Lake Shoreline in the Contiguous United States

There are millions of lakes, ponds and reservoirs in the United States. Existing datasets are large and unweildy. With this data product, derived from the US NHD (downloaded Jan 2013), we summarize at a high level the distribution of lakes across the US.美国境内分布着数百万个湖泊、池塘与水库。现有相关数据集普遍体量庞大且难以高效处理。本数据产品源自2013年1月下载的美国国家水文数据集（US NHD），我们借此从宏观层面概要总结了美国境内湖泊的整体分布情况。