How to calculate the volume of reservoir of Dam using ArcGIS

How to calculate the volume of Dam reservoir using ArcGIS Create TIN, DEM and Slope from Contour Line by ArcGIS. Link video How to Clip DEM by ArcGIS. Link video How to extract Google Maps Annotation to ArcGIS. Link video Delete cells of Raster in ArcGIS Link video How to migrate Data from Feature into another in ArcGIS. Link video