Survey Online Resources

All maps are public and do not need an ArcGIS online subscription.  This replaces the Survey Research Beta map.

Adobe Acrobat Reader

Some documents are in Adobe Acrobat Reader (.PDF) format.

You may download the free software by clicking on the icon below.

Geodetic & Survey Analysis

The Geodetic & Survey Analysis Section provides support functions for County survey crews, maintains horizontal and vertical control data, and prepares legal descriptions and maps on various survey projects.

The Geodetic Section handles:

  • Global Positioning System (GPS) data and networks                                                                       
  • Survey Analysis
  • Maintenance of horizontal and vertical control data
  • Reduction and Analysis of County survey data
  • Office functions in support of County survey crews
  • Preparation of legal descriptions, plats, and maps for County projects
  • Implementation of CADD programs in support of County projects


TLMA Online Document Search Tool 
Map My County Application


Trevor Leja, Senior Land Surveyor
(951) 955-6700


4080 Lemon Street
8th Floor
PO Box 1090
Riverside, CA 92502-1090