* indicates measured value below analysis detection limit listed below:
Lower Detection Limit
Preliminary Data - subject to revision
Select on the parameter name to view more detailed information for that parameter in this month.
Select on the site name to view data time series observed at that station.
For monitoring site locations see site location map.
BASIN is a community project actively seeking public participation. We
appreciate all feedback and welcome comments, suggestions and contributions.
To find out more about how you can be involved,