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
0167891721 01654670 01651800 01654000 0164578734 0204289402 02054550 03524000 0163287828 0204288786 01656903 01638500 03524740 0204288771 01645704 01646000 01646305 01654500 0204306533 0205551614 01646305 01632900 02054750 0164579522 01646500 01645762 01674500 02035000 02041650 0204279294 02079500 01673000 01654107 0204309906 0204289989 0167889257 02042500 0204289131 01668000 0204295063 0204279245 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.