Territory Stories

Renison Goldfields Consolidated Limited, Pine Creek Project. Groundwater Investigation Stage 2, Establishment of Borefield and Management Studies. Report H114/3-AA.

Details:

Title

Renison Goldfields Consolidated Limited, Pine Creek Project. Groundwater Investigation Stage 2, Establishment of Borefield and Management Studies. Report H114/3-AA.

Creator

Coffey & Partners Pty Ltd

Collection

E-Publications; E-Books; PublicationNT; Report no. 87/1984

Date

1983-11-01

Notes

Date:1983-11

Language

English

Publisher name

Northern Territory Government

Place of publication

Darwin

Series

Report no. 87/1984

File type

application/pdf

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/10070/228435

Citation address

https://hdl.handle.net/10070/674167

Page content

Technical Report WRD84087 Viewed at 14:07:14 on 29/07/2010 Page 22 of 167. ;,1 :1 \ , , . H114/1-t4RS Nov 25, 1983 TABLE 3 RAINFALL CATCHMENTS CATCfu'lENT Natural Catchment East of high;"lay lr'lest of waste rock dump Around decant pond Waste rock dump Pit/process are~ Tailings dry (assumed 80%) - wet (assumed 20%) Process Reservoir Catchrnen t 110 t .P.reas Process reservoir Decant pond The availability of runoff for the drYr 1 in 10 year dry and 1 in 50 estimated in the following way: AREA (h,,) 93 33 21.7 78 33 24 6 22.4 20.6 3 rneQ~an year, 1 in 5 year year dry cases have been i) The rUllOff from the natural catchments has been estimated for each of the years where historical rainfall r~cords "~e available (1874-1982). ii) The simulated yearly runoffs were ranked and the ~edianr 1 in 5 year low , 1 in 10 year low and 1 in SO year low runoffs estimated. iii) The rainfall records for 'i1e years corresponding to the various runoff values estimated in{ii) were used to estimate runoff from all ca~chrnents. In this way total runoff values appropriate for the median, 1 in 5 year, 1 in 10 year and 1 in 50 year eve~ts have been estimated. 10. .$ i!$C() ,";>.