The management of transboundary water resources between the united states, Mexico and Canada is changing. For about 100 years the governments have depended on two institutions --the International Joint Commission (U.S.-Canada) and the International Boundary and Water Commission (U.S.-Mexico)....

Policy evolution was characterized by Charles Lindblom three decades ago as "fragmented, disjointed incrementalism. " He argued incrementalism made the best use of very limited theory and data upon which to base decisions. This was a maj or intellectual challenge to the advocates of...