Local assumed datum was changed on October 1st, 2022. Prior to change, data were published in elevation in National Geodetic Vertical Datum 1929 (NGVD29).
Important Legacy real-time page
Available data
Select data types to graph from categories based on the way the data were collected.
Learn about the data collection categories Continuous data
3 data types available - data from 2009-03-23 to 2026-08-03
Daily data
1 data types available - data from 2009-03-23 to 2026-08-01
Field measurements
2 data types available - data from 2009-04-07 to 2026-07-30
Discrete sample data
20 Observed properties (data types) available - with data from 2012-03-21 to 2012-10-03
37 Sampling activities
Statistical tables for select daily data types
1 data types available - data from 2009-03-23 to 2026-08-01
Monitoring locations with continuous data in last 120 days
No locations found
