Tha Kradan (ท่ากระดาน) is a subdistrict of Khiri Rat Nikhom in Surat Thani. Institutional research identifies Khlong Yan as the waterway passing through the tambon, distinct from the Phum Duang route across other parts of the district.
Current community-development reports locate Ban Ko Yuan in Village 1 and Ban Hat Pho in Village 4, with village halls serving as community meeting places. These are useful local reference names across the administrative area. Tha Kradan here belongs to Khiri Rat Nikhom, distinguishing it from similarly named tambons in other provinces.
