What is the gold content of doctor of water conservancy in Hohai University? Hohai University Doctor of Water Conservancy has a high gold content. Hohai University 2 1 1 University, doctor of water conservancy is the highest degree, so doctor of water conservancy in Hohai University has a high gold content. Hohai University is a national key university jointly established by the Ministry of Education, the Ministry of Water Resources, the State Oceanic Administration and the Jiangsu Provincial Government. It is a national first-class discipline construction university and a national key construction university of 2 1 1 engineering.