G'day Santfebuff,
...it is unlikely, Joshua, given that your data is sourced from Google Earth and the USGS that it is 'wrong'. It sounds to me, without being able to see any of your images (they failed to show up in the post), that you have downloaded the DEM data Tile for the wrong Topographical area you are 'using'. This is a common error made by newcomers to this 'activity'. If you did not use the "File name info SRTM,hgt" option from the File/DEM menu to check which SRTM Tile to obtain (but, instead, guessed it from the geographical line data shown in your TransDEM window), then you will have definitely made a mistake. Because the SRTM DEM Tiles are named by the coordinates of their South West Corner and start at "1N" (or "1S", if you are in the Southern Hemisphere) and the Equator is "0 degrees" latitude, you MUST add the value "1" to the geographical display shown in the TransDEM window (the aforementioned 'option' automatically does this for you in it's "output"). So, if, for example, the coordinate lines for North 25 degrees and west 70 degrees appear in your TransDEM window, then you must needs download the DEM tile for N26W70, in order to get the correct tile for that area...
...if you have done this (and are sure the DEM Tile is the correct one), then we will need to see your images to proffer any other possible causes of your problem...
Jerker {:)}
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