WaterQualityWatch -- Continuous Real-Time Water Quality of Surface Water in the United States

Real-Time Discharge, in cfs

Map of , showing which states provide real-time computed water-quality data
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* Site operated on a seasonal basis or currently is not operating.
No values are available for the last 6 hours.

The "Real-time" map tracks short-term changes (over several hours) of water quality. Although the general appearance of the map changes very little from one hour to the next, individual sites may change rapidly in response to major rain events or to reservoir releases. The data used to produce this map are provisional.