Search for: [Abstract = "If necessary, runoff from the lake is usually estimated from mean runoff modulus isoline. We shall intensify lake balance surveys if we wont to meet the Directive requirements. Morphometric elements can be best presented on an appropriate bathometric plan. Every lake has such a plan, but most of these plans were made as early as in the fifties and sixties of the last century, on the basis of sounding from the ice, mostly in 50 m square graticule."]

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