Chigumula chathu chotchinga ndi chida chowongolera kusefukira kwamadzi, njira yosungira madzi yokha ndi mfundo yolumikizira madzi kuti ikwaniritse kutsegulira ndi kutseka basi, komwe kumatha kulimbana ndi mvula yamkuntho komanso kusefukira kwamadzi, kuti tikwaniritse maola 24 akuwongolera mwanzeru kusefukira. Chifukwa chake tidachitcha "hydrodynamic Automatic flood gate", yosiyana ndi Hydraulic Flip UpChotchinga Chigumulakapena Electric flood gate.