WM-Topo Survey System

  • Internal radio available with either 900 MHz or 450 MHz frequency options
  • Ultra-rugged housing built to withstand harsh conditions 
  • 440 channel GPS and GLONASS receiver
  • GNSS receiver, antenna, battery, and radio in one unit
  • Bluetooth® connections enable wireless communication between GNSS receiver and Yuma® 2 or Nomad® handheld computers
  • USB host connection for memory stick
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The Trimble® WM-Topo™ survey system is a topographic data collection device that can be taken into hard-to-reach areas such as ditches, steep terrain, muddy fields, or fields with mature crop cover. Survey data can be used to create surface models-to help you make well-informed water management decisions.  Benefits include:


Highly Portable
The WM-Topo system can be taken into areas that are inaccessible to tractor or truck-mounted survey equipment due to poor field conditions or mature crops-allowing you to easily collect survey data by hand.



Fast Payback
The WM-Topo system pays for itself by enabling users to gather topographic survey data year round and in a variety of environments.



Data Transfer and Analysis
Topographic data collected with the WM-Topo system can be transferred to WM-Subsurface for creating a 3D model of the field.



Integrates with Drainage and Leveling Operations
Surface models created from the collected topographic data can be used to install drain pipes with the WM-Drain™ farm drainage solution or to create a leveling design for use with the FieldLevel II™ system.

Trimble Ag Software
Farm management software for desktop, online and mobile platforms.

WM-Subsurface software
Water management software that improves placement of field tile and levees to help increase crop yields.

WM-Drain farm drainage solution
Complete solution that streamlines the survey, analysis, design, installation and mapping steps of surface and subsurface drainage projects.

FieldLevel II system
Field-proven solution for the surveying, designing, and leveling steps required for land leveling and levee installation projects.