultural regions, MCW-A, are in the headwaters, suburban portions, MCW-B, are downstream and the lower reaches are highly urbanized and industrial, MCW-C. Water samples were filtered successively to fractions >0.65µm, 0.65>0.45µm, 0.45>0.1µm, and <0.1µm using tangential flow filtration and analyzed for total phosphorus, soluble reactive phosphate, and trace metals. Phosphate loads increased downstream. Total phosphorus and Pb increased during wet weather; other trace metals were diluted. Phosphorus was associated with fractions <0.1µm and >0.65µm. Phosphorus contributed to the stream from bedrock and soils was minor. Most contaminants associated with industry were diluted with increasing discharge; this suggests that non-point sources are inducing impairment. Increased impervious surfaces increased frequent flood peak discharge values and runoff. Urban runoff in MCW-B and MCW-C most likely increased soluble reactive phosphate concentrations in Mill Creek. Continued development will most likely contribute to higher P loads through increased runoff from impervious surfaces where overland flow has the opportunity to suspend and redistribute pollutants. The source of this P is most likely domestic during wet weather. Increased particulate phosphorus will likely increase with increased development where erosion from disturbed land surfaces is a common problem. Kaye Savage VANDERBILT 2006-04-17 text application/pdf http://etd.library.vanderbilt.edu/available/etd-04032006-095924/ http://etd.library.vanderbilt.edu/available/etd-04032006-095924/ en unrestricted I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Vanderbilt University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. |
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Geology Jones, Vena Lynnette LAND USE CONTRIBUTIONS TO PHOSPHORUS LOADING IN AN IMPAIRED STREAM, MILL CREEK, TENNESSEE |
description |
EARTH AND ENVIRONMENTAL SCIENCE
LAND USE CONTRIBUTIONS TO PHOSPHORUS LOADING IN AN IMPAIRED STREAM, MILL CREEK, TENNESSEE
VENA JONES
Thesis under the direction of Professor Kaye Sawyer Savage
Located in Middle Tennessees Central Basin, Mill Creek is listed with EPA for water quality impairment [303(d)] from high phosphorus concentrations that affect its biogeochemical properties. Mill Creek was sampled at three locations according to land use during dry and wet weather. Imperviousness associated with land use increases downstream. Agricultural regions, MCW-A, are in the headwaters, suburban portions, MCW-B, are downstream and the lower reaches are highly urbanized and industrial, MCW-C. Water samples were filtered successively to fractions >0.65µm, 0.65>0.45µm, 0.45>0.1µm, and <0.1µm using tangential flow filtration and analyzed for total phosphorus, soluble reactive phosphate, and trace metals.
Phosphate loads increased downstream. Total phosphorus and Pb increased during wet weather; other trace metals were diluted. Phosphorus was associated with fractions <0.1µm and >0.65µm. Phosphorus contributed to the stream from bedrock and soils was minor. Most contaminants associated with industry were diluted with increasing discharge; this suggests that non-point sources are inducing impairment.
Increased impervious surfaces increased frequent flood peak discharge values and runoff. Urban runoff in MCW-B and MCW-C most likely increased soluble reactive phosphate concentrations in Mill Creek. Continued development will most likely contribute to higher P loads through increased runoff from impervious surfaces where overland flow has the opportunity to suspend and redistribute pollutants. The source of this P is most likely domestic during wet weather. Increased particulate phosphorus will likely increase with increased development where erosion from disturbed land surfaces is a common problem.
|
author2 |
Kaye Savage |
author_facet |
Kaye Savage Jones, Vena Lynnette |
author |
Jones, Vena Lynnette |
author_sort |
Jones, Vena Lynnette |
title |
LAND USE CONTRIBUTIONS TO PHOSPHORUS LOADING IN AN IMPAIRED STREAM, MILL CREEK, TENNESSEE |
title_short |
LAND USE CONTRIBUTIONS TO PHOSPHORUS LOADING IN AN IMPAIRED STREAM, MILL CREEK, TENNESSEE |
title_full |
LAND USE CONTRIBUTIONS TO PHOSPHORUS LOADING IN AN IMPAIRED STREAM, MILL CREEK, TENNESSEE |
title_fullStr |
LAND USE CONTRIBUTIONS TO PHOSPHORUS LOADING IN AN IMPAIRED STREAM, MILL CREEK, TENNESSEE |
title_full_unstemmed |
LAND USE CONTRIBUTIONS TO PHOSPHORUS LOADING IN AN IMPAIRED STREAM, MILL CREEK, TENNESSEE |
title_sort |
land use contributions to phosphorus loading in an impaired stream, mill creek, tennessee |
publisher |
VANDERBILT |
publishDate |
2006 |
url |
http://etd.library.vanderbilt.edu/available/etd-04032006-095924/ |
work_keys_str_mv |
AT jonesvenalynnette landusecontributionstophosphorusloadinginanimpairedstreammillcreektennessee |
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