Fig. 11.3. An ingenious (but complex)
method of freshening and
re-energizing a river.
By installing pre-cast concrete guide vanes that
generate a cooling longitudinal vortex on a river
bend, which brings the growth-enhancing
substances (carbones) on the riverbed and near
the banks into contact with the oxygen in the
centre-stream; the accumulated energies from this
synthesis release nourishing sales into the river
banks between the bends.
type of discharge eventually produces the same results — silting
up followed by flooding. Such discharges also produce what has
recently been termed 'cold pollution,' which can destroy down-
stream fish life and other aquatic creatures due to the sudden
influx of far-below-normal water temperatures.
Viktor Schauberger designed a dam with outlet sluices at differ-
ent heights on the dam wall to correspond with the temperature
layers of the dam water (warmer at the surface, coolest on the bot-
tom). An automatic monitoring of air temperature would deter-
mine which outflow would discharge the water from the dam at
approximately the same temperature. The aim of this arrangement
is to remove large and therefore disruptive temperature differences
and to bring the external air temperature and the temperature of
the river water into a closer approximation (Fig. 11.3.).^2HIDDEN NATURE