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