ɐ stˈʌdi pɹɪpˈɛɹd fɔːɹ lˈeɪk mˈækweɪɹi sˈɪɾi kˈaʊnsəl ɪn nˈaɪntiːnhˈʌndɹɪd nˈaɪnti fˈaɪv ˈɛstᵻmˌeɪɾᵻd ðæt sˈɛdɪmənt lˈoʊdz tə lˈeɪk mˈækweɪɹi wɜː pɜːɹ ˈænəm, wˌɪtʃ wʌz vˈɛɹi dˈɪfɹənt fɹʌmðə sˈɛdɪmənt lˈoʊdz pɹˈaɪɚ tə jˌʊɹɹəpˈiən dɪvˈɛləpmənt, ˈɛstᵻmˌeɪɾᵻd æt pɜːɹ ˈænəm.
A study prepared for Lake Macquarie City Council in 1995 estimated that sediment loads to Lake Macquarie were  per annum, which was very different from the sediment loads prior to European development, estimated at  per annum.