\n“The National Lakes Assessment (NLA) is a statistical survey of the condition of our nation's lakes, ponds, and reservoirs. It is designed to provide information on the extent of lakes that support healthy biological condition and recreation, estimate how widespread major stressors are that impact lake quality, and provide insight into whether lakes nationwide are getting cleaner.” [Quote from \nhttps://www.epa.gov/national-aquatic-resource-surveys/nla\non 2025-12-07.]
\n\n“The [National Lakes Assessment 2022, 2017, 2012, and 2007] data were a result of the collective efforts of dedicated field crews, laboratory staff, data management and quality control staff, analysts and many others from EPA, states, tribes, federal agencies, universities, and other organizations. Please contact nars-hq@epa.gov with any questions.” [Quote from https://www.epa.gov/national-aquatic-resource-surveys/frequent-questions-about-data-national-aquatic-resource-surveys on 2025-12-07.]\n\n","citation:dsDescriptionDate":"2025-12-11"},"subject":"Earth and Environmental Sciences","customCAFEDataLocation:cafeIncludesGeospatialFile":"Yes","citation:productionPlace":"United States of America","citation:distributionDate":"2025-12-12","alternativeTitle":"National Lakes Assessment: US [United States] EPA [Environmental Protection Agency]","language":"English","title":"Extracted Data From: EPA National Lakes Assessment","AdditionalMetadataAboutDataset:cafeDatasetTerms":["Algae","Bacteria","Biodiversity","Cyanobacteria","Ecosystem","Environment","Eutrophication","Freshwater","Water Quality"],"kindOfData":"Extracted Data","citation:subtitle":"National Lakes Assessment (NLA), a part of the National Aquatic Resource Surveys (NARS)","dateOfDeposit":"2025-12-12","citation:notesText":"This submission includes publicly available data extracted in its original form. Please reference the Related Publication listed here for source and citation information.\n\nEPA National Lakes Assessment data was downloaded by Candice Weber on 2025-12-08.","citation:accessToSources":"The below was extracted directly from the EPA Disclaimers page (https://www.epa.gov/web-policies-and-procedures/epa-disclaimers): “Disclaimer of Endorsement Mention of or referral to commercial products or services, and/or links to non-EPA sites does not imply official EPA endorsement of or responsibility for the opinions, ideas, data, or products presented at those locations, or guarantee the validity of the information provided. Mention of commercial products/services on non-EPA websites is provided solely as a pointer to information on topics related to environmental protection that may be useful to EPA staff and the public. Copyright Status The U.S. Government retains a nonexclusive, royalty-free license to publish or reproduce these documents, or allow others to do so, for U.S. Government purposes. These documents may be freely distributed and used for non-commercial, scientific and educational purposes. Commercial use of the documents available from the EPA websites may be protected under the U.S. and Foreign Copyright Laws. Individual documents on the EPA website may have different copyright conditions, and that will be noted in those documents. Disclaimer of Liability With respect to documents available from the EPA website, neither the United States Government nor any of their employees, makes any warranty, express or implied, including the warranties of merchantability and fitness for a particular purpose, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Exit Disclaimer The Exit icon denotes that you are leaving the EPA website and entering an external link or a third-party site. EPA's official web site is www.epa.gov. EPA has provided this link because it provides additional information that may be useful or interesting and is being provided in a manner consistent with the intended purpose of the EPA website. Please note that EPA uses third-party sites to provide EPA content already on www.epa.gov in a different format. EPA cannot attest to the accuracy of non-EPA information provided by these third-party sites or any other linked site. EPA is providing these links for your reference. In doing so, EPA does not endorse any non-government websites, companies or applications. Also, please be aware that the privacy protection provided on the EPA.gov domain (EPA Privacy and Security Notice) does not apply to these third-party sites. To learn more about EPA and social media, please refer to& our social media page. Notice Information from the EPA website resides on numerous computer systems funded by the Agency. The use of the EPA websites may be monitored for computer security purposes. Any unauthorized access to the EPA website is prohibited and is subject to criminal and civil penalties under federal laws including, but not limited to, Public Law 99-474, the Computer Fraud and Abuse Act of 1986. Terms of Use for Geospatial Data These geospatial data and corresponding cartographic materials have been approved for use by the U.S. Environmental Protection Agency (EPA) as advised by the EPA Geospatial Advisory Committee (EGAC). This approved release is on the condition that neither the EPA nor the U.S. Government may be held liable for any damages resulting from its authorized or unauthorized use. These data and any