The food security can be improved through increasing agricultural land or by more intensive agricultural managements including irrigation practices. The objectives of this study were to incorporate practical irrigation schemes into NASA Land Information System (LIS) and to investigate the impacts of the irrigation schemes on land surface states and fluxes including evapotranspiration, soil moisture, and run off in the Korean Peninsula, by applying the tool to the region. For this year, the Noah-LSM (Noah 3.2-Land Surface Model) in the LIS was selected to incorporate three irrigation schemes such as non-irrigation, flood irrigation, drip irrigation, and sprinkler irrigation schemes. However, drip irrigation and sprinkler irrigation schemes were not applied for this study, since these schemes are not commonly used in this region. The flood irrigation scheme was developed that irrigation can be turned on when the soil moisture at the first layer falls below the threshold value (25% above wilting point for this study). Moderate Resolution Imaging Spectrometer (MODIS) vegetation index were used to estimate crop growing seasons for a global experiment. The Noah-LSM was simulated to the region for 10 years (2001 to 2010) after 20 years of spin-up and investigated the hydrologic and energy flux estimates in the region. The flood irrigation scheme increased latent heat flux (Qle) and ground heat flux (Qg). However, the scheme decreased sensible heat flux (Qh). Evapotranspiration in this region with the flood irrigation scheme showed a tendency to increase over the growing season. The scheme also increased soil moistures at the first three soil layers (from surface to 0.6m deep), while there was no apparent tendency at the fourth soil layer (from 0.6 to 1.0m deep). Although the impacts of the flood irrigation scheme on land surface state and fluxes had not been evaluated against observed data, the results from the experiments showed the proposed irrigation scheme can be used to qualitatively investigate those impacts on hydrology in the Korean Peninsula.