Technical Results
Impervious Surface Changes
As imperviousness increased in each
watershed (Figure 1), very different responses were found between
the two subdivisions (Figure 2). No change in runoff was seen for
the LID subdivision, but a logarithmic increase in stormflow was
found from the Traditional subdivision (Figure 2), even though precipitation showed
no trend.
More information on this study can be found in the following
reference:
Dietz, M.E., and Clausen, J.C. Stormwater runoff and pollutant
export changes with development in a traditional and low impact subdivision. Journal
of Environmental Management, in press.
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| Figure 1. Changes
in impervious cover with time in the Traditional and LID subdivisions. |
Figure 2. Changes in runoff
depth with changes in total impervious area, Traditional and
LID subdivisions.
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