Territory Stories

End of Wet Season Stream Flow Measurements, Roper River, May 2014

Details:

Title

End of Wet Season Stream Flow Measurements, Roper River, May 2014

Creator

Kerle, Errol; Waugh, Peter; Northern Territory. Department of Land Resource Management

Collection

E-Publications; E-Books; PublicationNT; Aug-14

Date

2014-06-01

Location

Roper River

Description

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.

Notes

Made available via the Publications (Legal Deposit) Act 2004 (NT)

Table of contents

Summary -- Aim -- Introduction -- Observations -- Discussion -- Conclusion -- Recommendations -- References

Language

English

Subject

End of Wet Season Stream Flow Measurement

Publisher name

Northern Territory Government

Place of publication

Palmerston

Series

Aug-14

Format

24 pages : illustrations, colour maps ; 30 cm.

File type

application/pdf

ISBN

1743500637; 9781743500637

Use

Attribution International 4.0 (CC BY 4.0)

Copyright owner

Northern Territory Government

License

https://creativecommons.org/licenses/by/4.0/

Parent handle

https://hdl.handle.net/10070/260106

Citation address

https://hdl.handle.net/10070/492338

Page content

14 Figure 10 Roper River Turbidity Profile May 2014 Temperature Water temperature varied between 24C and 33C, with the highest temperatures recorded downstream of significant groundwater discharge sites Mataranka Thermal Springs (33C) and Little Roper River (31C). Riverine water temperatures varied between 24C and 27C, with variations largely due to time of day the measurement was taken, and site characteristics. Figure 10 shows the temperature profile of the Roper River. Figure 11 Roper River Temperature Profile May 2014 Total and soluble nutrients Total nitrogen and phosphorus concentrations ranged from 110 to 350 g/L and 16 to 30 g/L respectively. Ammonia concentrations were low (<1 to 8 g/L) throughout the catchment, with the exception of site G9035316 on the Waterhouse River, with 155 g/L. The high concentration of NH3 at this site is unusual and could not be confirmed. Nitrate was elevated at Mataranka Thermal Spring and the Little Roper River at Mataranka Homestead. Relatively high nitrate concentrations persist downstream of the hot spring but return to < 10 g/L downstream of Elsie Homestead. Soluble phosphorus ranged from 3 to 8 g/L.


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