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Licensed Illinois land surveyors mapping elevations, contours and site features for design and construction across Ottawa and LaSalle County.
Licensed Illinois land surveyors · Sealed & recorded to Illinois professional standards
Home › Services › Topographical Land Surveys › Ottawa, IL
Ottawa sits at the meeting of the Illinois and Fox rivers and serves as the seat of LaSalle County, a historic river-and-rail town wrapped around two active floodplains. Topographic surveys here support everything from downtown redevelopment and riverfront parcels to grading and drainage plans that have to account for how water moves off a site. Accurate elevation and contour mapping gives engineers and designers a dependable base for permitting near the rivers.
A topographic survey maps the elevations, contours and natural and man-made features of a site — grades, structures, utilities, trees and drainage — giving architects and engineers the data they need to design accurately and secure permits.
The Pi Surveying process — clear, sealed, and ready for your project.
As the LaSalle County seat with roughly 18,800 residents, Ottawa spans several townships including South Ottawa, Dayton, Rutland and Wallace, and its character is defined by the confluence of the Illinois and Fox rivers right at the edge of downtown. Deeds and plats for local parcels are recorded with the LaSalle County Recorder of Deeds in Ottawa. Because the two rivers carry substantial FEMA Special Flood Hazard Areas through and around the city, a topographic survey is often the first step in confirming grades, mapping structures and drainage patterns, and giving a design team the elevation control needed for site and civil work. That matters as much for an infill commercial lot near the river as it does for a residential addition set back on higher ground.
A topographic survey maps the existing elevations, contours, structures, utilities and drainage on your Ottawa parcel so engineers and architects have an accurate base for design, grading and permitting. It is commonly required for new construction, additions and site or civil work, especially near the Illinois and Fox river corridors.
The survey captures ground elevations and how the land slopes, which is essential input for grading, drainage design and floodplain analysis. Given the FEMA Special Flood Hazard Areas along the Illinois and Fox rivers, that elevation data helps your design team plan how water moves across and off the site.
Land records, deeds and plats for Ottawa are recorded with the LaSalle County Recorder of Deeds, located in Ottawa, the county seat.
Pi Surveying provides the full range of land surveying services for Ottawa property owners and builders:
We also serve nearby LaSalle County communities:
Get started on your next project with Pi Surveying’s expert land surveying services. Contact us today to schedule your survey and get accurate and reliable results.
Send us your property address and a licensed Illinois land surveyor will prepare a quote for your project.
Pi Surveying, located in Oak Brook, a suburb of Chicago, Illinois, is a professional land surveying design firm that provides land surveys for both the private and commercial sector.