Geological Survey Water-supply PaperU.S. Government Printing Office, 1955 |
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Otras ediciones - Ver todas
Términos y frases comunes
Anastasia formation annual artesian aquifers Atlantic Coastal Ridge average basin beach ridges Belle Glade Big Cypress Swamp Biscayne aquifer Biscayne Bay calcareous Caloosahatchee marl Caloosahatchee River Chione coast cone of depression Conrad contours Creek Dade County datum deposits depth developed discharge drainage drawdown drought east evaporation evapotranspiration Everglades feet above mean Figure Floridan aquifer flow fresh-water gages ground water ground-water hydrologic inches islands Kissimmee River Lake Okeechobee land surface limestone lower Mansfield Marsh mean sea level mgd per ft Miami area Miami Canal Miami oolite miles Miocene muck ocean oolite Pamlico percent period permeable Pleistocene Pliocene pumping test rainfall recharge record rock runoff sand sandy flatlands shallow shoreline Silver Bluff soils solution holes southeastern Florida southern Florida stage stations Tamiami formation terrace thickness Thompson formation Turritella U. S. Geol upper Miocene water level water table water-table
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Página 175 - The coefficient of storage is a measure of the capacity of an aquifer to store water and is defined as the volume of water released from or taken into storage per unit surface area of the aquifer per unit change in the component of head normal to that surface.
Página 153 - The porosity of a rock is its property of containing interstices. It is expressed quantitatively as the percentage of the total volume of the rock that is occupied by interstices.
Página 233 - Acre-foot (ac-ft) is the quantity of water required to cover an acre to the depth of 1 foot and is equivalent to 43,560 cubic feet.
Página 175 - Theis (1935, p. 520) introduced the very convenient term 'coefficient of transmissibility,' which is the 'field coefficient of permeability' multiplied by the thickness, in feet, of the saturated part of the aquifer. Thus the coefficient of permeability denotes a characteristic of the water-bearing material, whereas the coefficient of transmissibility denotes the analogous characteristic of the aquifer as a whole. "Natural earth materials that have been tested in the hydrologic laboratory of the...
Página 433 - D 1 129 as follows: 3.1.1 equivalent per million — a unit chemical equivalent weight of solute per million unit weights of solution. Concentration in equivalents per million is calculated by dividing concentration in parts per million by the chemical combining weight of the substance or ion. NOTE 1 — This unit also has been called "milliequivalents per litre" and "milligram equivalents per kilogram.
Página 153 - In a saturated rock the porosity is practically the percentage of the total volume of the rock that is occupied by water.
Página 436 - Commission's statement concerning a hidden drug problem : "that the barbiturates, at the present time are a hidden drug problem similar to that of opiates in the past. "That is true. For hundreds of years, and particularly in the latter part of the 19th century and the early part of the 20th century, opiates were used bv people who were trying to control their emotional and nervous problems.
Página 175 - Meinzer's units — that is, above 10. The yields of wells depend, of course, not only on the permeability of the formations they tap but also on the thickness of the formations, the draw-down of the water level, and the diameter and construction of the wells. For many places in the...
Página 770 - Bull. 16, 77 p. 1941 Stratigraphic and paleontologic studies of wells in Florida: Florida Geol. Survey Bull. 19, 89 p.
Página 436 - ... miles, would drain the waters of the Everglades into Biscayne Bay. The rivers which flow over this part of the reef come down to the sea level over a series of rapids formed upon the harder layers of the reef, and thus the full escape of the Everglade waters is prevented. In the region more to the north, the entanglement of the vegetation about the headwaters of the streams, even where they have no rapids in their beds, likewise hinders the escape of the marsh waters.