Kogin Ouémé
Kogin Ouémé, wanda aka fi sani da kogin Weme, kogi ne a ƙasar Benin. Yana hawa ne a tsaunukan Atakora, kuma tsawon shi ya kai kimanin kilomita 510. Yana ratsa garuruwan Carnotville da Ouémé zuwa wani babban haddi a mashigin tekun Guinea kusa da tashar jirgin ruwan Cotonou. Manyan koguna sune Kogin Okpara da kuma kogin Alpouro. Kogin Ouémé shi ne mafi girma a Kogin Jamhuriyar Benin. Tana tsakanin 6° 30° da 10° arewa latitude da 0° 52 'da 3° 05' longitude gabas (Oba S. Alain 2018). Yana ƙetare yankuna da dama na amfanin gona da abinci a can, tsarin lagoon ''Lake Nokoué-lagoon na Porto-Novo'' ta yankin Delta. Kananan Delta na Ouémé, yana tsakanin latitude 6° 33'N da 8° 15' da meridians 1° 50' da 2° 00' (Zinsou et al., 2016). Deltaananan Delta na Ouémé ya fara ne bayan karamar hukuma ta Adjohoun a cikin sashen Ouém kuma ya ƙare a facade ta kudu inda kogin ke kwarara zuwa cikin lagoon hadaddun '' Nokoué-Porto-Novo '' (Lalèyè et al., 2004). Nau'in yanayin subequatorial, wanda ke da yanayi biyu na damina da lokacin rani biyu. A gefe guda kuma, tsarin tsarin ruwa ya dogara da yanayin Sudani (arewa-Benin) tare da karancin ruwa yawanci yakan dauki watanni bakwai (Nuwamba zuwa Yuni) da lokacin ambaliyar ruwa (Yuli zuwa Oktoba) (Lalèyè, 1995). Tsarin tsire-tsire tare da yankin yana tattare da fadama wanda tsire-tsire masu shaƙatawa ke mamaye shi da hyacinth na ruwa (Eichornia crassipes), lily water (Nymphaea lotus), letas ɗin ruwa (Pistoia stratiotes) da lemna (Lemna coupleciostata). Hakanan akwai dazuzzuka masu fadakuwa, wadanda suka mamaye dabino na Raphia (Raphia hookeri) da dabinon mai (Elaeis guineensis). Bangaren kwarin da ruwa ya rufe yana da matukar amfani a cikin kifi (Zinsou et al., 2016).

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