Kuwait's Burgan field has a total capacity of approximately  of proven oil reserves. During the 1991 Kuwaiti oil fires, more than 500 oil lakes were created covering a combined surface area of about . The resulting soil contamination due to oil and soot accumulation had made eastern and south-eastern parts of Kuwait uninhabitable. Sand and oil residue had reduced large parts of the Kuwaiti desert to semi-asphalt surfaces. The oil spills during the Gulf War also drastically affected Kuwait's marine resources.