:Well the volume is calculated from area and average depth. The information that it is on Eil Malk island is from de-WP. Eil Mail is also called Mecherchar. In Wikimapia it can be verified that the lake is located on that island. Here is also a detailed map of the island, unfortunately without the name of the lake indicated. I am planning to add the name to the map (it's public domain) and upload it to commons.