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Slope Map
The purpose of the Slope Analysis is to identify the areas The natural areas with the higher percentages and
that are best suited for development. The slope analysis steeper slopes are generally more expensive to
is used to guide the placement of roads and building develop (build). If these areas use large flat pads for
areas, as part of the master planning and site planning buildings, higher retaining walls and/or more earthwork
process. It also determines the best natural areas for are required. As an alternative, “grade-adaptive”
preservation, such as significant hills and arroyos. architecture and building pads require lower retaining
walls and foundation walls, and less earthwork. Steeper
The slope analysis looks at the slope pitch (angle) of the roads are required under any building program.
natural ground. It is broken into 4 ranges and expressed
as percentages (%). A lower percentage number means The 4 ranges of the slope analysis are:
that the natural slopes are flatter. A higher percentage 0-5%
number means that the natural slopes are steeper. 5-15%
15-30%
The natural areas with the lower percentages and flatter 30% and greater
slopes are generally the easiest and least expensive to
develop (build). These areas can use large flat pads for
buildings, low foundation walls, low retaining walls, less
earthwork (cuts and fills), and flatter roads.

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