engleski

Multipurpose project Programme Sava – numerical modeling of impact of Option 2A conceptual solution on groundwater

Identification of impact of Option 2A conceptual solution of the multipurpose project Programme Sava (http://zagrebnasavi.hr/sava-zagreb/) on groundwater of the Zagreb and Samobor-Zaprešić aquifers, Croatia, is presented and the results are discusses with respect to the results of previously analysed conceptual solutions of Options 0, 1 and 2. Option 0 represents technical solution that would achieve the defence from flooding and regulation of the Sava River and considers construction of sixteen control weirs in the Sava River. Option 1 is considering the construction of four hydropower plants, HPP Drenje, HPP Zagreb, HPP Prečko and HPP Podsused along with the channel Sava – Sava while Option 2 considers the construction of two hydropower plants, HPP Prečko and HPP Zaprešić as well as four small hydropower plants (SHPP), SHPP Jarun, SHPP Šanci, SHPP Petruševec and SHPP Ivanja Reka and envisages the channel Sava – Sava, same as Option 1. Alternative conceptual solution named Option 2A considers construction of 9 small hydropower plants in the Sava river and also envisages the channel Sava – Sava, same as Options 1 and 2. Regional groundwater flow model for present state as well as prediction models for built environment were developed in order to identify impact of built environment on groundwater levels of Zagreb and Samobor-Zaprešić aquifers as well as active well fields. Beside regional groundwater flow models, 2D cross-section numerical models were developed for Options 1 and 2 in order to assess seepage from HPP pools into the drainage systems and hinterland and to acquire outer boundary conditions for regional groundwater flow models.

Programme Sava ; Option 2A ; numerical modeling ; groundwater

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