Lower reaches of the Heihe River
middle reaches of the Heihe River
the Heihe River catchment
The lower reaches of the Heihe River
The middle reaches of the Heihe River
water diversion of the Heihe River
the lower reaches of Heihe River
the middle and lower Heihe River basin
The middle reach of Heihe River basin
The middle reaches of Heihe river
the middle reaches of Heihe River Basin
The middle-lower reaches of Heihe river
the upstream Heihe river
A long the river cotton region
a regulated discharge regime of the river