ORS § 538.440
Whenever the City of Bend, Deschutes County, shall have acquired the right to appropriate or use from the Deschutes River at least 11 cubic feet per second of water for delivery into the feed canal belonging to Deschutes County Municipal Improvement District, which feed canal is now supplied from the Deschutes River at a diversion located in or near Bend, then the city may take from the direct flow of Tumalo Creek, in Deschutes County, not to exceed 11 cubic feet per second of water for providing a supply of water for domestic and municipal purposes; provided, however, that should the waters of the Deschutes River so acquired for the purpose of the exchange be appurtenant to lands calling for a different point of diversion, the place of use and point of diversion of the water may be changed to meet the requirements of this section.
ORS 538.440