Pamphlets on Forest Economics, Volume 41915 - Economics |
From inside the book
Results 1-5 of 96
Page 1
... silt- ing . 1 2 Regimen and turbidity of the main stream systems in the United States - Continued . Rivers of the Middle Atlantic Coast region_ . Page Sources of solid burden of streams_ . Relative value of forest and other cover in ...
... silt- ing . 1 2 Regimen and turbidity of the main stream systems in the United States - Continued . Rivers of the Middle Atlantic Coast region_ . Page Sources of solid burden of streams_ . Relative value of forest and other cover in ...
Page 2
... silt deposited above the dam . To do so would often mean merely passing it to a reservoir lower down on the stream . It is suggested that the proposed Boulder Canyon Reservoir on the Colorado River be flushed , after draining it , once ...
... silt deposited above the dam . To do so would often mean merely passing it to a reservoir lower down on the stream . It is suggested that the proposed Boulder Canyon Reservoir on the Colorado River be flushed , after draining it , once ...
Page 3
... silt more easily held in suspension do not seem in all cases to silt flush , or they do so very slowly . There is a relatively rapid silting on the upper portions of the reservoirs . The silting then proceeds less rapidly until a stage ...
... silt more easily held in suspension do not seem in all cases to silt flush , or they do so very slowly . There is a relatively rapid silting on the upper portions of the reservoirs . The silting then proceeds less rapidly until a stage ...
Page 4
... silt , much of which is deposited , destroying reservoir space and increasing the cost of power or filling navigable channels . Later these deposits are removed at the expense of the general public , when a careful exercise by the State ...
... silt , much of which is deposited , destroying reservoir space and increasing the cost of power or filling navigable channels . Later these deposits are removed at the expense of the general public , when a careful exercise by the State ...
Page ii
PHOTO BY THORNDYKE SAVILLE , N. C. GEOLOGICAL AND ECONOMIC SURVEY REMOVING SILT FROM RESERVOIR FIG . 1. - Reservoir on Deep River , N. C. Pondage so reduced by siltage that twice a year it is necessary to draw down the water to allow the ...
PHOTO BY THORNDYKE SAVILLE , N. C. GEOLOGICAL AND ECONOMIC SURVEY REMOVING SILT FROM RESERVOIR FIG . 1. - Reservoir on Deep River , N. C. Pondage so reduced by siltage that twice a year it is necessary to draw down the water to allow the ...
Common terms and phrases
acres agriculture all-American canal American amount annual assessment average basin Biscarrosse Board bonds British California canal cent channel Colorado River commission Committee conservation construction cost crops cyanamid process deforestation district drainage drainage basin dunes economic effect engineering erosion estimated evaporation expenditures exports fact farm Federal Government feet flood control forest forest cover forest land forestry humus Imperial Imperial Valley important improvement inches increase industry influence of forests interest irrigation Lake levees ment method mining Mississippi River Missouri Missouri River mountains Muscle Shoals navigation nitrogen nitrogen fixation period plant precipitation present problem production proposed protection rain rainfall region reservoir result Rio Puerco run-off sand silt single tax slopes snow soil southern square miles storage stream flow surface Survey tariff taxation Taxpayers timber tion tons trade trees tributaries United Valley vegetation Waldes watershed
Popular passages
Page 6 - No public forest reservation shall be established, except to improve and protect the forest within the reservation, or for the purpose of securing favorable conditions of water flows, and to furnish a continuous supply of timber for the use and necessities of citizens of the United States...
Page 32 - That to enable the state of Arkansas to construct the necessary levees and drains to reclaim the swamp and overflowed lands therein, the whole of those swamp and overflowed lands made unfit thereby for cultivation, which shall remain unsold at the passage of this act, shall be and the same are hereby granted to said state.
Page 66 - BROWN (J. Croumbie), LL.D. Reboisement in France; or, Records of the Replanting of the Alps, the Cevennes, and the Pyrenees with Trees, Herbage, and Bush. Demy 8vo. Cloth, price I2s.
Page 137 - All patents granted, or preemption or homesteads allowed, shall be subject to any vested and accrued water rights, or rights to ditches and reservoirs used in connection with such water rights, as may have been acquired under or recognized by this section.
Page 137 - That whenever by priority of possession rights to the use of water for mining, agricultural, manufacturing, or other purposes have vested and accrued and the same are recognized and acknowledged by the local customs, laws, and the decisions of courts, the possessors and owners of such vested rights shall be maintained and protected in the same...
Page 4 - But the value of property results from the use to which it is put, and varies with the profitableness of that use, present and prospective, actual and anticipated. There is no pecuniary value outside of that which results from such use.
Page 91 - Tables and Results of the Precipitation, in Rain and Snow, in the United States, and at some stations in adjacent parts of North America, and in Central and South America.
Page 33 - That penstocks or other similar facilities adapted to possible future use in the development of hydroelectric power shall be installed in any dam herein authorized when approved by the Secretary of War upon the recommendation of the Chief of Engineers and of the Federal Power Commission.
Page 54 - Plaisia, which disappeared during the entire time that the mountain remained cleared of its forests (from the end of the eighteenth century to the middle of the nineteenth), and reappeared 30 years ago, when the work of reforesting the slope had been finished.