Mto Ngadda ni mto unaopatikana nchini na Nigeria na kuishia katika ziwa Chad. Orodha ya mito ya Nigeria Mito mirefu ya Afrika Thambyapillay, G. G. R. (1993-05-13). "Drought chronology dating in the lake Chad basin (Nigeria command)". Colloques et séminaires - Institut français de recherche scientifique pour le développement en coopération (Paris: ORSTOM Soil Research Centre): 31–61. Majiranukta kwenye ramani: 12°40′N 13°50′E﻿ / ﻿12.667°N 13.833°E﻿ / 12.667; 13.833