Water Board Backing Dams On Snake[DAHO FALLS (AP)- The Idaho Wa'er Resource Board Friday gave its backing to dams on two stretches of the Snake River.It unanimously adopted a res-elution supporting construction of the Teton Dam Projects in Fremont Coutny.Board members Ferris Kuna, Montpelier, reported ihat :i meeting with the Utah State Water Board would be held in Idaho during the coming inojiUf, with ti\e date and place to be announced.