Mezue ahịrịokwu na-esonụ: A na-ejikwa berms na-achịkwa erosion na sedimentation site n'ibelata ọnụego nke elu mmiri. Ihe ndị ahụ na-eme ka mmiri na-asọ nwayọọ nwayọọ, ma ọ bụ na-eme ka mmiri na-asọ n'ebe ndị mmiri na-anaghị erekasị, si otú ahụ na-ebelata mmetụta ọjọọ nke mmiri na-asọ n'elu ala. Mgbe afọ 2010 gasịrị
" Deepwater Horizon " mmanụ wụfuru na Gulf of Mexico, owuwu nke berms e mere iji gbochie mmanụ site na-eru na-adịghị ike Louisiana wetlands (nke ga-eme ka oke erosion) e chọrọ n'oge na, na e eze mma site gọọmenti etiti na ufọt ufọt June, 2010, mgbe ọtụtụ ọdịda ịkwụsị na-agụnye mmanụ leak na ndị ọzọ elu teknụzụ.