PURPOSE: To prevent environmental disruption caused by water-intake by a method wherein quality and quantity of water, including groundwater, in water-intake points scattered in various locations are measured, evaluation indexes therefor are calculated, based on the measurement data, and quantity of water-intake at each of water-intake points is determined therewith.
CONSTITUTION: Data for the water temperature, pH, the degree of muddiness, and the water level detected by a sensor 6A for water-intake source and an area sensor 6B provided to water-intake points A, B and C in a lake or a river are sent in the form of electric signal to a water environment measurement device 1000. The sensor signals are then converted into numerical data and sent respectively to an areal evaluation device 2000 and a water-intake source evaluation device 3000, and evaluation indexes are calculated there. Changes in demand for water supply are estimated with a demand estimation device 4000, based on interrelationship between the various detected data and the past data. Then, an intake operation controlling device 5000 is operated, based on the above-mentioned data, and water-intake is executed at each of the water-intake points A, B and C by operation of pumps 4A. Sewage-processed water is sent to a water-intake point where deterioration of environment is observed. Thereby environmental disruption caused by water-intake can be prevented.
WATANABE SHOJI
HORI YOSHINARI
OOBUCHI MISAKO
KAGEYAMA KOJI
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