Link to spatialreference.org

[FloodHydrology]

In the "Reproject Raster Data" section, I would suggest adding a "data tip" highlighting that learners can find common spatial reference systems (CRS) codes at spatialreference.org. Consider adding this data tip to the end of the "Reproject Rasters" section. Below is some example text:

Data Tip
In some cases, you may need to reproject your spatial data to a new project. If you do not have the CRS code, you can look up common CRS codes at spatialreference.org. For the examples we've shown here, we are actually using the Proj4 formatting. Here's a link to the UTM 18N code: https://spatialreference.org/ref/epsg/26918/.

[jsta]

Good idea! I wonder if people have a preference for https://spatialreference.org or https://epsg.io

@FloodHydrology Would you be willing to submit a Pull Request?