Collect high-resolution elevation data
When your work requires higher-resolution elevation data for use at larger, zoomed-in scales, two relatively new sources can provide the added extra detail. These include true lidar collections and drone missions, both of which can be used to generate high-resolution surface elevation data. Collection of high-resolution lidar is growing rapidly, enabling 3D GIS for whole new applications.
Drone flights can also be used to generate elevation values for every photo pixel from the photos being collected. This generates a digital surface model of the height of all observed features, not just the bare-earth elevation readings.