To compare the conventional permanent flood irrigation regime with the intermittent irrigation regime utilizing mole drainage in Hashemi variety rice fields, a factorial experiment was conducted using a randomized complete block design with three replications during the 2020-2021 crop year at the Faculty of Agricultural Sciences, University of Guilan. The experimental factors included three levels of drainage treatments (D0: no drainage, D1: mole drainage without gravel, and D2: mole drainage with gravel) and two irrigation regimens (I1: permanent flooding until the end of the growth period and I2: intermittent irrigation starting after the tillering stage with a 5-day irrigation interval until the end of the growth period). The results showed that the highest grain yield was achieved under the I1 irrigation regime, with a yield of 7601.4 kg/ha, while the I2 regime yielded 6655.0 kg/ha, indicating a 12.45% decrease in grain yield for I2 despite a 22% reduction in water consumption. Additionally, interaction effects revealed that the highest dry matter yield of 18849.0 kg/ha and water productivity based on dry matter of 1.57 kg/m³ were observed in treatments D1×I1 and D1×I2, respectively. Therefore, for optimal grain yield and dry matter production under conditions without water limitation, the D1×I1 treatment is recommended, while in scenarios with water limitations, the D1×I2 treatment is suggested for achieving higher water productivity indices based on both grain yield and dry matter, providing viable options for rice cultivation in the Rasht region.