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Because you are creating a conceptual model not based on real-world data, I would recommend SketchUp. The free version has all the modeling capabilities you will need and the software is very intuitive. Once you go through a few online video tutorials, you will be able to start creating 3D models fairly quickly. A while back I posted some SketchUp ...


Instead of proposing a different approach to the USLE, here is how to calculate changes in slope. 1 - calculate slope in degrees 2 - calculate slope in percent using the output of step 1 as your input While calculating slope from elevation data would give you percental changes in height, using a slope map as your input will result in percental changes in ...

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