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Effect of water availability on manufacturing employment in the Tennessee Valley Region
Author(s) -
Garrison Charles B.,
Paulson Albert S.
Publication year - 1972
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr008i002p00301
Subject(s) - streamflow , regression analysis , environmental science , hydrology (agriculture) , population , geography , linear regression , population density , variables , independence (probability theory) , mathematics , statistics , demography , geology , geotechnical engineering , drainage basin , cartography , sociology
The study indicates a significant microlocation relationship between water‐oriented manufacturing employment and water availability, where water availability is measured in terms of 7‐day, 10‐year minimum streamflow, in the 194‐county Tennessee Valley region. At the county level, chi square tests of independence indicate that concentrations of at least 500 employees in water‐oriented manufacturing (and increases of at least 250 over the period 1959–1968) are significantly related to water availability. Further, the data and tests suggest that a streamflow in the neighborhood of 400 cfs (cubic feet per second) is the critical or threshold flow necessary for the occurrence of such employment concentrations. To explain the variation in employment per river mile among small regions within the region, a regression equation with population density as the independent variable was constructed. The regression indicates that, for a difference of 10% in population density between small regions, employment per river mile varies by 8.15%.