The continued operation of Condition 7 from 4 October 2012 to 19 February 2018
28 Pursuant to the transitional provisions of the WM Act, the WALs which came into effect on the coming into force of the 2012 WSP remained subject to the conditions of the surface water licences which they replaced in so far as the conditions were applicable to the extraction of water.
29 In particular, on and from 4 October 2012, Condition 7 of the water surface licences (i.e., the cease to pump condition extracted at [16] above) continued to apply to the WALs under the WM Act that replaced the former water surface licences.
30 On around 25 March 2014, Ken and Judith Kimber received written notice from the NSW Department of Primary Industries (Office of Water) that "the conditions for the Water Sharing Plan for your area have not been developed as yet, in the interim you must abide by the conditions of your previous Water Act licence". A copy of this letter is at Tab D. This remained the position until 19 February 2018. That is, Condition 7 continued to apply to the taking of water under the WALs until 19 February 2018 when Ken Kimber received letters from the Department of Industry which are referred to below.
The Flow Condition notified on 19 February 2018
31 On 17 February 2017, Ken Kimber received a letter from the Department of Primary Industries (Water) inviting submissions in response to a Status and Issues Paper that had been released for the Murrumbidgee surface water resource. A copy of this letter is at Tab E. The Status and Issues Paper to which the letter referred is at Tab F.
32 On 31 March 2017, Ken Kimber, on behalf of a group of irrigators in the Upper Murrumbidgee system, sent a submission to the Department of Primary Industries in response to the SW9 Status and Issues Paper. A copy of this submission is at Tab G.
33 On 19 May 2017, Ken Kimber received a telephone call and had a discussion with David Bishop (Water Planner at the NSW Department of Industry) who said that he was not aware of any proposal to change the cease to pump rules.
34 Ken Kimber did not receive any other communications from DPI Water in response to the submission made on 31 March 2017, nor any communications in relation to licensing until 19 February 2018.
35 Under cover of letters dated 19 February 2018, which letters Ken and Judith Kimber received by post, the Department of Industry sent Ken and Judith copies of amended versions of their water access licences under the WM Act.
Unregulated River Licences
a. WAL 33305 (40AL414167), being an "Unregulated River" category licence with a share component of 2,273 units (nominating Approval 40CA414168);
b. WAL 33291 (40AL414164), being an "Unregulated River" category licence with a share component of 2,273 units (nominating Approval 40CA414165);
Domestic and Stock Licences
c. WAL 33285 (40AL414166), being a "Domestic and Stock" category licence" with a share component of 5.5 ML (nominating Approval 40CA414168);
d. WAL 33297 (40AL414163), being a "Domestic and Stock" category licence with a share component of 5.5 ML (nominating Approval 40CA40414165).
36 The Department of Industry letters included the following notification:
There are two types of conditions that apply to licences and approvals:
a. Plan conditions that are required to be imposed by the Murrumbidgee Unregulated and Alluvial Water Sources. These apply immediately to your licence and/or approval and are identified with the letter 'M'
b. Other conditions that are proposed to apply to your licence and/or approval which are identified with the letter 'D' or 'N'.
Copies of your approvals/licences are attached. If you have concerns about the conditions marked 'D' or 'N' please contact WaterNSW to make a submission within 28 days from the date of this letter
37 WALs Nos. 33305 and 33291 attached to the Department of Industry letter of 19 February 2018 contained an amended form of cease to pump condition as compared with Condition 7 referred to and extracted at [16] above. The cease to pump condition contained in each of those WALs attached to the letter of 19 February 2018 was in the following amended terms (Flow Condition):
"Water must not be taken from the Murrumbidgee II Water Source when flows are in the Very Low Flow Class, which means that the flow is 27ML/day or less at the Murrumbidgee River Billilingra gauge [No. 410050].
This restriction does not apply if water is to be taken from an off-river pool, an off-river dam pool, a runoff harvesting dam or an in-river dam pool".
38 The Flow Condition was identified with the letter "M" as a mandatory condition, and, as such, it fell outside the scope of the discretionary conditions as to which submissions had been invited by the Department of Industry in its letters.
