Environmentalists say silt should have been cleared from the river bed months ago and that too many high embankments have caused undue pressure during the monsoon months.
Several internal culverts control the flow of water within the wetland and the outer perimeter is delimited by high embankments with no connection to the rest of the island.
(b) Tidal flow in the study site is restricted by high embankments over most of its perimeter with two inlets from the Hunter River and a number of internal channels and culverts.
Indeed, high embankments have served to raise the level of several rivers above that of the surrounding countryside; when a breach occurs, the result is disaster.Soil erosion is particularly bad in the Himalayan foothills where most north Indian rivers rise.
To reduce earth pressures acting on buried structures installed under high embankments, the induced trench method has been recommended and applied in practice for several decades.
But the maximum thaw depths of the high embankments are very much influenced by the roadbed strike, and it sharply changes with the variation of the embankment heights and climatic warming.
Reducing the high embankments associated with road construction especially in low-land areas to within the design flood level, will offer project overall cost reduction amidst enhancing environmental friendliness.
High embankments should protect much of the city center, but the floods expected on Tuesday would cover historic Kampa Island, a favorite tourist destination in the shadow of Prague Castle, parts of the Old Town near the medieval Jewish Cemetery, the working-class district of Liben and all the main islands in the Vltava.
"In a rather deep hole, in a curve of the Medlock and surrounded on all four sides by tall factories and high embankments, covered with buildings, stand two groups of about 200 cottages in which live about 4,000 human beings, most of them Irish.
On the infrastructure side, sites with tall viaducts and high embankments call for attention.
