Follow the category links on the left navigation pane to locate the desired map. For example, bus route maps are located under the Transporation category.
The Fond du Lac County website provides a dynamic on-line mapping application that includes point of interest, school, land record (parcel), floodplain, zoning, topography/contour, as well as other layers that can be overlaid on aerial photographs ranging in date from 1972 to 2010.
Fond du Lac County On-line Mapping
Click the above link to access the benchmark map.
The term benchmark originates from the chiseled horizontal marks that surveyors made in stone structures, into which an angle-iron could be placed to form a "bench" for a leveling rod, thus ensuring that a leveling rod could be accurately repositioned in the same place in the future. The height of a benchmark is calculated relative to the heights of nearby benchmarks in a network extending from a fundamental benchmark, a point with a precisely known relationship to the level datum of the area, typically mean sea level. The position and height of each benchmark is shown on large-scale maps.
Source of Reference - Wikipedia about the use of benchmarks in surveying
The City of Fond du Lac Datum System is the North American Vertical Datum of 1988.
*Disclaimer - The City of Fond du Lac is providing Benchmark Data for use. Anyone using this data assumes sole responsibility for the accuracy of the data and shall, to the fullest extent permitted by law, indemnify defend and hold harmless the City of Fond du Lac from all claims, damages, losses and expenses, including attorney fees arising out of or resulting there from. Users of this information and the data contained within agree that the use of the information constitutes agreement to the terms and conditions above. When using the Benchmark Elevation Data listed, the user should always check one elevation against another for implied accuracy.
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