Comparison of Digital Elevation Models for Determining the Area and Volume of the Water Reservoir

Nowadays, like many other fields, DEM is widely used in the field of hydraulic engineering. In our studies, we compared DEMs (SRTM, ASTER GDEM v2, and ALOS PALSAR) for area recommended construction Shurbulak water reservoir. Contours were developed all with contours a topographic map. The SRTM PALSAR closely match on map than ASTER. Vertical differences between SRTM, GDEM2, products computed root mean squared error (RMSE) to Ground Control Point (GCP) data. RMSE results show that 3.53 m PALSAR, 6.27 4.09 SRTM. longitudinal profiles dams (No. 1 No. 2) data design institute - UzGIP. comparing profile dam digital models correspond by institutes. Viewed as result comparisons (comparison map, RMSE, comparison dam) more accurate DEMs. Therefore, decided use determination reservoir volume. volume determined using model PALSAR.