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 26 of 167. 11 i r I' Hl14/1-MRS I)}HI ~:II ____ ~ ____ ~~N_o_v __ 2_o_,~_=1~98=3~ __________________________________________________________ 1~2~.~ __ _1 t :1 I I . ~ I 1 . ~ I I L I .... (;E I j .~ H .'~ I I .~ I I I lJ I u I L For the rainfall records identif.ied from thp above ana I lsis run-off from all catchments has been estimated. The rlll!off co-efficients adopted fo!:" the various catchment types are shown in Table 5~ These co-efficients have been estimated based on previous experience. The reductions in runoff co-efficient froM the dryer periods have been estimated from examination of the rainfall and runoff patterns for low rainfall years. TABLE 5 RUNOFF COEFFICIENTS (%) HONnI WASTE ROCK DUMP CA TCH}O.ENT DRIED TAILINGS HINE PIT & PROCESS AREA & PROCESS RESERV 0 If' CA TCRME "T WET TAILINGS AND i,ATERED AREAS January 8 15 30 100 February 10 20 40 100 Hsrch 12 25 50 100 April 5 10 20 100 Hay 0 0 a 100 June 0 0 0 100 July 0 0 0 100 , ,ugust 0 0 0 100 September a 0 0 100 October 0 0 5 100 Clovember 2 5 10 100 December 5 10 20 100 NOTE : These co-efficients are assumed appropriate for average conditions. For dryer than average conditions the co-efficients should be reduced in the following way , i) Watered areas remain the same ii) Owe!:: areas reduce to 3/4 for 1 in 5 year rlry 2/3 for 1 in 10 year dry 1/2 for 1 in 50 year dry Using the runoff co-efficients from Table 5 and rainfall figures in Table 3, total runoff during selected years has been estirnated~ These estimat~s are given in Table 6.