A new method called siphon-type subsurface drainage was tested to improve drainage in flooded farmland. The study compared it to traditional drainage methods using indoor tests and computer models. Results showed that siphon-type drainage increased flow rates by up to 50% compared to conventional methods. It also performed better in removing water during flooding and reduced flow rate loss as water levels decreased. The computer model accurately predicted the flow rates, with errors less than 10%. Lowering the outlet elevation increased drainage efficiency. Overall, siphon-type drainage is a promising solution for managing waterlogging and flooding in agricultural areas.