At any location with LiDAR elevation coverage (that's all of the US and these areas for Canada), drawing around a field or land area AOI allows you to automatically generate multiple advanced drainage mapping layers.

NOW YOU CAN MAP UP TO ONE MILLION ACRES AT A TIME! 

HD Flow is a high-resolution flow mapping layer that shows you exactly how water moves over the land. This is your secret weapon for effective drainage planning! Adjusting the slider let's you see how many acres drain to each flow route segment at the field level, easily identifying not only the best drain placement routes, but also where the most important drains are. On larger regions, you'll see major flow paths, and you can always export the computed flow in KML for deeper anaylsis in GIS software.

The Depressions map layer (created at the same time as HD Flow) shows you depressional areas within the field or landscape. These are sinks, or low-lying areas that have no natural drainage. Using the on-screen slider, you can adjust the view to see only deeper depressions as required, up to 30cm / ~1ft (export to your GIS software for more detailed analysis). When combined with the HD Flow map, this is often all that is required to export into grade control software like Ditch Assist™ to show you exactly where to make your drains for the most effective surface drainage - remember, whatever you see on the map you can export that view and overlay it on the map in Ditch Assist!

As you move the slider for the Slope Mask layer, the first areas that become transparent are the flattest parts of the field or project area. As you continue advancing, you'll be left with only the steepest slope regions highlighted. In addition to helping you identify steep areas with high erosion potentials and the best sites for grassed waterways, this layer can also be used to identify the most level sites within an area for future construction and other projects. And, like all the other generated layers, it can be exported for further anaylisis in GIS software when required.

Wetness Potential shows you the areas that are most prone to waterlogging, but not necessarily classified as depressions. When moving the slider from right to left, the first areas highlighted are likely the first that will become waterlogged based on flow and slope characteristics of the land. Wetness potential helps you identify parts of the field that may require more effective drainage, and can be particularly useful when designing tile drainage systems to help identify which areas might require tighter tile spacings.

Users are also applying wetness and depression mapping in residential areas, helping identify homes built on moisture-prone terrain—often linked to basement water issues.

Geo-Surface Pro delivers advanced surface and tile drainage design tools—just like high-end desktop software, but in your browser.

Draw or GPS a proposed drain route to instantly view the terrain profile. Add a best-fit or constant-grade line to simulate how your machine control will perform in the field.
See estimated start depths, cubic yards to move, and check grades at a glance. Use connection validation to ensure every lateral joins the main correctly—whether it’s tile or surface drainage.

Go to the field with a plan—not a guess.

Geo-Surface Pro runs entirely in your web browser, so it works seamlessly on any device.

Design drainage systems on your PC or Mac, then open the same project on your phone or tablet in the field—where built-in geolocation helps you follow and stake out your runs with precision.

Easily save and resume drainage design projects anytime.

Need a quick reference layer? Instantly export map images showing whatever’s on your screen—including flow routes, elevation, or design lines—perfect for importing into Ditch Assist™ or other mapping tools.

With Geo-Surface Pro, your data is yours to keep.

Need the LiDAR you're viewing in QGIS or ArcGIS? Just one click and it’s downloaded to your hard drive. Export flow routes as KML files—ready for use in any GIS software or for easy viewing in Google Earth or Google Earth Pro. Want to import your depressions layer into QGIS? No problem, just save it to your hard drive! Likewise with the slope and wetness potential layers you generate. It's your data, you own it!

And we’re constantly expanding what you can generate and export, with new layers and features added regularly.