Revision History for U.S. Geological Survey Techniques and Methods 9-A10

Lakes and Reservoirs: Guidelines for Study Design and Sampling

By U.S. Geological Survey

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Posted online September 29, 2015

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Revised and reposted May 31, 2018

The following paragraph was added to the abstract and to the introduction:
Before 2017, the U.S. Geological Survey (USGS) "National Field Manual for the Collection of Water-Quality Data" (NFM) chapters were released in the 
USGS Techniques of Water-Resources Investigations series. Effective in 2018, new and revised NFM chapters are being released in the 
USGS Techniques and Methods series; this series change does not affect the content and format of the NFM. More information is in the general introduction 
to the NFM (USGS Techniques and Methods, book 9, chapter A0, 2018) at https://doi.org/10.3133/tm9A0. The authoritative current versions of NFM chapters 
are available in the USGS Publications Warehouse at https://pubs.er.usgs.gov. Comments, questions, and suggestions related to the NFM can be addressed to 
nfm-owq@usgs.gov.

This report was originally published as USGS Techniques of Water-Resources Investigations (TWRI) 9-A10 and authored by W. Reed Green, Dale M. Robertson, 
and Franceska D. Wilde. The authorship changed to "U.S. Geological Survey" and the report has been updated to be in the USGS Techniques and Methods (T&M) series, 
and it is still designated as book 9, chapter A10. It was revised to match the current style and format of a USGS series report, particularly dual-column format 
and the reformatting of some of the tables. A back cover was added, and the front cover, title page, and back-of-title page were revised to include the following: 
the change of series (to a T&M), the change in authorship, and a statement that the first release of chapter A10 in the T&M series supersedes TWRI book 9, 
chapter A10, version 1.0.

Minor editorial text changes were made in the report. These are not data changes; they enhance the readability of the report.