In summer, farmers in a large part of The Netherlands are fully rain water-dependent for the watering of their crops, as both surface and groundwater sources are brackish to saline. In winter an abundance of fresh surface water is rapidly discharged to keep the land dry. Here, regional implementation of aquifer storage and recovery (ASR) was considered to alleviate this temporal mismatch between supply and demand for the agricultural area of Wolphaartsdijk. Both the regional implementation as well as the sole availability of a highly saline (5 to 18 g Cl/l) aquifer provide challenging storage conditions. The potential for ASR in the area was evaluated by determining the potential winter intake of surface water based on the available amount and injection constraints. Although the calculated total availability was abundant to overcome the seasonal mismatch, the injectable volume was limited to 30-60% due to the uneven temporal distribution of surface water winter discharge. Freshwater demand was estimated to be 25-50% of the injectable available volume, therefore putting a constraint on the minimum required ASR recovery efficiency (RE). Using numerical MODFLOW6 simulations, the achievable recovery efficiency was assessed considering the use of conventional fully penetrating wells (FPWs), horizontal directionally drilled wells (HDDWs) and vertical multiple partially penetrating wells (MPPWs). Simulation results indicated that for the aquifer conditions the use of FPWs is unsuitable, but that RE’s of 20%-70% are achievable with MPPWs and HDDWs, strongly depending on subsurface conditions and the applied infiltration volume. Sufficiently high infiltration volumes, implicating a few larger ASR systems in the area rather than many small ones, could be sufficient to provide the required freshwater for the farmers in the Wolphaartsdijk area despite the challenging conditions. However, field testing is required to allow more accurate assessment of the location suitability and optimize design in such saline conditions.