corresponding products, services, or materials do not necessarily represent the EPA’s official position or viewpoint, expressed or implied. These content items are not intended for use in establishing liability or calculating cost recovery statutes of limitations. They cannot be relied upon to create any rights, substantive or procedural, enforceable by any party in litigation with the United States or third parties. Additionally, although these data have been processed successfully on EPA computer systems, no warranty expressed or implied can be made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The Agency reserves the right to revise EPA-stewarded datasets pursuant to further analysis and review without public notice. Unless otherwise specified, geospatial data produced by the EPA is by default in the public domain and is not subject to domestic copyright protection under 17 U.S.C. § 105. Referenced data from non-EPA sources are neither inherently verified nor independently tested by the Agency in all circumstances. Permission to reproduce copyrighted items not produced by the EPA must be secured from the copyright owner. EPA strongly recommends careful attention be paid to metadata files associated with these data to better understand limitations, restrictions or intended use. The U.S. EPA shall not be held liable for improper or incorrect use of the data.\"","customCAFEDataSources:cafeDerivedFromExistingDataset":"Yes","citation:depositor":"Weber, Candice","customCAFEDataLocation:cafeSpatialFileType":"Vector: Polygons","@id":"https://doi.org/10.7910/DVN/OYUVG0","@type":["ore:Aggregation","schema:Dataset"],"schema:version":"1.1","schema:name":"Extracted Data From: EPA National Lakes Assessment","schema:dateModified":"Thu Apr 09 13:15:29 EDT 2026","schema:datePublished":"2025-12-16","schema:creativeWorkStatus":"RELEASED","schema:license":"http://creativecommons.org/licenses/by-nc-sa/4.0","dvcore:fileTermsOfAccess":{"dvcore:fileRequestAccess":false},"schema:includedInDataCatalog":"Harvard Dataverse","schema:isPartOf":{"schema:name":"Extracted Data Contributions","@id":"https://dataverse.harvard.edu/dataverse/cafe-extracted-data","schema:description":"It is important to read all of the information below before depositing data into this collection.
Metadata should be entered using both the Deposit Template guidance, the Metadata requirements documentation, and the information below. \nBefore beginning, ensure all deposits are in the public domain to avoid copyright Infringement
\n\nA Deposit Template has been added by default to guide the process of completing the metadata information for datasets in this collection. Select the ADD DATA and New Dataset option on the right-hand side of this page (not the option at the top of the page) when ready to start depositing data.
\n\nThe purpose of this sub-collection is to store critical climate and health datasets accessible at various locations in one place. Because these datasets are extracted with minimal modification, complete metadata that notes where appropriate citation data can be found is especially important to note.
\n\nAdditional deposit guidance:
\n1) Subsets of a source dataset: If the deposit is a subset of the source data (ie: selecting subset of variables, specific geographic area, etc.), this should be noted in the Title and Description metadata fields. Include any available metadata, and other information available from the source data website.
\n\n2) Metadata About Data Sources field: Include all information that is available. Specific fields to include have been noted in the Deposit Template
\n\n3) Licensing: Licensing determines the possibility of extraction and posting in this sub-collection. Please review any relevant information to ensure data extraction and posting is permitted. By default, this collection includes \"CC0\" as the license. This can be modified per data deposit and before publishing by clicking on the \"TERMS\" tab of a DRAFT dataset.
\n4) Adding additional metadata: After uploading the initial requested information and saving your deposit, click the Edit Dataset option on the dataset page to add any additional metadata.
\n5) Submit for Review : Continue to \"edit\" the DRAFT dataset until you have entered all the available metadata. Once your draft is ready for review, select the \"Submit for Review\" option on your dataset page's top right-hand corner.\n\n
\nHappy Datathon!","schema:isPartOf":{"schema:name":"CAFE Research Coordinating Center for Health and Extreme Weather Collection","@id":"https://dataverse.harvard.edu/dataverse/CAFE","schema:description":"Welcome to the CAFE Dataverse collection! This open collection is designed to support and enhance global research initiatives focused on understanding and mitigating the health impacts of environmental exposures. More information about CAFE's data management can be found on our CAFE documentation website. To learn more about CAFE, please visit our homepage.
\n\nInstructions
\nTo make contributions to the CAFE collection, you'll find easy-to-follow steps in our CAFE Dataverse upload instructions. Before publishing your dataset, please ensure the metadata adheres to the CAFE Recommended README Template, and familiarize yourself with the Dataverse Terms of Use.
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