Title: Water-quality trends in the Santa Ana River at MWD Crossing and below Prado Dam, Riverside County, California
Subjects: Groundwater, Water quality, Pollution, Environmental aspects of Hazardous wastes, Environmental aspects of Sewage, Hazardous wastes, Refuse and refuse disposal, Environmental aspects of Refuse and refuse disposal, Sewage, Environmental aspects of Waste disposal, Waste disposal
Places: California, Santa Ana River, Riverside County