Modeling of karst and alluvial springs discharge in the central Alborz highlands and on the Caspian southern coasts

Springs are important water resources that to study them is necessary in terms of their management and exploitation. In northern Iran, karst springs locate in the central Alborz highlands and alluvial springs on the Caspian southern coasts. Karst and alluvial springs discharge is variable because of different conditions in terms of aquifer, topography and precipitation .This study has been done to simulate karst and alluvial springs discharge and to compare their hydrologic conditions. So, 80 karst springs and 82 alluvial springs were investigated in the central Alborz and on the Caspian southern coasts. Two models were presented to simulate karst and alluvial springs discharge using Multivariate Regression analysis (SPSS software).Then, their efficiency was considered. Finally, the models and the results of regression analyses were compared. The results showed that the most important factors of karst springs discharge are aquifer formation (its porosity) and site elevation, but about alluvial springs, hydraulic conductivity of aquifer formation and aquifer depth are the most important factors.