How each tool works

Selects the legal parcel under your click and uses its real boundary as the analysis area for every other tool.

Builds a multi-page PDF terrain report for one parcel: shaded relief, contours, slope and aspect breakdowns, elevation statistics, and a checklist of the official records the report does not replace.

Keeps up to five places in your browser and compares their elevation, slope, winter sunlight and drainage side by side.

Highlights every patch of ground inside your area that is flatter than a chosen slope, faces a chosen direction and gets at least a chosen number of hours of winter sun.

Draws topographic contours at any interval from 0.5 m upward across your area and exports them for GIS, CAD, Google Earth, print or laser cutting.

Maps how steep every part of your area is and which compass direction each face points, with a full breakdown of slope classes and aspect shares.

Models hours of direct sun across a site on any day of the year, with shadows from terrain up to 3 km away and, where LiDAR has been flown, from trees and buildings.

Summarises the minimum, maximum, mean and range of ground elevation across an area, with a chart of how much land sits at each height.

Estimates how much earth would be cut and how much filled to level your area to a flat platform, at a height you set or at the height that balances the two.

Classifies every part of your area into one of ten landforms, such as ridge, spur, slope, hollow and valley, at a scale you choose.

Estimates the height of buildings and vegetation above the ground by subtracting the bare-earth terrain from the LiDAR surface model.

Returns the ground elevation in metres at any point you click.

Extracts the drainage channels across an area as an ordered stream network, and maps where water would pond once hollows fill, with depth, area and volume.

Maps where the shape of the land tends to concentrate moisture, from how much ground drains to each point and how flat that point is.

Maps all the land upstream of a point you click, so you can see where the water arriving at a culvert, a gully or a stream crossing comes from.

Shows which ground within 1 to 10 km can be seen from a point, for a chosen eye height, with earth curvature and refraction allowed for and, optionally, trees and buildings blocking the view.

Checks whether one point is visible from another, and if not, where the view is first blocked and by how much.

Produces a cross-section of the ground along any line, with distance, total climb and descent, and gradient.

Measures both the flat map distance and the true distance over the ground along a line, which is longer on steep terrain.

Finds a route between two points that favours gentle grades and stays under a maximum grade you set, and shows its elevation profile.

Exports the terrain for your area as contour vectors, a GeoTIFF elevation raster or a 3D surface mesh for printing and rendering.

Adds accurate ground elevation to the coordinates in a GPX, KML, GeoJSON, JSON or CSV file you already have, replacing missing or noisy GPS altitude.