EPA Long-Term Monitoring of Acidified Surface Waters
This dataset compiled surface water chemistry data from 1980 to 2024. Data were 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 Data.gov's References section.
Complete Metadata
| accessLevel | public |
|---|---|
| bureauCode |
[
"020:00"
]
|
| contactPoint |
{
"fn": "Scott Riley",
"hasEmail": "mailto:riley.scottm@epa.gov"
}
|
| describedBy | https://pasteur.epa.gov/uploads/10.23719/1518546/documents/Data_Dictionary_2025_9_23.xlsx |
| describedByType | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
| description | This dataset compiled surface water chemistry data from 1980 to 2024. Data were 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 Data.gov's References section. |
| distribution |
[
{
"title": "Data_Dictionary_2025_9_23.xlsx",
"mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1518546/Data_Dictionary_2025_9_23.xlsx"
},
{
"title": "LTM_Data_2025_9_23.xlsx",
"mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1518546/LTM_Data_2025_9_23.xlsx"
},
{
"title": "Methods_2025_9_23.xlsx",
"mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1518546/Methods_2025_9_23.xlsx"
},
{
"title": "Site_Information_2025_9_23.xlsx",
"mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
"downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1518546/Site_Information_2025_9_23.xlsx"
}
]
|
| identifier | https://doi.org/10.23719/1518546 |
| keyword |
[
"Clean Air Act",
"Stream Monitoring",
"acid deposition",
"acid rain",
"acid-base balance",
"lake monitoring",
"nitrate",
"sulfate",
"water chemistry"
]
|
| license | https://pasteur.epa.gov/license/sciencehub-license.html |
| modified | 2025-10-01 |
| programCode |
[
"020:000"
]
|
| publisher |
{
"name": "U.S. Environmental Protection Agency",
"subOrganizationOf": {
"name": "U.S. Government"
}
}
|
| references |
null
|
| rights |
null
|
| spatial | -83.8225,36.4646,-66.5649,47.4872 |
| title | EPA Long-Term Monitoring of Acidified Surface Waters |
