Bathymetry, Stage-Area, and Stage-Volume Tables for the Calaveras Reservoir, California, 2019 (ver. 2.0, March 2025)

Dataset contains reservoir bathymetry and shoreline topography up to dam crest elevation. Data were collected using small uncrewed aerial system (sUAS), multibeam sonar, and terrestrial lidar.

Version 2.0
The multibeam sonar & terrestrial lidar data in version 2 was reprocessed for higher accuracy. 1-meter lidar data for 2020 from the USGS 3DEP program was used around the shoreline of the reservoir. Additionally the final Digital Elevation Model (DEM) was created using the ArcGIS Pro Topo to Raster tool which creates a hydrologically correct surface, where as the initial version of the DEM was created using the ArcGIS Pro Inverse Distance Weighted (IDW) tool.

Changes from previous version:
1) Final Bathymetric DEM created using Topo to Raster instead of IDW.
2) Reprocessed multibeam sonar and terrestrial lidar.
3) 1-meter lidar data for 2020 was used around shoreline (previous version used 2019 10m DEM from the USGS National Elevation Dataset)
4) Revised contours and stage-area and stage-volume tables were created from the updated DEM

本数据集包含水库水深地形与岸线地形数据，覆盖范围至坝顶高程。数据采集采用小型无人航空系统（small uncrewed aerial system, sUAS）、多波束声呐（multibeam sonar）及地面激光雷达（terrestrial lidar）。

版本2.0
版本2.0中的多波束声呐与地面激光雷达数据已完成重新处理以提升精度。水库岸线周边采用了美国地质调查局3DEP计划（USGS 3DEP program）2020年发布的1米分辨率激光雷达数据。此外，本次最终数字高程模型（Digital Elevation Model, DEM）通过ArcGIS Pro的「地形转栅格（Topo to Raster）」工具生成，该工具可创建符合水文特征的地表模型；而初始版本的DEM则是通过ArcGIS Pro的反距离权重（Inverse Distance Weighted, IDW）工具生成的。

相较于旧版本的更新内容：
1) 最终水深数字高程模型采用「地形转栅格」工具生成，替代原有的反距离权重法；
2) 重新处理了多波束声呐与地面激光雷达数据；
3) 水库岸线周边采用2020年1米分辨率激光雷达数据（旧版本使用美国地质调查局国家高程数据集（USGS National Elevation Dataset）2019年发布的10米分辨率DEM）；
4) 基于更新后的DEM生成了修订后的等高线及水位-面积、水位-库容表。