In Colorado, "when a government grant is made which does not reserve a right or interest that would ordinarily pass by the rules of law, and the government does no act indicating an intention to make such reservation, the grant includes all that would pass by it, as if it were a private grant." Stewart v. Lamm, 132 Colo. 484, 289 P.2d 916, 917 (1955). Defendants do not dispute that Colorado has adopted the common law with respect to ownership of stream beds.