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EPA Long-Term Monitoring of Acidified Surface Waters

Metadata Updated: August 14, 2022

This dataset compiles surface water chemistry data from 1980 to 2020 and will be updated annually with an approximate lag time of one year. Data are collected in four regions in the eastern United States (Virginia streams, New York lakes and streams, Maine and New Hampshire lakes, and Vermont lakes). These data are used to calculate trends in surface water chemistry to assess aquatic ecosystem response to changes in sulfur and nitrogen deposition. Water chemistry in this data can be influenced by the ambient flow conditions. To be included in the dataset, sites needed to have regular sampling (at least once per year for 20 years). Citation information for this dataset can be found in the EDG's Metadata Reference Information section and's References section.

Access & Use Information

Public: This dataset is intended for public access and use. License: See this page for license information.

Downloads & Resources


Metadata Created Date November 12, 2020
Metadata Updated Date August 14, 2022

Metadata Source

Harvested from EPA ScienceHub

Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date August 14, 2022
Publisher U.S. Environmental Protection Agency
Data Last Modified 2020-04-22
Public Access Level public
Bureau Code 020:00
Schema Version
Data Dictionary
Data Dictionary Type application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Harvest Object Id 3d326c2a-fcd3-4151-9fc8-3482e9288cd2
Harvest Source Id 04b59eaf-ae53-4066-93db-80f2ed0df446
Harvest Source Title EPA ScienceHub
Program Code 020:000
Publisher Hierarchy U.S. Government > U.S. Environmental Protection Agency
Source Datajson Identifier True
Source Hash 39e99808918377caacc62e6da3eb68cb9ce04565
Source Schema Version 1.1

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