Explore the NEWUSGS National Water Dashboard interactive map to access real-time water data from over 13,500 stations nationwide.
Water Quality Samples for the Nation
Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data
starting March 11, 2024
with a full decommission expected 6 months later.
Learn more about the upcoming change and where to find the new samples
data in our blog.
USGS 422615071203105 WALDEN POND TRANSECT 5E AT CONCORD, MA