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. 2015 Jul 1;4:28. doi: 10.1186/s13742-015-0067-4

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© Soranno et al. 2015

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — The study extent of LAGOS, showing location of all lakes ≥ 4 ha (blue polygons). The study extent included 17 states in the upper Midwest and Northeastern parts of the US. Note that there are many lakes that straddle the state boundaries but are still included in the database because the source data for the lakes are based on natural watershed boundaries rather that state boundaries