Add/review crs for red_river_2018 data

Add (or review for accuracy if it already exists) crs information to red_river_2018 dataset:

• s3://mdmf/gdp/red_river_2018.zarr

It has the following THREDDS catalog entry, if that is helpful to have:

• https://cida.usgs.gov/thredds/catalog.html?dataset=cida.usgs.gov/red_river_2018