An efficient agriculture, taking in consideration the climatic conditions existent in Romania, can be practiced only with the support of efficient land reclamation and improvement systems. The land drainage systems are playing an important role in achieving the desired targets. The paper will present comparisons between the results obtained with DrenVSubIr and Espadren in computing the head losses (horizontal, vertical, radial and at entrance in drain) for some areas characterized by humidity excess from Bihor County.