Buildings the cascade of water barrages of the section of the Upper Vistula contributed to the change of water relations in the valley of the river. Possessed observational material, relating to the recognitions of hydrogeological conditions on the area of the influence of the Dwory Water Barrage, allowed to conduct the analysis of the position of land waters. Using results of measurements executed in wells in the period before damming up water in the river Vistula relationships of the mirror of the ground water and water in the river Vistula were worked out. They made possible the qualification of the water level on the analysed area in the conditions swell the water in the river Vistula to the ordinate 225,50 m a.s.l., the elaboration of maps hydro-isohips and the qualification of the influence range of damming up through delimitation of the zones of the direct threat of soppy terrains situated in the environs of the locality Gromiec and Szyjki. The pronouncement of soppy areas was affirmed, about depth of covering the mirror of ground water to 0,8 m, partly soppy areas, about depth of covering the mirror of ground water from 0,8 from 1,6 m and neutral areas. ...
The possibility of enlargement of the flood safety of drained terrains of locality Zarzecze using the storage reservoir, accumulating the excess of flood waters was introduced in the work. The worked out conception of the chapter of waters from the ditch R to the pumping station channel was also presented. The lock of the valves of embankment sluices leading the waters of the ditch R to the Vistula river follows in flood conditions, by increasing the level of the water in to the Vistula river. It comes to the outflowing of water from ditch R and submergence of the terrains of the settlement Łączany-Zarzeczein the consequence of the permanent supply of water to ditch R and damming up of water in ditch in the result of the lock of the embankment sluice. In the order to attain o reduce the risk of submergence of these terrains the creation of the storage reservoir from the pumping station channel was proposed. This channel leading water to pumping station Zarzecze. Capacity of storage reservoir and the time of filling up were qualified, founding steady the supply about flow intensity equal to 2,13 m3 ∙ s-1. It was statement that the current technical condition ...
