References and other links:
The state of Colorado’s rules that regulate Designated Ground Water, including water in the Ogallala within the Northern High Plains and Southern High Plains Designated Ground Water Basins, are: “Rules and Regulations for the Management and Control of Designated Ground Water”, most recently re-amended on April 14, 2017.
A thumbnail expandable map containing these two Designated Ground Water Basins is available here. Within those two Designated Groundwater Basins, nine Districts are identifiable on the map referenced above. Rules for these groundwater management districts are available here.