Detention basin

kwandon tsare
Kwandon da ake tsare da shi ko kwandon da ake ajiyewa wani yanki ne da aka tono akan ko kusa da magudanan rafuka, koguna, koguna ko magudanan ruwa don kariya daga ambaliya kuma, a wasu lokuta, zaizayar ƙasa ta hanyar adana ruwa na ɗan lokaci kaɗan. Ana kuma kiran waɗannan tafkunan busassun tafkuna, riƙon tafkuna ko busassun kwandunan tsarewa idan babu tafkin ruwa na dindindin.

Tafkunan tsare waɗanda aka ƙera don riƙe wasu ƙarar ruwa a kowane lokaci ana kiran su kwandon shara. A cikin tsarinsa na asali, ana amfani da kwandon da aka tsare don sarrafa yawan ruwa yayin da yake da iyakacin tasiri wajen kare ingancin ruwa, sai dai idan ya haɗa da fasalin tafkin dindindin.[1]