Water potential of Gilan province
A- Surface water
Water entering from outside to Gilan province, 2200 million cubic meters per year
Waters of the inland rivers of Gilan province, 4163 million cubic meters per year
B- Groundwater
Groundwater volume of renewable sources, 550 million cubic meters per year (Maximum possibility of exploiting underground resources)
Therefore, the total available water in Gilan province is equivalent to 6913 million cubic meters per year.