Bathymetric data for Clearwater Lake near Piedmont, Missouri, 2017

Clearwater Lake, on the Black River near Piedmont in Reynolds County, Missouri, was constructed in 1948 and is operated by the U.S. Army Corps of Engineers for flood-risk reduction, recreation, and fish and wildlife habitat. The lake area is about 1,800 acres with about 34 miles of shoreline at the conservation pool elevation of 498 feet. Periodically, many lakes operated by the U.S. Army Corps of Engineers have bathymetric and sediment surveys to monitor the status of the lake. In May 2017, the U.S. Geological Survey, in cooperation with the U.S. Army Corps of Engineers, surveyed the bathymetry of Clearwater Lake to prepare an updated bathymetric map and surface area and capacity table. A previous survey completed in 2008 was contrasted with the 2017 survey to document the changes in the bathymetric surface of the lake. Data sets included are the bathymetric data points collected during the 2017 bathymetric survey. There are two data sets included: the multibeam data (averaged to 3.28 feet) that was used as the source of points to create the bathymetric surface and the raw multibeam data from 4 selected resurvey areas that was used as quality assurance data to test the accuracy of the 3.28-feet spacing data points. Richards, J.M., and Huizinga, R.J., 2018, Bathymetric contour map, surface area and capacity table, and bathymetric difference map for Clearwater Lake near Piedmont, Missouri, 2017: U.S. Geological Survey Scientific Investigations Map 3409, 1 sheet, https://doi.org/10.3133/sim3409.

位于密苏里州雷诺兹县派德蒙特附近黑河上的克利尔沃特湖（Clearwater Lake）于1948年建成，由美国陆军工程兵团（U.S. Army Corps of Engineers）管理，其功能涵盖防洪减灾、休闲娱乐以及鱼类与野生动物栖息地保护。该湖泊在养护水位498英尺时，水域面积约1800英亩，岸线总长约34英里。由美国陆军工程兵团管理的多数湖泊会定期开展水深测量与沉积物调查，以监测湖泊运行状态。2017年5月，美国地质调查局（U.S. Geological Survey）与美国陆军工程兵团合作，对克利尔沃特湖开展水深测量，旨在编制最新的水深图、水域面积与库容表。研究团队将2008年完成的历史勘测数据与2017年的勘测结果进行对比，以记录该湖水深地形的变化情况。本次公开的数据集包含2017年水深测量过程中采集的水深数据点，具体分为两类：一是经平均化处理至3.28英尺间距的多波束数据，该数据作为构建水深地形表面的数据源；二是来自4个选定复测区域的原始多波束数据，用作质量保障数据，以检验3.28英尺间距数据点的精度。相关成果由Richards JM与Huizinga RJ于2018年发布，题为《2017年密苏里州派德蒙特附近克利尔沃特湖水深等值线图、水域面积与库容表及水深差异图》，载于美国地质调查局科学调查图3409号，共1幅，DOI：10.3133/sim3409。