Introducing of Ce-Qual-W2 Model and Its Application - Water Quality Management: Assessment and Interpretation - page 112

Fig. 6.16 DO variations in K ā r ū in River during low low periods (mg/l)

Table 6.3 General criteria for water quality in Iran; Iran ' s Department of Environment (DOE)

( 2003 )
DO (mg/l) BOD 5 (mg/l)

5 5

Fig. 6.17 BOD variations in K ā r ū in River during low low periods (mg/l)

drought periods. Therefore, a designed flow must be maintained during the con-

struction of the Gotvand Dam and after Operation for the keeping the eco-system
safe for aquatic lives. Based on the results of this study as indicated in the Figs. 6.16
and 6.17 ,a flow of 90 m 3 /s must be maintained in the river. This design ow may be

predicted higher if the effects of pollutants sources in the entire K in region in the

downstream of the Gotvand Dam are considered (Khodadadi Darban 2010 ).

ā r ū