Elevation-Derived Hydrography Data Acquisition Spec: Diff DEM 2 Sources

By NGP Standards and Specifications August 2024 (approx.)

An EDH collection area in black, with two overlapping DEM, as well as the map algebra equation.

Detailed Description

An elevation-derived hydrography project area shown in black with two overlapping source bare earth DEMs, OPR1 and OPR2. OPR1 has the most recent data, so OPR2 is subtracted from OPR1 to create the difference DEM, Diff_OPR1_2.tiff.

Sources/Usage

Public Domain.