Rural Water Supply – Designing intakes for Ponds, Lakes and Reservoirs WFTW (1982a): Rural Water Supply – Designing intakes for Ponds, Lakes and Reservoirs. Technical Note No. RWS. 1.D.2. Washington D.C. (USA): Water for the World (WFTW), U.S. Agency for International Development. URL [Accessed: 01.10.2018] PDF