End of Wet Season Stream Flow Measurements, Roper River, May 2014
Kerle, Errol; Waugh, Peter; Northern Territory. Department of Land Resource Management
E-Publications; E-Books; PublicationNT; Aug-14
2014-06-01
Roper River
Early dry season snapshot measurements were taken on the Roper River to establish water quality and quantity conditions at commencement of baseflow conditions. The snapshot measurements are used to: 1. Refine and calibrate the hydrological model used to assess resource availability and allocations. 2. Better define aquifer recharge/discharge zones along the river, and 3. Provide a dataset of comparable flow and water quality measurements at identical periods in the annual water cycle.
Made available via the Publications (Legal Deposit) Act 2004 (NT)
Summary -- Aim -- Introduction -- Observations -- Discussion -- Conclusion -- Recommendations -- References
English
End of Wet Season Stream Flow Measurement
Northern Territory Government
Palmerston
Aug-14
24 pages : illustrations, colour maps ; 30 cm.
application/pdf
1743500637; 9781743500637
Attribution International 4.0 (CC BY 4.0)
Northern Territory Government
https://creativecommons.org/licenses/by/4.0/
https://hdl.handle.net/10070/260106
https://hdl.handle.net/10070/492338
12 Figure 7 Roper River Conductivity Profile May 2014 pH All headwater sources (Little Roper River, Waterhouse River and Thermal Springs) have slightly acidic waters with pH between 6.3 and 6.9. Downstream from the confluence of Little Roper and Waterhouse Rivers, pH rises to a slightly alkaline 7.08 at G9030176. Despite higher alkalinity inflows from Elsey and Salt Creeks (7.4 and 7.3 respectively), overall pH falls back to 6.9 at G9035294 before rising steadily as the river continues downstream. Overall, pH measurements conducted in May 2014 were lower than those collected in the October 2013 snapshot measurements, probably due to dilution from wet season recharge and reduced retention period of water within the aquifer immediately after the wet season. Interestingly, pH levels in discharges from the North-West are significantly less than those collected in October, while those flowing from the South show much smaller variation. This is possibly due to higher rainfall totals to the north and shorter retention periods in the aquifer for water flowing from the north-west. Figure 8 Roper River pH Profile May 2014