Maps & GIS


Geographic Information Systems

Downloadable files and maps as PDFs

View '2015-2016 Warren County Highway Map' 
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Warren County Online Mapping

other GIS Maps


If you are interested in finding a specific monument to help with surveying or would simply like to find out more information, here are the following resources:

Survey Monument Database

Map of Geodetic Control Point

A "GPS monument" is simply a specific place that's exact
coordinates have been studied and documented. A majority
of Warren County’s GPS monuments are half-foot wide holes
bored several feet into the ground, filled with concrete, then
capped with small brass disks with a cross hair and ID number
inscribed on the top. They are flush with the ground and can
sometimes be difficult to find.

Historically called "Survey Monuments", for many decades these
positions of known latitude and longitude have been used by
various groups for many purposes. Most often, surveyors use
them as a point of reference from which to begin their charts.
Quite often, they are used to assist in determining exactly
where a new house is being built and how close the construction
comes to being within a potentially dangerous floodplain.

In the past few years, Warren County has been using Global Positioning Systems (GPS) to more accurately place monuments. The old method required a surveyor to daisy-chain from one known point out to where the new point needs to be placed. This could be very time consuming and especially difficult in remote areas with poor access. In contrast, GPS technology has very good coverage in all areas and can be used anywhere.
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©  Warren County Engineer's Office (WCEO)

210 W Main Street, Lebanon, Ohio 45036
Tel: (513) 695-3301 | Fax: (513) 695-7714

105 Markey Rd, Lebanon, Ohio 45036
Tel: (513) 695-3336 | Fax: (513) 695-3323