National Lakes Assessment Data

Metadata Updated: March 3, 2017

The National Lakes Assessment (NLA) is a first-ever statistically-valid survey of the biological condition of lakes and reservoirs throughout the U.S. The U.S. Environmental Protection Agency (EPA) worked with states and tribes to conduct the assessment in 2007. Data for each parameter sampled in the National Lakes Assessment (NLA) are available for downloading in a series of files as comma separated values (.csv). Each .csv data file has a companion text file (.txt) that lists a dataset label and individual descriptions for each variable. Users should view the .txt files first to help guide their understanding and use of the data.

Access & Use Information

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

Downloads & Resources

No file downloads have been provided. The publisher may provide downloads in the future or they may be available from their other links.



Metadata Created Date August 17, 2016
Metadata Updated Date March 3, 2017
Data Update Frequency irregular

Metadata Source

Harvested from OW Non-Geo Records

Additional Metadata

Resource Type Dataset
Metadata Created Date August 17, 2016
Metadata Updated Date March 3, 2017
Publisher U.S. EPA Office of Water (OW) - Office of Wetlands Oceans and Watersheds (OWOW)
Unique Identifier {668F7BE3-50D1-465C-A73D-B21625689159}
Public Access Level public
Data Update Frequency irregular
Bureau Code 020:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id 70339ed4-43de-45eb-84a5-fe2c26f469e4
Harvest Source Id a98fc2af-60c8-44d1-b251-8702b674dd1a
Harvest Source Title OW Non-Geo Records
Data First Published 2014-01-01
Data Last Modified 2010-08-13
Program Code 020:072
Related Documents,
Source Datajson Identifier True
Source Hash b6075dae6251bcd1b32fa8360c656f1b7d4b3575
Source Schema Version 1.1
Spatial -180.0,18.0,-66.0,72.0

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