Submissions of parties and the law
8To be successful in the substantive case, the Prosecutor is required to prove that the watercourse at the location where the earthen embankment was built falls within the definition of a "River" in section 5 of the Water Act 1912. The section provides as follows:
"River" includes:
(a)a stream of water, whether perennial or intermittent, flowing in a natural channel, or in a natural channel artificially improved, or in an artificial channel which has changed the course of the stream.
(b)an affluent, confluent, branch or other stream of water into or from which a stream referred to in paragraph (a) flows, and
(c)anything declared by the Ministerial Corporation by order published in the Gazette to be a river.
but does not include anything declared by the Ministerial Corporation by order published in the Gazette as not being a river and, unless the regulations otherwise provide, does not include those waters of a tidal river that at any time are not capable of being used for irrigation or for watering stock.
9The definition refers to gazetted orders declaring streams to be rivers. The provision allows the Ministerial Corporation to declare by order published in the Gazette a watercourse not to be or to be a river. On 24 March 2006 the Director General of the Corporation published in the Government Gazette a declaration which had Four Schedules. Schedule 1 provides that certain streams are not rivers. Schedule 2 provides that certain streams are rivers. Schedule 3 encompasses a list of topographic maps and Schedule 4 prescribes the method for determining the stream order of a watercourse known as the Strahler System. The material Gazetted is lengthy comprising many pages.
10In essence, the Prosecution contends that it has proved that Nowlands Creek is a "river" within the meaning of 5(1)(a) and (b). The Defendant's submission is to the contrary. It contends that the proviso within section 5 applies bringing the provisions contained in the order Gazetted on 24 March 2006 into play. The Defendant submits that at the point of the earthen embankment, Nowlands Creek is not a river because it is not a third or fourth order stream under the Strahler System and it does not maintain a "permanent flow of water, being a visible flow which occurs on a continuous basis". Thus it falls within Schedule 1 which provides that such streams of water are not "rivers".
11The Prosecution submits that it has proved its case by any one of the following routes:
(i)The definition of "river" as contained within section 5(1) of the Water Act is satisfied whether in terms of Paragraphs (a) or (b) thereof.
(ii)By showing that the provisions of the Order made pursuant to section 5(1) of the Water Act gazetted in the NSW Government Gazette No.37 at page 1500 on 24 March 2006 (the 24 March 2006 Order) do not apply in any event.
(iii)As an alternative to (i) and (ii) above, if it is held by the Court that the 24 March 2006 Order does apply, then under Schedule 2 Clause 1(a)(i) and (ii) Nowlands Creek is a river being a stream of water represented on a topographic map listed in Schedule 3 of that order and being a third, fourth or higher order stream under the Strahler system.
(iv)As an alternative to (i), (ii) and (iii) above, if it is held by the Court that the 24 March 2006 Order does apply, and that the order of the Creek is 1st or 2nd order, then under Schedule 2 Clause 1(b)(iii) of that order Nowlands Creek is a stream of water that maintains a permanent flow of water on a continuous basis and is therefore relevantly a river.
(v)By the failure on the part of the defendant to bring itself within the terms of any exemption, proviso or exclusion to the definition of River such as the exclusion provided for in Schedule 1 of the 24 March 2006 Order.
(vi)Regardless of whether, at the point where the dam is located on Nowlands Creek, that part of the watercourse is a River, the dam on Nowlands Creek is a "work to which Part 2 of the Water Act extends" pursuant to subsection (a) and/or (b) of the definition in section 5(1) of the Water Act of "Work to which this Part extends" because it is a work:
(a) which is connected with, or which affects the quantity or use of water in, a river or lake;
(b) which affects the quantity of water flowing in, to or from, or contained in, any such river or lake.
12The Defendant submits that the Prosecution has not proved its case because it has not proved that Nowlands Creek is a river at the point where the earthen dam was constructed. The Defendant contends that Nowlands Creek does not fall within the definition of a "river", is not a third or higher order of stream and does not have a continuous or permanent flow of water at the point where the dam was constructed.
13References were made in submissions to cases which have considered the provisions of the Water Act 1912 and the definition of what constitutes "a river" at common law. O'Keefe v Water Management Ministerial Corporation [2010] NSWLEC 9 relates to both aspects and being a decision of the NSW Land and Environment Court it binds this Court. Reference was also made to the comments of Barwick CJ in Knezovic v Shire of Swan-Guildford (1968) 118 CLR 468. In that case the Chief Justice said [footnotes omitted]:
In Gartner v Kidman, the majority of the Justices participating adopted a passage from Angell on Watercourses, 5th ed. (1854), p.3, as stating the meaning at common law of a watercourse, namely:
".... a watercourse consists of bed, banks and water: yet the water need not flow continuously and there are many watercourses which are sometimes dry. There is, however, a distinction to be taken between a regular flowing stream of water which at certain seasons is dried up and those occasional bursts of water which at times of freshet or melting of ice and snow descend from the hills and inundate the country."
It seems to me, on an examination of such authorities as exist and of the work of recognized writers on this subject, as well as the decision of the Court, that it is settled that a watercourse consists of a stream with a bed, with banks, and water. That the flow of water in the stream is intermittent or seasonal will not prevent what would otherwise be a watercourse from being accounted such: but though it is quite true that a watercourse may exist though its bed be dry for some periods, the watercourse, in my opinion, must exhibit features of continuity, permanence and unity, best seen, of course, in the existence of a defined bed and banks with flowing water. It must, in my opinion, essentially be a stream and be sharply distinguished from a mere drain, or a drainage depression in the contours of the land which serves to relieve upper land of excess water in times of major precipitation. It is not enough that the water, when it does flow, does so in what may be seen as a defined course or channel. In the case of a drainage depression, the water being drained off can be expected to flow in the lowest portion of the contours confined by the rising levels of the adjacent land: thus water can be seen when flowing to do so in what could be called a defined channel. If the seasonal rainfall is within an average tolerance in amount and timetable, the flow in the depression may well exhibit some regularity in the depth of water flowing in the contour depression and in the extent to which it spreads as it flows. If there is some such normality in the volume flowing, the impression of a defined channel with limiting margins will be enhanced. If as I would expect to be the case, there is considerable variation in the rainfall and in the volume and velocity of the water flowing in the depression, the impression of a defined channel may be considerably less. But in any event, the existence of such a defined channel will not make the drainage depression a watercourse nor the limiting margins of the water flow in a rainy season or period "banks" of a stream. Thus though water when it flows in such a period flows in what can be called a defined channel, such a drainage depression will lack banks and a bed in the proper sense of that term, that is to say, identifiable margins of a continuous and permanent stream which contribute to its unity whether or not water is in fact continuously flowing over the bed. The word "occasional" in the quotation from Angell on Watercourses will here, in my opinion, embrace seasonal events, even if they occur with some regularity from season to season."