Naslov
IMPACT OF DANUBE-SAVA MULTIPURPOSE CANAL ON GROUNDWATER DYNAMICS

Autori
Mustać, Ivan ; Petošić, Dragutin ; Filipović, Vilim

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
XXV. Conference of the Danubian Countries on the Hydrological Forecasting and Hydrological Bases of Water Management / Balint, Gabor ; Domokos, Miklos - Budimpešta : Mentor Artis Kft, Budapest, Hungary, 2011, 113-113

ISBN
978-963-511-151-0

Skup
XXV. Conference of the Danubian Countries on the Hydrological Forecasting and Hydrological Bases of Water Management

Mjesto i datum
Budimpešta, Mađarska, 16.06.2011. - 17.06.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
Danube-Sava multipurpose canal; groundwater dynamics; piezometers; VS2DTI

Sažetak
The first written data on construction plans for a canal that would connect the rivers Danube and Sava date from 1737 ; since then, more than 14 construction variants have been considered. There is no doubt that the future multifunctional Danube-Sava Canal (MDSC) would have a strong impact on natural potentials and agricultural ecological systems, primarily on the soil water regime, mainly in its lower course, which would be constructed in the wider area of Biđ-field along the settlements Kladavac-Babina Greda-Gundinci-Sikirevci. Continuous monitoring of groundwater dynamics was carried out in the period 2001- 2010 on an area of 6 600 ha, focusing on groundwater level fluctuations in the profile to 4.0 m solum depth, using hydropedological piezometers as well as automatic Orphimedes limnimeters. Piezometers (40 piezometers to 4.0 m depth) were laid out in four lines – cross-sections (I, II, III and IV), perpendicularly to the longitudinal axis of MDSC. Ten piezometers were installed at each cross-section according to the scheme: 200, 500, 1000, 1500 and 2500 m on both sides of the canal. Piezometer lines were about 3.5 km apart from each other. Program VS2DTI Ver.1.2 was used to model the groundwater flow in the agrological profile of agricultural soils in the immediate vicinity to MDSC as well as the possible impact of the canal on groundwater level fluctuation (dynamics). The program was made by the US Geological survey, and is foreseen for modelling the two-dimensional flow and transport of matter in the vertical plane. It was confirmed by modelling that the future MDSC would continuously drain the surrounding area on locations of the selected cross-sections - profiles (I, II and III) in years of average climate. The width of the draining zone under the influence of MDSC, in which a lowering of groundwater level in agricultural soils from 1 to 50 cm at groundwater depth of 0 to 4 m relative to the ground surface is expected, would be in the range of minimal values from 370 m to 170 m and maximal values from 970 m to 390 m (that is, in the width from 485 m to 195 m to the left and right of the longitudinal canal axis). The model also indicated that in the conditions of a very deep groundwater level (>3 m from the ground surface), in profile IV, MDSC would feed the agrological profile of agricultural soil through water infiltration from the very basin. According to calculations, the width of the zone of the influence of canal feeding would range from 50 m to 250 m from the canal axis. In the hydrological conditions of dry years (e.g. the year 2003), especially during summer months, with prevalence of very deep groundwater levels (>3.0m), MDSC would feed the adjacent soils with water from the very basin, thereby reducing the drought “effect” in its bank area even without irrigation.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

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