Elinor Ostrom was very interested in common pool resources, and in the “Beyond Markets and States,” article she also included research about this. In this article she focused studying water industries that were both privately and publicly owned. More specifically she studied the “overdraft groundwater basin on the coast and watching saltwater intrusion threaten the possibility of long term use” (Ostrom, page 641.) However, that was not the only area that she focused on in her research. In addition, she included police industry studies, and an 80 metropolitan areas study. Ostrom used many different types of models to show her research and prove her point. For example she used a model where she showed the four different types of goods, which
