Territory Stories

Alice Springs recreational dam hydrology report project 6



Alice Springs recreational dam hydrology report project 6


Jackson, D.; Paige, D.


E-Publications; E-Books; PublicationNT; Report no. 12/1979







Publisher name

Northern Territory Government

Place of publication



Report no. 12/1979

File type



Attribution International 4.0 (CC BY 4.0)

Copyright owner

Northern Territory Government



Parent handle


Citation address


Page content

Technical Report WRD79012 Viewed at 00:02:46 on 18/02/2010 Page 71 of 153. I I I I I I I 1 I I I I I I 1 I I I I 45 The 40 year life of the reservoir under high suspended load conditions stresses the necessity for management of catchment land use, especially in drought periods. The present reconstruction of the Stuart Highway through the catchment may also lead to similar high sediment conditions. Care should be taken in construction to preserve natural slopes and vegetation and to prevent erosion of road embankments. 3.5 Sediment Trap In order to alleviate the effct of bed load on the dam a sediment trap was considered. A suitable site exists immediately upstream of the reservoir where ~he two arms of the '1'cdd River diverge, (figure A). It is approximately 50m wide, 700m long and 3m high. Table 8 shows trap efficiencies for different sand particle sizes and peak inflow rates at the sediment trap_ The results show that the sediment trap will retain most of the sand fractions down to the FSa The trap efficiency for the FSa and VFSa fractions can be improved ny increasing the surface area of the sand trap to minimise overflow velocities. Tabl-e 8 TRAP E~'F IC rENCI ES FOR DIFFERENT PARTICLE SIZES AND PEAK INFOR RATES - SEDIMENT TRAP (PERCENT). Return Period Peak Trap . Efficiencies .. (Years) In flo" VCSa CSa MSa FSa VFSa Rate (m 3 Is) 5 350 100 100 100 100 65 10 490 100 100 100 100 46 20 650 100 100 100 100 35 50 850 100 100 100 82 27 100 1000 100 100 100 70 23 500 1400 100 100 100 50 16

Aboriginal and Torres Strait Islander people are advised that this website may contain the names, voices and images of people who have died, as well as other culturally sensitive content. Please be aware that some collection items may use outdated phrases or words which reflect the attitude of the creator at the time, and are now considered offensive.

We use temporary cookies on this site to provide functionality.
By continuing to use this site without changing your settings, you consent to our use of cookies.