Sustainable water resources management and community engagement are essential for water security. Refer-ring to the above context, this study proposed to carry out an assessment of community engagement for irrigation water management in the Nam Haad Left Irrigation Project (NHLIP). The household and community level prac- tices and the farmers’ levels of participation in irrigation water management of the NHLIP were carefully con- sidered. From respondents’ responses, the results revealed that a husband-wife partnership plays a remarkable role in irrigation water management of the NHLIP for rice farming. The results also proved that most of the respondents engage with a high participation level in managing irrigation water of the NHLIP project as illustrated by a high score of 3.80 on the five-point Likert scale. To determine the significance of each activity on farmers’ levels of participation in irrigation water management of the NHLIP, a stepwise multiple regression analysis was employed and the standardized regression equation for determining overall participation levels can be presented as: Y = 0.538x1 + 0.831x8 + 0.534x14 + 0.607x18 + 7.572. Finally, the outcomes of this study indi- s of participation in cooperating and supporting the activities related to the improvement and management of the NHLIP project.