Keywords: Flood&recession.JPG Hydrographs of the flood level of the Boro river with an indication of the years in which the timely closure of the sluice gates would facilitate flood-recession cropping in the molapo ™s in the Okavango delta Botswana en wikipedia 2009-11-23 R J Oosterbaan wikipedia en R J Oosterbaan original upload log page en wikipedia Flood 26recession JPG 2009-11-23 09 08 R J Oosterbaan 541×288× 35964 bytes <nowiki>Hydrographs in the molapo's of the Okavango delta Botswana self made PD-self</nowiki> Irrigation Water management Hydrological diagrams Land management |