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 Dissolved Oxygen, in mg/L

Map of , showing which states provide real-time computed water-quality data
08065350 08437710 08067000 08412500 08052745 08377200 08449000 295554095093402 08447410 08447300 08052700 08447000 08446500 08188060 08188500 08070200 300032095080501 294643095035200 08374200 07332605 08068000 08374510 08375300 07332622 08211200 08066850 08062500 08180800 08069500 08181800 08181500 08057000 08048000 295826095082200 08057410 08105891 08155500 08068500 08047050 08049500 08371500 08041770 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.