Extract the files into your /art/terrain/ directory and overwrite the files.
Backup: If you are unsure if you will like the grapical mod, please backup the files before you overwrite them. Otherwise you will have to reinstall Civ3 to get your original graphic files back.
A few notes from the artist:
I felt that the rivers in the game weren't river-looking enough. I felt they needed to have some depth into the ground and more lush green around it. There maybe too much green, but it pays off when the river runs through a forest or jungle, it looks really cool.
Contact:
Icq: 70204663
Email: icedan@myrealbox.com
Handles: Icedan, Sn00py.
Screenshot of Mod:
(low quality)
Other Mods made by myself can be found at Apolyton.net in the Civ3 Files section under the Forums.