Relationships Between Local Governments and Metropolitan Watershed Management Organizations, Twin Cities Metro Area, 1959-2014

What happens when a state mandates that local governments in its major metropolis must collaborate at the watershed-scale to manage surface water? I answer this research question by investigating over three decades of intergovernmental dynamics following passage of Minnesota’s 1982 Metropolitan Area Surface Water Management Act, which required local units of government to manage surface waters through collaborative watershed management organizations. This longitudinal network data is a reconstruction from archival materials that shows how 201 local governments organize and re-organize themselves into 54 distinct watershed organizations. The earliest local government relationship in the set dates from 1959 and the latest from 2014, but the longitudinal analysis in the associated paper focuses on the 1975 to 2011 period. The data allow for longitudinal analysis of local government participation in watershed management organizations.

当一个州强制要求其主要大都市的地方政府必须在流域尺度上协作管理地表水时，会发生什么？我通过调查明尼苏达州1982年《大都市区地表水管理法案》通过后三十余年的政府间动态来回答这一研究问题——该法案要求地方政府单位通过协作性流域管理组织（collaborative watershed management organizations）来管理地表水。这份纵向网络数据（longitudinal network data）通过档案材料重构而成，展示了201个地方政府如何组织并重组为54个独立的流域管理组织。数据集中最早的地方政府关系可追溯至1959年，最晚至2014年，但相关论文中的纵向分析聚焦于1975年至2011年的时期。该数据支持对地方政府参与流域管理组织的纵向分析。