File:American forests (17525198623).jpg

Title: American forests
Identifier: americanforests08natiuoft (find matches)
Year: [1] (s)
Authors: National Irrigation Association (U. S. ); New Jersey Forestry Association; South Jersey Woodmen's Association; American Forestry Association
Subjects: Forests and forestry -- Periodicals
Publisher: Washington (etc. ) American Forestry Association (etc. )
Contributing Library: Robarts - University of Toronto
Digitizing Sponsor: MSN

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I902. FORESTRY AND IRRIGATION. 289 ■supply in natural or arti- ficial reservoirs, either of which collects the drain- age water from a consider- able area surrounding it, or from a brook or river. Seldom a year passes when some contagious disease does not spread through towns or cities as a result of impure drinking water. Frequentl)' the reservoirs become drj' owing to the uneven flow of the streams upon which the)' depend. These streams, having bare v\'atersheds, flow in tor- rents in the spring, and much of the water is wasted. Later in the sea- son they run dry, and the small pools formed in their basins become stagnant. To these stagnant pools the germs of disease have free access and in them find the conditions for devel- opment. After the first heav)' rain they are washed into the reservoir below, sometimes contaminating the entire water supply of large cities. The planting of forest trees on watersheds has not been much practiced as yet, but the necessity for it is attracting the attention of some of the most prominent water com- panies in America. All pastures and bare lands on such watersheds should be covered with forest trees, and, whenever natural reproduction cannot be depended upon, planting should be resorted to. with the ultimate purpose of lumbering. Figures can now be produced which show that planting may be practiced without loss. It therefore becomes a problem which should be carefully considered by every water company having wa.ste or idle lands. The effects of an evenh' distrib- iited forest on the watersheds are as fol- lows : purification of the water, regu- lation of the flow, prevention of erosion, and hence of turbidity, cooling and shad-
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PIvANTED WHITE AND RED PINES, NEW H.AMPSHIRE. TREES IN THE FOREGROUND HAVE BEEN ATTACKED BY THE WHITE PINE WEEVIL, EFFECT OF WHICH IS SHOWN IN THE DOUBLE LEADERS. ing effect, conversion of the watershed lands into a beautiful park, and event- ually practical lumbering at a profit on the whole investment. An example of practical watershed planting on a large scale may be found at Clinton, Mass., where the Metropoli- tan Water Board, which supplies Boston and many surrounding cities with water, is planting i, 500 acres in White Pine and Hard Maple, according to plans prepared by the Bureau of Forestry. Planting is being done on the old farms, pastures, and bare, waste lands upon the watershed of their immense reservoir. Areas which already contain forest trees will be man- aged with the idea of producing a crop of timber from this natural growth.

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