39 The letters also enclosed copies of Approval 40CA414168 and Approval 40CA41465.
40 At all relevant times from on or about 19 February 2018, upon the notification provided by way of the Department of Industry letters of that date, WAL 33305 and WAL 33291, were subject to the Flow Condition in the form set out in paragraph 43 above. That is, Condition 7, which related to the height of the river corresponding to a reading on the Billilingra Gauge of 0.58 metres ceased to apply. The Flow Condition did not contain a reference to the height of the river.
41 Work 1 extracted water from an anabranch channel of the Murrumbidgee River (being a section of the river that diverts from the main channel and re-joins the main channel downstream). Works 2 and 5 extracted water from the main channel of the Murrumbidgee River. None of Works 1, 2 and 5 extracted water from an 'off-river pool', an 'off-river dam pool', a 'runoff harvesting dam' or an 'in-river dam pool'.
42 At the time Ken Kimber received the Department of Industry letters of 19 February 2018, he did not read them. He gave them to his administrative assistant for filing. He did not realise that the cease to pump condition on his water access licences had been changed. Ken Kimber did not make Luke Kimber aware of these letters and did not provide him with copies of them.
43 It was not until after 12 December 2019 when the NRAR officers attended Dromore Station (as referred to below), that Ken Kimber first read the letters dated 19 February 2018.
44 On 2 November 2018, Ivars Reinfelds, Senior Research Scientist in the Department of Primary Industries sent an email to lpkimber@bigpond.com titled "Murrumbidgee flows and rules", which referred to the Flow Condition of 27ML/D. A copy of this email is at Tab J.
Metering data
45 At all relevant times, Works 1, 2 and 5 were metered with a State-owned electromagnetic water flow meter together with a data logger and data telemetry equipment. Each telemetered meter was installed in connection with a water outlet pipeline connected to the relevant water supply work. When water was pumped from the river, the flow meter collected flow information and stored it locally. The data was then sent every 15 minutes to a remote telemetry unit (RTU) located adjacent to the meter. From the RTU, the data was transmitted to WaterNSW's ClearSCADA system.
46 During the charge periods, the meters connected to Works 1, 2 and 5 did not log any events or alarms indicating that the normal function of the meter had been disturbed (for instance, because of a communication failure or a low battery), and no changes or amendments were made to the data.
Flow rate data
47 At all relevant times, WaterNSW operated a water monitoring station at Billilingra Gauge (station number 410050) which was used to generate real-time flow rate data for the Murrumbidgee River at that location.
48 Billilingra Gauge is downstream of Dromore Station.
49 In general terms, the flow-rate data is processed as follows:
a. a level sensor at the gauge records the height of the river at the gauge location ("river height data");
b. the river height data is transmitted at regular intervals to WaterNSW's electronic databases via telemetry;
c. the river height data is used by WaterNSW's systems to generate "flow data", based on a Rating Table which plots the relationship between river height and river flow (discharge); and
d. the flow data is automatically published on WaterNSW's real time data website and WaterLive app and updated approximately every hour ("provisional flow rate data").
50 As part of WaterNSW's quality assurance procedures, water monitoring officers attend the Billilingra Gauge approximately every two months to perform routine maintenance tasks and to take certain steps to validate the previously recorded flow rate data (after which "quality assured data" is produced).
51 During these site visits, the water monitoring officers check that the level sensor is accurately recording the height of the river (allowing for a margin of error of +/- 10mm). Where required, the previously recorded river height data is adjusted to take account of any inaccuracies arising beyond the accepted margin of error. No such adjustment was required for the duration of the offence periods.
52 During these site visits, the water monitoring officers also perform "gaugings", which are manual point-in-time measurements of the flow rate of the river. Collecting gaugings over time enables WaterNSW to continue to validate and refine the Rating Table (by ensuring that gaugings are falling within plus or minus 10% of the flow rate predicted by the Rating Table). If an update to the Rating Table is made after a site visit, recent river flow rate data may be re-interpreted with the updated Rating Table to reflect the refined plot of the relationship between river height and river flow. This occurred for the flow rate data during the offence periods. The quality assured version of the flow rate data reflects an update to the Rating Table.
53 After these steps are completed, the provisional data (incorporating any adjustments) is archived by WaterNSW as "quality assured data". Quality assured data is available on WaterNSW's website (see [57] below).
