In the case of Nebraska v. Wyoming et al., 1944, the state of Nebraska filed a complaint against Wyoming and Colorado over water rights to the North Platte River. The river originates in Colorado, flows through Wyoming, and then into Nebraska. Each state had developed irrigation systems dependent on this river's flow for agriculture purposes. However, due to increased usage by all three states over time, there was not enough water available during dry periods causing disputes between them. Nebraska claimed that it had prior appropriation rights (a principle in water law where first-in-time is first-in-right) because its settlers were using the waters before those from other states did so extensively; therefore they should have priority access to these waters especially during times of shortage. The Supreme Court appointed a Special Master who conducted extensive hearings and investigations into historical use patterns and hydrological conditions along with reviewing legal principles applicable under such circumstances. Ultimately, while recognizing that equitable apportionment among competing States required consideration of many factors beyond mere chronological priority of appropriation or relative quantities taken by each State at any given period - including physical & climatic conditions as well as practical impacts upon respective interests - court concluded that no decree could be entered until further data was gathered regarding actual consumption within each State.

In the dissenting opinion for Nebraska v. Wyoming et al., 1944, it was argued that the majority's decision to divide water from the North Platte River based on an equitable apportionment principle was flawed. The dissenting justices believed this approach failed to consider each state’s unique needs and circumstances adequately. They contended that a more appropriate solution would have been to allocate water resources according to priority of appropriation or "first in time, first in right" doctrine which is widely recognized in western states' laws where water scarcity is common. This method respects historical usage patterns and provides predictability for future use planning, they argued. Furthermore, they expressed concern about federal overreach into matters traditionally handled by individual states such as allocation of intrastate natural resources.