Abstract
This paper portrays a polycentric governance system by exploring the evolution of its structure and the interdependencies of its policymaking venues. It utilizes a semi-automated approach developed from the institutional grammar to analyze four policymaking venues by their 55 public policies adopted from 2007 through 2019 in the context of oil and gas development in Colorado, USA. The results show that this governance system continuously evolves through the adoption of public policies, which modifies its constellation of actors, issues, rules, and deontics (i.e., imperatives). In analyzing the content of these policies, we show how the four policymaking venues display interdependencies as well as distinct emphases. The conclusion summarizes the contributions and raises challenges for advancing knowledge about polycentricity.