�Impervious
surface can channel water and nutrients into the lake
–Paved and camp roads
�1.1%
of watershed land area in 2005
Roads play an important
role in lake health (Davis et al. 1978).Their impervious nature can directly affect runoff
qualities and quantities, by channeling water toward or away from the lake.This allows a small land use area to
contribute disproportionately to phosphorus loading in a water system.
The total area for the 2003
map was calculated by measuring the roads during a road survey (see
Watershed Development: Road Survey).While this survey was conducted in 2005, it was assumed that the
roads and their respective areas did not change significantly over those two
years. Road data could not be obtained from the 1965 aerial photographs.
Depending on the quality of
the roads, 1.1% of watershed land cover may contribute a significant amount
of pollution into nearby groundwater