->Not only is this not canon, I also have no idea why they are associated with this planet. The background note even associates them with Rigel III. -- Capricorn 16:26, August 13, 2011 (UTC)
At some time prior to 2285, the people of the Argus River region were in conflict with the planetary government. A significant legal precedent arose from the peace pact between the two parties which stated that "All beings may not be created equal yet shall be given equal opportunity and treatment under the law." (Star Trek IV: The Voyage Home)
The source of this appeared in the script for the movie, but because Spock's questions were appearing simultaneously on three different screens, this reference remained unseen to the viewer.
->Self-admitted to be non-canon. And also the reference is Argus, which may refer to other things then the river. -- Capricorn 16:26, August 13, 2011 (UTC)
Rigel IV also appears to be home of primitive "hill people" in the Argus River region known for their carvings described in "Wolf in the Fold". These "hill people" may or may not be the same race of reptilians described above.
->First sentence is canon and thus moved to main article, second sentence removed in accordance with removal of Rigellians. -- Capricorn 16:26, August 13, 2011 (UTC)