አ በ1997 የፀደቀው የተባበሩት መንግስታት ኮንቬንሽን የተፋሰሱ ሀገሮች ድንበር ተሻጋሪ ወንዞችን በድንበሮቻቸው ክልል አግባብ ባለውና ፍትሐዊ በሆነ መንገድ / In a reasonable and equitable manner / እንዲጠቀሙ ያስገድዳል።
The United Nations (UN) Convention on the Law on the Non-navigational Uses of International Watercourses of 1997 obliges the member states to utilise watercourses in an equitable and reasonable manner in their respective territories (Art. 5 para.