Environmental Systems Research

Table 13 The water balance of Arata's catchment (‘000 m³)

From: Impacts of small-scale irrigation water use on environmental flow of ungauged rivers in Africa

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Sum
Flow	989	1149	1820	2674	3408	2906	9125	27099	17485	7229	1987	1096	76966
Demand	1045	1210	861	946	531	183	0	0	348	348	597	861	6931
Balance	−56	−61	959	1728	2877	2723	9126	27099	17137	6881	1390	235	70036
Tennant ENF (%)	290	290	290	290	290	290	290	290	290	290	290	290
Q95	310	310	310	310	310	310	310	310	310	310	310	310
LTR **	60	60	60	60	60	60	60	60	60	60	60	60

^*E.N.F. Environmental flow
^**LTR Local thumb rule 15% of January (the driest month of the year)

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