Ikoreshwa mu gupima, gusuzuma no gupima imikorere y’imyenda mu mazi y’amazi. Ishingiye ku kumenya uburyo amazi adashobora kugwa, uburyo amazi yirinda kugwa ndetse n’uburyo amazi yinjira mu myenda, harimo imiterere n’imiterere y’imbere y’imyenda ndetse n’imiterere y’ingenzi y’imigozi n’ubudodo by’imyenda.