WaterQualityWatch -- Continuous Real-Time Water Quality of Surface Water in the United States

Real-Time pH, field, in standard units

Map of , showing which states provide real-time computed water-quality data
11273400 11176900 09429490 11461500 11455136 11455095 11455315 11455485 11455140 11455338 11455142 10260500 11313405 11455508 10261500 11511990 380924121301901 11044000 11455276 11203580 380548121390501 11312676 11447890 11204100 11463980 11336790 11462500 11455385 11510700 11467000 11337190 11463682 381142122015801 11447650 341049118295201 380631122032201 11465240 380711121323401 11092450 10260950 341015118284001 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.