WM-Subsurface Software

WM-Subsurface (formerly known as Farm Works Surface) is farm drainage software that works with the Trimble® WM-Drain™ farm drainage solution. WM-Subsurface ensures the optimal placement of tile and surface drains in both surface and sub-surface drainage water management projects, helping to drain fields adequately and increase crop yields. Easily overlay other layers such as yield or soil types to help visualize the field from different perspectives.

The farm drainage software installs on desktop computers utilizing Microsoft® Windows® 7 or higher.

Downloads and Manuals
Trimble WM-Subsurface Software
Trimble WM-Subsurface Pipe Sizing

Automatic Pipe Sizing

Calculate the recommended pipe size for all pipes within a given design, as well as generate an estimate on total cost and material required for the drainage project.  Automatic pipe sizing helps you quickly and efficiently produce optimal drainage designs while reducing your overall costs.

Tributary Lines

  • Allow your farm drainage software to determine the various watershed zones of the field to assist with main, submain, and lateral pipe placement.
  • Enable flow arrows and tributary lines to assist with tracing the natural surface water flows.

Drainage Lines

  • Utilize the drawing tools to tie laterals to mains, create parallel lateral spacings, and clip drainage lines.
  • Layout and design drainage tile by size, pipe type, phase, then enter the minimum depth, maximum depth, and optimum grade for each.
  • Utilize the design check feature to confirm that all drainage lines flow correctly.
  • Easily make design adjustments based on vertical profile and set or change direction of water outlet.

Levee Creation

  • Create levee paths from topography data based on contour interval and implement turn radius for proper placement of irrigation levees.

What are our customers saying?

We highly recommend WM-Subsurface for the layout of field tile. Designs that used to take us days using a laser are now completed within minutes or hours.”

– Andrew Zimmerman, Hicksville, OH

“The software is able to track exactly how much slope is on the pipe, and how many acres are coming in each line, so I am able to do a very accurate job of sizing the system and do it very quickly.”

Joey Schlatter, Francesville, IN

Product Comparison

FeaturesFarmer StarterFarmer CoreFarmer Pro
Farm SetupUser logins1Up to 5Up to 5Up to 5
Manage client/farm/field names with boundaries
Farm OperationsManage guidance lines
AutoSync™ resources, as-applied data, and bluetooth tags between Precision-IQ Displays and the cloud 2
Import/export or use third-party APIs to get data to/from precision farming displays
Track real-time equipment location, current status, and utilization history
Wirelessly send prescriptions to displays
Create Precision-IQ Display Work Order in web or mobile for remote task set-up and monitoring
Create Standard Work Orders and assign to people to monitor their manual completion
Includes dashboard for weather forecasting and commodity price tracking 3
Farm RecordsCreate detailed field records for seed, chemical, fertilizer, harvest, and other applications
Add materials and track purchases and usage by field with costs
Generate compliance reports with coverage or as-applied and task details
Access Precision-IQ as-applied data in shapefile format to use in other applications
Process yield data with yield cleaning tool
Create reports for seed, fertilizer, chemical usage, and field/crop profitability
View basic weather with option for upgrading to Ag Premium Weather
VRA ToolsUse drawing tools to layout management zones and create prescriptions
Utilize the mobile app for grid or zone soil sampling, including navigation to sample sites
Grain MarketingTrack bin inventory
Manage grain contracts and market position statements
In-Season MonitoringView Crop Health Imagery for each field
Record crop scouting events and create product application recommendations
Import UAV imagery
1 Additional user logins for Farmer Core and Farmer Pro can be purchased separately.
2 AutoSync automatically connects all your smartphones, computers, and Trimble displays (using the Precision-IQ™ software). Each connected Trimble display requires a Display Connection with modem and data plan or a third-party wifi adapter.
3 Cash bid prices currently available only in North America.

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