Digital surface model of the watercourses Elbe and Lower Havel (Germany), DGM-W Elbe project, DOM Elbe 2022

The high-resolution digital surface model (DSM1, DOM1) of the watercourses Elbe and Lower Havel is based on the airborne laser scanning data, undertaken from 06 January 2022 to 18 March 2022 in the Elbe area and from 20 to 22 December 2021 in the Havel area. It was produced and published by Germany’s Federal Institute of Hydrology (BfG), on behalf of the River Basin Community Elbe (RBC Elbe, FGG Elbe). The work was supported by the German Federal Waterways and Shipping Administration (WSV) and the surveying offices and water management administrations of six German states - Saxony, Saxony-Anhalt, Brandenburg, Lower Saxony, Mecklenburg-Vorpommern and Schleswig-Holstein. Recent homogeneous geotopographic data of the Elbe watercourse and its historical floodplain are required for a number of applications in the fields of water management, hydraulic engineering and ecology. The data cover both the area around the inland water stretches of the Elbe from the Czech-German border to the village of Zollenspieker (part of the city of Hamburg) and the Lower Havel waterway from the town of Rathenow to its confluence with the Elbe. Since the dataset has a large coverage of 4,043 km², it is split into 62 sections. They were either labelled *HW in case of flood relevant areas (in German: “hochwasser-relevante Gebiete”) or *AU in case of historical floodplains (in German: “Altauengebiete”). Financing was divided according to these categories: In the HW areas, the project was co-funded by BfG, the WSV and the federal states, while in the AU areas, BfG covered all project costs. For each section we provide hillshade (*HS) and height maps (*NHN). The data are available as GeoTIFF-files (resolution 1 meter); Coordinate reference frame: ETRS89.DREF91.R16; Coordinate projection: UTM Zone 33N; EPSG-Code: 25833; Height reference system: DHHN2016, national vertical reference frame in Germany (2022). As of now, only the southern part of the data is available (Elbe-km 0-411 km; Czech-German border to the confluence of Elbe and Lower Havel). The northern part (Elbe-km 411-600 and Lower Havel) will be added as soon as possible. For further information please contact us.易北河（Elbe）与下哈弗尔河（Lower Havel）水道的高分辨率数字地表模型（digital surface model, DSM1）与数字正射影像图（digital orthophoto model, DOM1），基于机载激光扫描数据制作。数据采集时间为：易北河区域2022年1月6日至3月18日，哈弗尔河区域2021年12月20日至22日。 该数据集由德国联邦水文研究所（Federal Institute of Hydrology, BfG）代表易北河流域共同体（River Basin Community Elbe, RBC Elbe，FGG Elbe）制作并发布，得到了德国联邦水路与航运管理局（German Federal Waterways and Shipping Administration, WSV）以及萨克森州、萨克森-安哈尔特州、勃兰登堡州、下萨克森州、梅克伦堡-前波美拉尼亚州、石勒苏益格-荷尔斯泰因州六个德国联邦州的测绘部门与水管理部门的支持。水管理、水利工程与生态领域的多项应用，均亟需易北河水道及其历史洪泛区的高精度均匀地貌地形数据。 本次数据覆盖范围涵盖易北河内陆河段（从捷德边境至措伦施皮克尔村，即汉堡市下辖区域），以及下哈弗尔河航道（从拉特诺镇至其与易北河的汇流处）。由于数据集覆盖面积达4043平方千米，被划分为62个分区：其中与洪水相关的区域标注为*HW（德语原文：hochwasser-relevante Gebiete），历史洪泛区标注为*AU（德语原文：Altauengebiete）。项目经费按类别分配：在HW区域，项目经费由BfG、WSV及各联邦州共同资助；在AU区域，全部项目成本均由BfG承担。 每个分区均提供晕渲图（*HS）与高程图（*NHN）。数据以GeoTIFF格式发布，分辨率为1米；坐标系采用ETRS89.DREF91.R16；投影为UTM 33N带；EPSG代码为25833；高程基准为德国国家垂直基准面DHHN2016（2022版）。 截至目前，仅数据集的南部区域可用，即易北河里程0-411公里段（从捷德边境至易北河与下哈弗尔河汇流处）。北部区域（易北河里程411-600公里段及下哈弗尔河区域）将尽快上线发布。 如需进一步信息，请联系我方。