Seegräben has an area of . Of this area, 49.9% is used for agricultural purposes, while 15.4% is forested. Of the rest of the land, 15.6% is settled (buildings or roads) and the remainder (19.1%) is non-productive (rivers, glaciers or mountains). housing and buildings made up 10.4% of the total area, while transportation infrastructure made up the rest (5.3%). Of the total unproductive area, water (streams and lakes) made up 10.4% of the area. 12.7% of the total municipal area was undergoing some type of construction.