Chapman River
It flows in a southerly direction, passing through the town of Nabawa in the Shire of Chapman Valley, and continuing south to about the latitude of Geraldton.It then descends to the coastal plain, turning to the west-north-west and disgorging into the Indian Ocean at Bluff Point in Champion Bay.This land is heavily fertilised and subject to soil erosion, so the river carries high concentrations of nitrogen, phosphorus and chlorophyll a.Following heavy rains in June and July 1986, it was estimated that the Chapman River washed 39,000 tons of suspended sediment into the ocean, representing the loss of some A$73,000 of soil nitrogen.[4] The Chapman River was named on 7 April 1839 by the explorer George Grey while on his second disastrous expedition along the Western Australian coast,[5] and was probably named after John Chapman, later a British Conservative Member of Parliament but then deputy chairman of the Western Australian Company.