Every creek aquifer and wetland are interconnected into catchment areas. Those areas which least human disturbance tend to be healthiest with Loganholme Wetlands, a wetland area with dense stands of Melaleuca Quinquinervia, ferns and reeds having a healthy balanced and functioning ecosystem. No mosquito problem there. Natural balanced systems manage that - with no cost to humans. This particular site is being closely monitored by Barry Fitzpatrick LACA's longterm waterways champion. Logan's waterways are important for migratory birds are well as the regular more local species recorded by various bird watching groups. Such a list is available here.