Report on Water-supply, Water-power, the Flow of Streams and Attendant Phenomena, Volume 3

Front Cover
J. L. Murphy publishing Company, printers, 1894 - Water-supply - 448 pages
0 Reviews
 

What people are saying - Write a review

We haven't found any reviews in the usual places.

Other editions - View all

Common terms and phrases

Popular passages

Page i - Geo. H. Cook, State Geologist, to His Excellency Joel Parker, President of the Board of Managers of the Geological Survey of New Jersey, for the year 1864.
Page 9 - ... by the process which we call evaporation and formed into clouds, to be again precipitated to earth in the form of rain or snow. Of the water which falls upon the basin of a stream, a portion is evaporated directly by the sun; another large portion is taken up by...
Page 9 - Stream-flow includes the water which passes directly over the surface to the stream, and also that which is temporarily absorbed by the earth to be slowly discharged into the streams. A portion, usually extremely small, passes downward into the earth and appears neither as evaporation nor as stream- flow. It is usually too small to be considered, and we may for our purposes assume that all of the rain which falls upon a given water-shed and does not go oft' as stream-flow is evaporated, using the...
Page 199 - The river is tidal and navigable to New Milford, about 20 miles from the mouth, where navigation is cut off by low dams of the Hackensack Water Co. Navigation above Hackensack is limited to boats of light draft.
Page 37 - The draught upon ground storage in this vicinity usually sets in between May 1st and June 1st, not often before the middle of May and rarely later than June 1st. Once the draught is fairly established and the water drawn down, unless the rainfall is greater than it usually is from June to August, it is all absorbed by the dried earth and does not reach down far enough to increase the head and consequent flow of ground- water. What may be called the...
Page 68 - Alleghenies in Virginia and West Virginia. These branches, with their tributaries and the tributaries of the main stream as far down as the Shenandoah, drain a series of narrow and generally fertile valleys lying between the parallel ranges which make up the system of the Alleghenies in this region. Their slopes are not, as a rule, very great, and their beds are of gravel and sand.
Page 34 - The figures also explain the low summer flow of streams flowing from a highlycultivated water-shed. They do not necessarily explain the effect of "forests in regulating flow, since many water-sheds, although cleared of trees, are not put under cultivation but still show some change in flow. The action of forests is probably largely to retard surface-flow by means of irregular surfaces, caused by roots, fallen timber, absorbent mosses and leaf accumulation, thus holding the water until it can be taken...
Page 231 - To recapitulate, then, this branch of my subject, I may say that the stage of the river throughout the year is ordinarily as follows : January, frozen and medium height ; February and March, breaking up and high ; April, May and June, high ; July, subsiding ; August and September, low; October, low, but subject to high freshets; November, low, often very low; December, rising a little and freezing.
Page 35 - Fortunately, a much smaller proportion is so covered than is usually supposed, even in agricultural sections. Somerset county is a highly-cultivated section of the red sandstone plain. I have made an estimate of the proportion of the total area given to various crops, based on census figures, and the proportion of wooded area has been measured. Of the total area, 13 per cent. is wooded in large tracts, and 7 per cent. has .been added for scattering timber, the remainder being devoted to general farming.

Bibliographic information