2.2.3. Simulated Scenarios

In total, eight scenarios were modeled. They differed in the BCs implemented at the outer boundaries (scenarios TOP or MIDDLE) and the value of *K* of the surrounding medium (10−<sup>3</sup> , 10−<sup>4</sup> , 10−<sup>5</sup> , and 10−<sup>6</sup> m/s). The objective of the scenarios was to assess the influence of the piezometric head elevation and *K* on the water exchanges and, therefore, on the *η* of the system and on the potential environmental impacts on surface water bodies. The TOP scenarios are denoted as TOP-3, TOP-4, TOP-5, and TOP-6 when the values of *K* are 10−<sup>3</sup> , 10−<sup>4</sup> , 10−<sup>5</sup> , and 10−<sup>6</sup> m/s, respectively. Similarly, the MIDDLE scenarios are denoted as MID-3, MID-4, MID-5, and MID-6 when the values of *K* are 10−<sup>3</sup> , 10−<sup>4</sup> , 10−<sup>5</sup> , and 10−<sup>6</sup> m/s, respectively.
