LaSalle County Topographic Maps (Illinois)

Soil and Water Conservation offices in LaSalle County, Illinois provide information on conservation and management for natural resources. As part of these efforts, they develop, implement, and enforce policies to protect natural resources. Soil and Water Conservation offices maintain topographic maps in order to monitor erosion, ground and surface water, stormwater runoff, irrigation, flood zones, and water management practices. These LaSalle County topography maps may be available to the public on Soil and Water Conservation websites.

La Salle County Soil and Water Conservation Ottawa IL 1691 North 31st Road 61350 815-433-0665


Clerks in LaSalle County, Illinois maintain public records for a county or local government, which includes a range of types of documents. As part of their duties, Clerks maintain detailed local maps, including LaSalle County topographic maps. These maps show elevations, place names, rivers, lakes, and other bodies of water, and may include zoning information related to flood zones or earthquake hazards. LaSalle County Clerks may also hold historic topographic maps, including USGS maps and GIS maps. These maps are often available online at the Clerk's website.

Earlville City Clerk Earlville IL 210 West Railroad Street 60518 815-246-9588

La Salle City Clerk LaSalle IL 745 2nd Street 61301 815-223-0077

La Salle Clerk Ottawa IL 119 West Madison Street, Ste 200 61350 815-433-0774

Lasalle County Clerk Ottawa IL PO Box 430 61350 815-434-8202

Leland Village Clerk Leland IL 285 West Genessee Street 60531 815-495-9530

Mendota City Clerk Mendota IL 800 Washington Street 61342 815-539-7459

Oglesby City Clerk Oglesby IL 128 West Walnut Street 61348 815-883-5122

Peru City Clerk Peru IL 1727 4th Street 61354 815-223-0061

Recorders of Deeds in LaSalle County, Illinois maintain real estate ownership documents to ensure the accuracy of property and land records. In addition to deeds, LaSalle County Recorders of Deeds also have detailed county and local maps that show property lines and building information, including LaSalle County topographic maps. These maps show elevations, water depths, geographic features, and may include aerial photos or shaded relief images. Recorders of Deeds may provide online access to their topographic maps on their websites.

La Salle County Recorder of Deeds Ottawa IL 707 East Etna Road 61350 815-434-8226


Assessors in LaSalle County, Illinois are responsible for determining the value of taxable property within a county or local area. These property value assessments are used to levy property taxes. In addition to property values, Assessors maintain detailed LaSalle County maps that show parcel boundaries and buildings, including topographic maps. These LaSalle County topography maps show elevations, shorelines, place names, and geographic features. They may also include information related to natural disasters such as floods or earthquakes. Assessors may make topographic maps available on their websites.

La Salle Township Assessor LaSalle IL 931 1st Street 61301 815-223-0807

Lasalle County Assessor's Office Ottawa IL 707 East Etna Road 61350 815-434-8233