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
11509500 14207200 453030122560101 14203500 14186700 420448121503100 14187500 14187200 142063398 14202650 14206752 14151000 442453122394900 14206950 11501000 14206241 14186200 14152000 14162200 14163000 14210000 14179000 14159500 14202980 14185900 14162440 14144700 14162500 14164550 452230122512201 14150000 453040123065201 14211550 14211720 14163900 14317450 14185000 14181500 452731123092100 14113000 14183020 11510700 14078260 14123500 14158100 14211010 14182500 14149011 11502500 14158850 14178000 14209710 14139800 14211400 14316460 14246900 432004118453400 430506118505600 425818118520500 431605118510600 431258118523900 424833118521200 444306122144600 14162450 430242118502100 453004122510301 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.