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

USGS is updating how statistical information is delivered. WaterWatch and WaterQualityWatch will be retired around February 24, 2026. Explore alternative tools and share feedback at wdfn@usgs.gov.

Real-Time Turbidity, in NTU or FNU

Map of , showing which states provide real-time computed water-quality data
08211200 08065350 300032095080501 08067000 08057410 08070200 294643095035200 08164504 295554095093402 08062500 08188500 08066850 08069500 08068000 08181800 295826095082200 08057000 08048000 08188060 08170990 08180800 08155500 08181500 08047050 08105891 08041770 08049500 08068500 Explanation

* 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.