Heavier particles settle out first, sand above, silt above that, and very fine clay and organic matter will stay in suspension for days.
hˈɛviɚ pˈɑːɹɾɪkəlz sˈɛɾəl ˈaʊt fˈɜːst, sˈænd əbˈʌv, sˈɪlt əbˌʌv ðˈæt, ænd vˈɛɹi fˈaɪn klˈeɪ ænd ɔːɹɡˈænɪk mˈæɾɚ wɪl stˈeɪ ɪn səspˈɛnʃən fɔːɹ dˈeɪz.