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
391953108130201 09152500 07126485 09149500 09136100 09163500 07126300 09085000 09144250 09071750 09085160 393259107194801 09095500 09070500 09058000 09037500 09020500 09034250 09040500 09060799 09163492 09114500 06729470 09359020 06707525 09010500 09361500 09027100 09014050 381312104321001 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.