Postconstruction tin of land surface on the Missouri River downstream from Gavins Point Dam near River Mile 761.4

This geospatial data set contains an interpolated 3-D surface or, triangulated-irregular network (TIN), of the substrate surface between cross-sections 23 and 39 following construction of Emergent Sandbar Habitat near River Mile 761.4. The surface was generated from points collected by the echosounder and real-time kinematic (RTK) GPS on cross-sections in the downstream project reach surrounding the construction area at River Mile 761.4 below Gavins Point Dam on the Missouri River in South Dakota.

本地理空间数据集（geospatial data set）包含河道里程761.4附近的新生沙洲栖息地（Emergent Sandbar Habitat）施工完成后，23号至39号断面之间河床底质表面的插值三维曲面或不规则三角网（triangulated-irregular network, TIN）。该曲面由南达科他州密苏里河加文斯波因特大坝（Gavins Point Dam）下游河道里程761.4处施工区域周边的项目下游河段内，通过回声测深仪（echosounder）与实时动态（real-time kinematic, RTK）全球定位系统在各断面上采集的测点生成。