Republican River Conflict

Please note any settled or ongoing court cases associated with this conflict. How long has this dispute been going on? Please describe what the conflict is actually about. Has there been any progress made between the two parties? Where does this conflict stand now? Please use the attached source and any others that are needed.
https://www.dtnpf.com/agriculture/web/ag/news/business-inputs/article/2018/08/06/republican-river-compact-long-court