Ratchaprapha Dam or Chieo Lan Dam, built in 1982, is a rock with fat-clay core dam that is 94 meters in height and 761 in length. The reservoir (lake) covers an area of 185 square kilometers and boasts an electricity generating capacity of approximately 554 million kilowatt / hour. The lake offers an incomparably breathtaking view of limestone mountains and over 200 small islands.
Accommodations near the dam are available from the Electricity Generating Authority of Thailand, Tel. 02 436-3179 or 77 311-364, 311-522. For those wishing to see the lake closer, boat rental service is also available. Contact 077 311522, or 02 2407405 ext. 5008 for more details. The dam is located 70 kilometers west from Surat Thani on Highway No. 401. Travel along the Highway, turn right at the kilometer 52-53 marker and proceed for another 12 kilometers along an access road until you see the extensive lake beyond the Dam.