Tribal Water Rights and the Settlement Era
Native nations hold some of the oldest and largest water rights in the West — often unquantified for a century. Settlements are now reshaping basin allocations.
Under the 1908 Winters doctrine, federal reservations carry water rights dating to the reservation's creation — making many tribal rights senior to almost all others. But for decades these rights went unquantified and undelivered.
A wave of negotiated settlements is now quantifying tribal rights and funding the infrastructure to actually deliver water to reservations, many of which still lack reliable running water. These settlements can shift large volumes within already over-allocated basins.
Tribal nations are increasingly central players in Colorado River negotiations and other basin decisions, with both senior rights and a stake in the river's long-term health.
Sources & further reading
States facing this
Related analysis
Related issues
Water Rights
In the West, water is governed by 'first in time, first in right' — a century-old legal system now colliding with scarcity, cities, and the environment.
ExploreColorado River
The river that supplies 40 million people has lost roughly a fifth of its flow since 2000, forcing a renegotiation of how seven states share the water.
ExploreAgricultural Demand
Agriculture accounts for the majority of consumptive water use in the West, making farm efficiency and water markets central to any supply solution.
Explore