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<br />Water yield improvement includes quality considerations as well
<br />as quantity and change in timing of flows. These Forest Service pro-
<br />grams are based on a background of scientific knowledge. They are
<br />applied by personnel witi1 the administrative and technical skills
<br />prerequisite to the job to be done.
<br />
<br />The Forest Service is also participating in studies on sedimen-
<br />tation, water yield, and municipal supply watersheds on national
<br />forest lands with universities and research organizations.
<br />
<br />Research on Artificial Ground Water Recharge
<br />
<br />Donald L. Miles, Extension Irrigation Specialist, Colorado
<br />State University, Fort Collins, Colorado, told the Committee that
<br />tl"aditional concepts of Hater resources management are ~entered
<br />around storage in surface reservoirs. However, ground water aquifers
<br />within the Missouri Basin have potential storage capacities many
<br />times as great as all the surface reservoirs combined.
<br />
<br />Ground water reservoirs offer many advantages over surface
<br />storage, most of which are related to more efficient use of our
<br />water resources. These reservoirs are ~aiting for us to provide
<br />the physical, political, social, and economic machinery that will
<br />make their use possi,ble.
<br />
<br />A substantial amount of artificial recharge is now taking place
<br />in our river valleys as a result of canal seepage and deep percolation
<br />from irrigation,. Pumping of this water can provide a valuable sour'ce
<br />of irrigation water and can solve the drainage problems as well. To
<br />date, only a small portion of this potential has been tapped. Ho"ever,
<br />any use of this water supply must protect senior water rights.
<br />
<br />Very little precipitation reaches established water courses and
<br />much less ever finds its way into major rivers. Most 'of it is lost
<br />by evaporation. Therefore, more water can be saved if precipitation
<br />is recharged as near the point where it falls as possible. Very
<br />promising research is now being conducted on methods of recharging
<br />directly into the land surface. These methods are likely to be most
<br />feasible in areas where extreme water shortages make water more valuable.
<br />
<br />The Future for Agricultural Exports
<br />
<br />~l. L. Upchurch, Administrator, Economic Research Service, U. S.
<br />Department of Agriculture, Washin~ton, D. C., discussed the factors
<br />relating to the nature and extent of foreign markets for U. S. agri-
<br />cultural products. He indicated that as a general rule the product
<br />
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