should be so used that erosion and soil-wash shall cease; that there
should be reclamation of arid and semi-arid regions by means of
irrigation, and of swamps and overflowed regions by means of drainage;
that the waters should be so conserved and used as to promote
navigation, to enable the arid regions to be reclaimed by irrigation,
and to develop power in the interests of the people; that the forests
which regulate our rivers, support our industries, and promote the
fertility and productiveness of the soil should be preserved and
perpetuated; that the minerals found so abundantly beneath the surface
should be so used as to prolong their utility; that the beauty,