WA SB6097

Adds federally recognized Indian tribes to the list of entities authorized to acquire land interests (fee simple, development rights, easements, covenants) to protect open space, farm, agricultural, and timberland under Washington's conservation futures program

Allows tribes to purchase "conservation futures" (perpetual development rights) on designated open space, farm, agricultural, and timberland, with authority to forbid or restrict building and require permission for improvements

Permits tribes to acquire property and convey or lease it back to original owners under covenants limiting future use, consistent with existing authority granted to counties, cities, towns, metropolitan park districts, and nonprofit conservation organizations

Includes a savings clause ensuring nothing in the chapter may be interpreted to decrease, diminish, or impair treaty rights of federally recognized Indian tribes