Both private and public-sector entities are involved in the development, deployment, use, and consumption of hydrological/hydro-meteorological products and services provided via decision-support systems (DSS's). Such DSS's span a wide variety of water resources applications including impoundments, reservoir/hydro-power, regional water supply management, drought response strategies, irrigation/agriculture, urban runoff/drainage, potable water, and water pollution mitigation. They also include heavy precipitation and flash-flood/river-flooding awareness and forecast services. DSS's range in complexity from highly-sophisticated to consumer-oriented and include products for emergency management, broadcast television and smart-phone application developers (e.g. Web data services/API's), while also covering a broad range of both space and time scales. On the other hand, consumers of such products and services desire to minimize impacts -- often within very specialized niche exposure to hydro-meterologically generated threats -- while looking to both commercial and government suppliers to generate the needed information. We invite contributions that document working decision support systems with specific case study analyses across this wide spectrum of applications consistent with the overall meeting theme of earth-system-science in service to society. Please contact John McHenry (email@example.com) for additional information.