U.S. Army stationing is a constant multi-scale process. Large scale stationing, which is identified with strategic realignments, requires some level of modeling to determine whether the movement of tactical equipment and large numbers of personnel is both economical and continues to meet future long-term strategic requirements. This work explored how climate change implications on water resources may affect military installations in the future, and used that information to outline the WAter Stress Projection (WASP) model, which serves as a decision support system tool that integrates water stressors resulting from global climate change and regional growth to assess the availability of water to an installation in the future. WASP is a tool that provides a scalable solution to incorporate water into the U.S. Army stationing process and to generate a maximum number of personnel at an installation. To test the impact of climate change on the United States Army, the model was applied to five case study installations located across the continental United States in a variety of climate zones.