Geological Survey Water-supply Paper

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U.S. Government Printing Office, 1950 - Irrigation

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Page 95 - Maxcy, KF, 1950, Report on the relation of nitrate concentrations in well waters to the occurrence of methemoglobinemia: Nati.
Page 96 - Weller, Stuart, and Sutton, AH, 1951, Geologic map of the western Kentucky fluorspar district: US Geol. Survey Mineral Inv.
Page 49 - In most waters, the conductance is so low that micromho is used as the unit of expression. The specific conductance is a measure of the ability of the water to carry an electric current and is, therefore, an indication, within rather wide limits, of the ionic strength of the solution. Many natural waters in contact only with granite, siliceous sand, well-leached soil or other difficultly soluble material, have a conductance of less than 50 micromhos.
Page ii - Secretary GEOLOGICAL SURVEY Thomas B. Nolan, Director For sale by the Superintendent of Documents, US Government Printing Office Washington 25, DC CONTENTS Patte Abstract.
Page 96 - Industrial limestones of Kentucky — No. 2 : Ky. Geol. Survey, ser. 9, Rept. Inv., no.
Page 45 - ... each vertical column of the aquifer having a base of 1 square foot as the water level falls 1 foot (Wenzel, 1942, p.
Page 30 - Thus the belt of soil moisture functions as a formidable hindrance to ground-water recharge. It is like an upstream reservoir that in general must be filled before water will pass through it to the downstream reservoirs, which in this case are the aquifers of the underlying terrane.
Page 96 - Weaver, JE, and Clements, FE, 1938, Plant ecology : New York, McGraw-Hill Book Co., 601 p.
Page 55 - Considerable evidence indicates that up to about 1.0 ppm of fluoride in water decreases the incidence of dental caries (decay of teeth) when the water is consumed by children during the period of formation of the teeth (Dean and others, 1941).
Page 24 - ... formed the depressions tend to grow larger because local surface runoff collects in them and more water then seeps down to attack the bedrock under them than elsewhere in the vicinity.

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