METODOLOGIJA PREDIKCIJE REŽIMA PODZEMNIH VODA U USLOVIMA UREĐENJA PROSTORA NA LEVOJ OBALI DUNAVA U NOVOM SADU

The left bank of the Danube in the area of Novi Sad, specifically in the Kamenička Ada and Ribarsko ostrvo zones, is currently an unprotected, hydrotechnically undeveloped, and non-urbanized area. Contemporary city development trends emphasize utilizing riverbanks for multifunctional purposes. For the left bank of the Danube in the Kamenička Ada and Ribarsko Ostrvo zones, it is proposed to shift the existing defense (flood protection) line of the embankment approximately 500 meters closer to the riverbed. The arrangement of the protected area formed in this manner, in accordance with the defined project documentation, involves the creation of a rowing path to replace the existing Šodroš backwater of the Danube. The concept for the rowing path envisions establishing direct hydraulic contact with the aquifer while ensuring a consistently maintained water level. This approach ensures its hydraulic role as a regulator of the groundwater regime in the area. As part of developing the General Urban Plan for this area, it was necessary to assess the impact of the proposed changes on the groundwater regime. To assess the impact of the planned works on groundwater regime changes, a hydrodynamic groundwater flow model was created for the given area. The model aims to define and quantify the changes that would occur in an acceptable engineering manner. Accordingly, the hydrodynamic model was developed, calibrated and verified, and predictive calculations were performed based on defined computational scenarios. By comparing the calculation results for the current state with those for the planned state, the impact of the proposed changes on the groundwater regime was assessed and quantified. The analysis of the obtained results revealed that shifting the embankment closer to the Danube does not significantly affect the groundwater regime. Constructing the rowing track under the given premises would have a positive impact on the groundwater regime in the area. During periods of high Danube water levels, the rowing path would act as a drain, collecting excess groundwater. Conversely, during low water levels in the Danube and aquifer, it would replenish the aquifer, compensating for water deficits.