Territory Stories

A longitudinal survey of the water quality of the Katherine and Daly Rivers, May/June 2016

Details:

Title

A longitudinal survey of the water quality of the Katherine and Daly Rivers, May/June 2016

Creator

Shult, J

Editor

Long, C

Issued by

Northern Territory. Department of Environment, Parks and Water Security. Water Resources Division

Collection

E-Publications; E-Books; PublicationNT; DEPWS Technical Report No. 43/2020

Date

2020-10-10

Location

Katherine River; Daly River; Daly River Catchment

Abstract

In May and June 2016, a longitudinal survey of almost the entire length of the Katherine and Daly Rivers was undertaken. The primary purpose of the survey was to map the thalweg of the river for hydrodynamic modelling and to collect mesohabitat data. This survey presented an opportunity to also obtain a comprehensive snapshot of the longitudinal variability of water quality, which is presented in this report.

Notes

Made available by via Publications (Legal Deposit) Act 2004 (NT).

Table of contents

1. Introduction; 2. Methods; 3. Results; 4. Discussion; 5. Conclusion; 6. References; Appendix 1; Appendix 2.

Language

English

Subject

water quality; groundwater; longitudinal survey; water samples; water monitoring

Publisher name

Northern Territory Government

Place of publication

Palmerston

Edition

1

Series

DEPWS Technical Report No. 43/2020

Format

39 pages : colour maps and diagrams; 30 cm

File type

application/pdf

ISBN

9781743502648

Use

Attribution International 4.0 (CC BY 4.0)

Copyright owner

Northern Territory Government

License

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

Related links

https://denr.nt.gov.au/

Parent handle

https://hdl.handle.net/10070/808264

Citation address

https://hdl.handle.net/10070/808266

Page content

A longitudinal survey of the water quality of the Katherine and Daly Rivers, May/June 2016 Department of Environment, Parks and Water Security 5 October 2020 Page 15 of 39 3 Results 3.1 Discharge The 2015/16 wet season had slightly below average rainfall at Tindal Air Base with 974 mm recorded (Source: Australian Bureau of Meteorology, Station 14932). A late run-off event occurred in the dry season on 12 May 2016, 10 days prior to the start of the first survey period (Figure 5). Water levels were receding to dry season baseflow levels at the time of the survey. Over the period of the May survey, discharge in the Katherine River (gauging station G8140536, Wilden Station) fell from 5.9 to 5.5 m3/s. Daly River discharge during the June survey (G8140098, Theyona Station) was between 22.4 and 21.5 m3/s. Figure 5. Hydrograph for the 2015/16 hydrological year for the Katherine River at Wilden Station (near start of survey reach) and Daly River at Theyona Station (in the middle reaches of the Daly River). Grey shaded areas indicate survey period for the Katherine and Daly Rivers respectively. (Note: logarithmic scale for discharge)


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