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 Specific Conductance, in µS/cm

Map of , showing which states provide real-time computed water-quality data
03125338 03098600 395339083130100 03127986 04183500 03220510 03126395 03145483 03127980 03140900 411402080492400 03120820 03140853 03127989 03140950 03216070 03120961 03120869 03119979 03119971 03228300 412122083061400 03219500 03099500 04193500 03119341 03228039 03230427 04188496 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.