consideration of the relationship of the changes in land use to the other plan
elements and to water quality conditions within the watershed. The conversion
of land from rural to urban lake uses has the potential to impact on water
quality as a result of increased point and nonpoint source loadings to surface
waters. The amount of wastewater generated by industrial and municipal point
sources of pollution discharged to surface waters will also increase as areas
are converted into urban uses. In addition, the amount of stormwater runoff is
expected to increase due to an increase in impervious surfaces. The amounts of
certain nonpoint source pollutants in stormwater, such as metals and chlorides,
can also be expected to increase with urbanization.
Table XIV-1 summarizes the existing land uses in the Sauk Creek watershed in
1990 and indicates the changes in such land uses since 1975--the base year of
the initial regional water quality management plan. The watershed contains a
limited amount of urbanized areas, 90 percent of the watershed was still in
rural and other open space land uses in 1990. These rural uses included about
81 percent of the total area of the watershed in agricultural and related rural
uses, about 2 percent in woodlands, about 5 percent in surface water and wet-
lands, and about 2 percent in other open lands. The remaining 10 percent of the
total watershed was devoted to urban uses.       Existing land uses within the
watershed are shown on Map XIV-2.
Within the Sauk Creek watershed, urban development has occurred in the Village
of Fredonia and in and around the City of Port Washington.
As shown in Table XIV-1, from 1975 to 1990, urban land uses in the watershed
increased from 1,934 acres, or about 3.0 square miles, to 2,195 acres, or about
3.4 square miles, or by about 14 percent. As shown in Table XIV-1, residential
land use has increased within the watershed, from 665 acres or about 1.0 square
miles in 1975 to 798 acres, or about 1.3 square miles in 1990, a 20 percent in-
crease. Commercial and industrial lands increased from 113 acres to 140 acres,
or about 0.2 square miles, an increase of about 24 percent.
The 2,195 acres, or about 3.4 square miles of urban land uses in the watershed
as of 1990 can be compared to the staged 1990 planned level of about 2,365 acres
envisioned in the adopted year 2000 land use plan.        The current status of
development in the Sauk Creek watershed and in adjacent portions of Ozaukee
County was considered in developing the new year 2010 land use plan element
described in Chapter III for the Region as a whole.
Table XIV-2 summarizes the year 2010 planned land use conditions set forth in
the adopted year 2010 land use plan in the Sauk Creek watershed and compares the
recommended land use conditions to the 1990 conditions. Under planned land use
conditions, as described in Chapter III, urban uses are expected to increase in
and adjacent to the City of Port Washington, north and east of the Village of
Fredonia, and south and west of the Village of Belgium.
In order to meet the needs of the expected resident population and employment
envisioned under the intermediate growth-centralized land use plan future
conditions, the amount of land devoted to urban use within the Sauk Creek
watershed, as indicated in Table XIV-2, is projected to increase from the 1990
total of about 3.4 square miles, or about 10 percent of the total area of the
watershed, to about 3.8 square miles, or about 11 percent of the total area of

-613-