Alligator Rivers region regional surface water quality monitoring : November 1978 - April 1981
Alligator Rivers Region - Regional Surface Water Quality Monitoring, Volumes 1,2,3 (Plus draft)
Northern Territory. Department of Transport and Works. Water Division, Environmental Section
E-Publications; E-Books; PublicationNT; Report ; 49/1983
1983-04-01
At head of title: Water Division, Dept. of Transport & Works, Northern Territory. "April 1983".
English
Water quality -- Northern Territory -- Alligator Rivers Region; Hydrology -- Northern Territory -- Alligator Rivers Region
Northern Territory Government
Darwin
Report ; 49/1983
3 volumes. ; 30 cm
application/pdf
Attribution International 4.0 (CC BY 4.0)
Northern Territory Government
https://creativecommons.org/licenses/by/4.0
https://hdl.handle.net/10070/672725 [Alligator Rivers region regional surface water quality monitoring : November 1978 - April 1981 - WRD83049_v_1.pdf]; https://hdl.handle.net/10070/672727 [Alligator Rivers region regional surface water quality monitoring : November 1978 - April 1981 - WRD83049_v_2.pdf]; https://hdl.handle.net/10070/672729 [Alligator Rivers region regional surface water quality monitoring : November 1978 - April 1981 - WRD83049_v_3.pdf]
https://hdl.handle.net/10070/229664
https://hdl.handle.net/10070/672725
https://hdl.handle.net/10070/672729; https://hdl.handle.net/10070/672727
Technical Report WRD83049 Viewed at 14:07:10 on 29/07/2010 Page 40 of 440. I I I I I I I I I I I I I I I I I I I I 39. 7. RESULTS fu~D DISCUSSIONS 7.1 Introduction Results are presented in Appendix Dl in tabular form. All results obtained for each point over the sampling period are presented, however, there has been some screening to tag anomalous results. Anomalous results may be produced by contamination laboratoryerrors and transcription errors, and are further discussed in section 7.3. It will be noted that due to the delay bet-l~een sa.'Tipling and receipt of final results it is impossible to make checks on anomalous results. The delay between sampling and receipt of analysis results are normally in the range of 3-4 months and in some cases up to 6 months. This is a regrettable situation, but unfortunately cannot be avoided with the external analysis contract arrangements. i. 2 Smrilllaries The results for each site are summarised in Appendix Dl by the ranges, means and standard deviation of results. Also plots of parameters considered to be system indicators are shown in Appendix D2. These plots demonstrate changes between wet and dry seasons, and also the consistently low concentrations of most parameters presented, The parameters plotted as indicators are: nH Sodium Conductivity Susp. Solids Zinc Uranium Streamflow Rainfall as a.~ indicator of acidity as a.~ indicator of saline and groundwater saline infiltration as an indicator of ions in solution as an indicator of load and colour as a.~ indicator of heavy metals the basic species of interest presented as flow from gauging stations where present at sampling point, otherwise gauge heights recorded at time of sampling Presented as averages over 4 areas defined on ~lap 5. Water year plots are presented in Appendix D3 for selected parameters and selected sites, and these are useful in deducing changes in overall quality with time, and demonstrating contrasts between wet and dry seasons. Each site is considered separately, in some detail in Table 7 .1.