Lakes

All Lakes have an Inactive zone (Dead storage). If the Level-area-volume (LAV) table includes levels above Dead zone level and a Spill capacity table defined, Lakes also have an Inundation zone. In the Inundation zone excess water may be stored. The highest level defined in the LAV table thus repre­sents the ‘Dam crest level’ for Lakes. If no Spill capacity table is given and the water level is at Dead zone level (top of dead storage), all inflow that is not allocated to Water users will flow out from the Lake immediately.

Figure 9.2           Zones in a Lake