Data published online
54 At all relevant times, WaterNSW used provisional flow rate data to publish "live" water levels (river height) and flow rates for the Billilingra Gauge, at hourly intervals, via its real-time-data website and the WaterLive app. The "WaterLive" app is a publicly available application for Android and Apple IOS devices which provides access to WaterNSW's water monitoring data.
55 At all relevant times, the WaterLive app could be used to access the following information for the Billilingra Gauge:
a. the water level (river height) at the gauge as at the most recently recorded hourly interval (including a time stamp of when this value had last been updated);
b. the recorded flow rate at the gauge at the most recently recorded hourly interval (including a time stamp of when this value had last been updated).
56 The data published by WaterNSW on the real-time-data website also includes a Daily River Report for the Murrumbidgee River, which publishes the water level and flow rate at different gauges along the river (including the Billilingra Gauge) as at 6 am every day. The Daily River Reports for 19 November 2019 to 13 December 2019 are at Tab K.
57 Once quality assured data has been generated in accordance with the steps outlined at [50]-[52] above, it replaces the provisional data published on WaterNSW's website (which is referred to at [54] above).
The Offending Conduct
58 In November 2019, Luke Kimber planted summer fodder crops at Dromore Station, including corn. He used water extracted from the adjacent Murrumbidgee River under Ken Kimber's WALs to irrigate those crops.
59 During certain periods between 20 November 2019 to 12 December 2019, Luke Kimber extracted a total volume of approximately 95.18 megalitres of water from the river for irrigation of the corn, lucerne and other crops on Dromore Station in circumstances when the taking of water was prohibited by the Flow Condition in WALs 33305 and 33291.
60 The extraction of this approximately 95.18 megalitres of water in contravention of the Flow Condition constitutes the offending conduct in these proceedings. In respect of the taking of that water, Ken Kimber is guilty of the offences charged against him under s 60B of the WM Act as the holder of the WALs and Luke Kimber is guilty of the offences charged against him as the person who took the water.
61 The circumstances of the offending conduct is further explained below.
62 Luke Kimber took water pursuant to WAL 33305 via Works 1 and 2, when the flow rate in the Murrumbidgee River was below 27ML/day at Billilingra Gauge, as specified in the Sequence 1 charge as follows:
Seq Pumping period Flow in river at start and finish Flow in river at start and finish Height of river at start and finish Quantity of water taken
(quality assured data) (live data)
Work 1
1(a) 20/11/19 20:15 12.338 ML/day 11.826 ML/day 0.592 3.28 ML
- - - -
21/11/19, 10:00 10.590 ML/day 10.325 ML/day 0.583
1(b) 23/11/19 17:00 6.187 ML/da 6.984 ML/day 0.556 3.75 ML
- - - -
24/11/19 8:45 5.667 ML/day 6.554 ML/day 0.552
1(c) 24/11/19 13:30 4.927 ML/day 5.938 ML/day 0.546 5.32 ML
- - - -
25/11/19 15:00 1.945 ML/day 3.227 ML/day 0.514
1(d) 2/12/19 8:15 1.589 ML/day 2.888 ML/day 0.509 9.23 ML
- - - -
3/12/19 22:30 9.297 ML/day 9.384 ML/day 0.576
1(e) 11/12/19 18:45 13.390 ML/day 12.878 ML/day 0.597 11.12 ML
- - - -
13/12/19 11:00 13.390 ML/day 12.878 ML/day 0.597
Work 2
1(f) 20/11/19 9:00 13.390 ML/day 12.878 ML/day 0.597 3.83 ML
- - - -
21/11/19 00:15 12.338 ML/day 11.826 ML/day 0.592
1(g) 22/11/19 6:30 8.270 ML/day 8.620 ML/day 0.57 16.61 ML
- - - -
25/11/19 12:00 2.076 ML/day 3.368 ML/day 0.516
1(h) 25/11/19 13:30 1.945 ML/day 3.227 ML/day 0.514 4.38 ML
- - - -
26/11/19 8:15 0.595 ML/day 1.676 ML/day 0.488
1(i) 1/12/19 17:00 1.339 ML/day 2.634 ML/day 0.505 4.00 ML
- - - -
2/12/19 9:30 1.589 ML/day 2.888 ML/day 0.509
1(k) 11/12/19 18:45 13.390 ML/day 12.878 ML/day 0.597 3.61 ML
- - - -
12/12/19 12:30 12.338 ML/day 11.826 ML/day 0.592