This activity is one of a series of 17 teacher-developed instructional activities for geography at the secondary grade level described in SO 009 140. The simulation investigates land-use conflict between the government and the Seneca Indian nation. Given data about a proposed dam project which would destroy an Indian reservation but protect recreation areas, railroad lines, and roads from flooding, students play roles of Indian leaders, senators, journalists, and concerned citizens. The objectives of the exercise are to help students become aware of the complexities involved in land-use conflicts and to comprehend that the solutions are not always acceptable to all. In an inductive learning process, students read newspapers, listen to broadcasts, study maps, discuss their positions with other groups, and role-play. A debriefing, the key to the success in the simulation, follows the activity. The debriefing is designed to clarify for students the fact that the game's value is not in the resulting decision about construction of the dam but rather is in the various skills developed, attitudes involved, learning processes used, and content learned from the game. Detailed descriptions are given for each of the four to six class periods that are needed to complete the activity. Included are instructions, roles, and quotes from Indian leaders, senators, journalists, and concerned citizens. (DB)