Water continues to be the dominant factor affecting crop production. Both water excesses and deficiencies exist in spatial and temporal dimensions. Precision water management taking into account variations in time and space offers tremendous opportunity for improved management efficiencies and increased crop production. This session will address the agronomic factors that should be considered for precision water management, explore approaches for doing so, and highlight with case study examples. Controlled drainage for improved crop production continues to be one of farmers' highest priorities for land modifications. This session will also focus on all aspects of placement and timing of precision drainage management, and the realized agronomic, economic, and environmental benefits.