1 23 Environmental Earth Sciences ISSN 1866-6280 Volume 65 Number 1 Environ Earth Sci (2012) 65:103-117 DOI 10.1007/s12665-011-1069-x Water leakage paths in the Doosti Dam, Turkmenistan and Iran Morteza Mozafari, Ezzatollah Raeisi & Mohammad Zare