Overall acacia seedlings were located in wadis including from south
Fig. 1. Map of the study region, with cumulative GF109203X isohyets for the 2012–2013 rainy season, and with circumference of the relevant basins. Rainfall data obtained from the Central Arava R&D website. Red dots represent the study\'s plots. Yellow dots represent rain gauges.Figure optionsDownload full-size imageDownload as PowerPoint slide
Compared with the long-term inter-annual means, the cumulative precipitation rates during the studied rainy season (2012–2013) were 165% (30 mm) and 436% (44 mm) greater in the northern and southern Arava Valley, respectively (Central Arava R&D website). Table 1 shows the temporal distribution of rain events during mosaic evolution season for selected locations throughout the study region. Flood gauges, which have been sparsely installed in the beginning of the 1980s throughout the study region, provided data regarding flood water volume during the 2012–2013 rainy season for some of the wadis (Table 2). For the first half of the following rainy season (October through December 2013), no considerable rainfall event or flood occurred in any of the studied wadis. The only exception to this was a storm that occurred on December 30–31, 2013, resulting in a low-magnitude flood in the Hayun Wadi.