Water is far too valuable of a resource to be disposed as a waste. Working Water presents the work of Denver landscape architecture firm Wenk Associates, highlighting their projects that treat stormwater, and the infrastructure that controls it, as a resource that supports functioning natural systems and enhanced urban open space. Built projects illustrate how stormwater runoff can be directed to support an intimate private garden, to the large-scale redevelopment of derelict industrial lands in Milwaukee organized around a stormwater park and open space system. Planning projects range from a plan for a surface stormwater system developed incrementally for a redeveloping urban district in central Denver, to a multi-generational plan for restoration of the Los Angeles River that will require profound changes in stormwater management policies and practice for full implementation. The final chapter describes the challenges, strategies, and lessons learned over the firm’s 37-year history as part of implementing new approaches to infrastructure design that can withstand the test of time.