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