Queensland Consolidated Acts Queensland Consolidated Acts(1) A nominated waterway, for a wild river declaration, is the part of a drainage channel in the preservation area that—
(a) is between the upstream and downstream limits, described in the wild river declaration, of the drainage channel; and
(b) extends laterally to the outer banks of the drainage channel.
(2) In this section—
depositional feature means a deposit of clay, sand or silt that is carried in suspension during high flows and deposited in areas where there is a slow flow of water.
Examples—
mud deposited in cracks in rocks
sand deposits behind rocks
drainage channel means a passageway or depression that can contain flowing water, whether flowing continuously or periodically.
floodplain means an area of relatively flat land—
(a) next to a drainage channel; and
(b) covered by water when water overflows from the drainage channel.
outer bank, of a drainage channel, means—
(a) if there is a floodplain next to the drainage channel—the place where the top of the bank of the drainage channel meets the floodplain; or
(b) if there is not a floodplain next to the drainage channel—the place on the bank of the drainage channel marked by a scour mark or depositional feature.
scour mark means—
(a) a mark made on a bank of a drainage channel by the sweeping action of suspended sediments in water during high flows; or
(b) a mark that can be identified by weathering stains, or the absence of lichens, on erosion-resistant surfaces of a bank of a drainage channel.
Example of an erosion-resistant surface—
rock