REPORT OF THE COMMISSION OF ENGINEERS APPOINTED TO INVESTIGATE AND REPORT A PERMANENT PLAN FOR THE RECLAMATION OF THE ALLUVIAL BASIN OF THE MISSISSIPPI RIVER

Capa
 

O que estão dizendo - Escrever uma resenha

Não encontramos nenhuma resenha nos lugares comuns.

Páginas selecionadas

Outras edições - Visualizar todos

Termos e frases comuns

Passagens mais conhecidas

Página 7 - An act to provide for the appointment of a commission of engineers to investigate and report a permanent plan for the reclamation of the alluvial basin of the Mississippi River subject to inundation,'' I appointed a commission of engineers.
Página 1 - Levees and ordered to be printed. To the Senate and House of Representatives : I have the honor to transmit herewith the...
Página 42 - This was no isolated case, but was in strict accordance with general river-laws, as is fully explained on page 363, Physics and Hydraulics of the Mississippi. It is therefore carefully to be borne in mind that the maximum discharges of two floods are by no means necessarily proportional to the relative water-levels attained in them.
Página 50 - Louis was 2.3 inches in January, 4.8 inches in February, and 2.4 inches in March, showing a slight indication of the great February rains, but none whatever of those in March. Such was the condition of the rivers when, in March, a wide-spread series of furious rain-storms occurred. The belt containing them extended from the head-waters of the Washita and White Rivers of Arkansas eastward across the States of Arkansas, Missouri, Kentucky, Tennessee, western North Carolina, and western Virginia; but...
Página 42 - For any given stand there is usually more water passing in a long and rapid than in a short and slow rise; but this is not always the case, the discharge being governed by the relative stage of the water in the channel above and below. 3. The maximum discharge...
Página 2 - SEC. 3. That the sum of twenty'five thousand dollars, or so much thereof as may be necessary...
Página 51 - Cairo levees, the stations being 60 feet apart. This second swell was, of course, due to the arrival of the combined Upper Ohio, Cumberland, and Tennessee rise. After culminating, the river at Cairo fell nearly as rapidly as it had risen. (See plate.) What do these facts indicate respecting the maximum discharge into the head of the alluvial region in the flood of 1867...
Página 42 - Cairo is the first point which requires attention. It is a particularly important locality in all floods, being situated so near the head of the alluvial region that, when the source of the flood is known, a relative estimate of the maximum discharge into that district may be formed from a judicious study of the gauge indications there; but in this connection it is well to call attention to the following facts, which were fully established by repeated observations upon the Mississippi, and which,...
Página 111 - As the three floods of 1862, 1865, and 1867 will no doubt often be studied and discussed hereafter, I have thought it advisable to append a brief abstract of the most important facts collected respecting each of the main tributaries, beginning near their sources and proceeding in regular geographical order toward their mouths.
Página 53 - At no point would the water have risen to within 1 or 2 feet of the mark which would have been left by the flood of 1858 had it been strictly confined to the channel. Yet the actual water-mark of 1867 was, in general, a little higher than that of 1858. This apparent discrepancy is easily understood when it is remembered that there has never yet been a high-water mark not lowered by crevasses discharging into the swamps, the amount of the lowering varying greatly with the locality and with the peculiar...

Informações bibliográficas