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
11176900 11511990 10260500 09429490 11510700 11451800 10261500 11467000 11044000 11273400 11204100 11203580 11463980 11461500 11462500 380631122032201 11455485 11455142 11447650 11455095 390029122410601 11455385 381142122015801 11336790 11465240 11337190 11455140 11455315 11312676 10260950 11455508 11455338 11447890 11455276 11452500 11455340 11463682 11455136 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.