I have a raster (DEM) and want to replace a few cell's values with the values from another raster in QGIS. I would have done this with the "over" tool in the raster calculator in ArcGIS.
Specifics: To potentially restore a mire, I want to model how the water flows if dams were to be put into place across some ditches. So, I have the original DEM and would like to add the dams to it (to then do an flow accumulation analysis). I cannot just add a few meters to the cell's values, because the dams are supposed to go across the ditches (so 90 degrees to the ditches) ... so, a constant would not result in an even dam, but a v-shaped one.
Is somebody able to help?