The comprehensive water management Planning Distribution Model, or PDM, was developed by the Biological and Irrigation Engineering Department, Utah State University (USU), under contract with the United States Bureau of Reclamation (USBR). Most of the work was carried out in the Planning Sector, Ministry of Public Works and Water Resources (MPWWR) , in Cairo, under the Planning Studies and Models Component of the USAID funded Irrigation Management Systems Project.
Hill, R.W., Peralta, R.C. and G.P. Merkley. 1993. Review of Planning Distribution Model (PDM) status and application possibilities for the Egyptian irigation system. 46 p.