Dealing with salinity in Wheatbelt Valleys - Department of Water

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FURTHER INVESTIGATIONS AND MANAGEMENT OPTIONS 1. Continue monitoring piezometer network to detect changes in the watertables 2. Development of management information options and tools such as groundwater models to help community test options. 3. Prepare town development plan with a view towards water and salinity issues 4. Pilot study for desalination plant and evaporation basin will be completed in 12 months from inception. The feasibility of extending and enlarging the program will be carried out. 5. Prepare salinity hazard maps showing the likely affected areas and time frame when salinity may develop. Use groundwater models to undertake ‘what if” management options. 6. Review water use and drainage systems in the town site for evidence of excessive recharge. 7. Develop low recharge farming systems for arable land 8. Airborne survey (magnetic and radiometric) for specific areas of the catchment to refine underground geology, delineate structures and determine depth to bedrock (thickness of regolith) and delineate soil systems for recharge mapping. 9. This information will enable the areas of high salinity risk to be better delineated and determine where the best yielding pumping bores maybe located. 10. Maintain and increase community support for water and salinity issues 11. Manage and monitor evaporation basins and desalination plant input/output and performance 12. Plan to develop a solar energy pond to generate power. Trial solar energy pond. REFERENCES Bettenay, E. and Hingston, F.J., 1964. Development and distribution of soils in the Merredin area, Western Australia. Aust. J. Soil Res. 2:73-186. George, R.J. and Frantom, P.W.C. 1990 Preliminary groundwater and salinity investigations in the eastern Wheatbelt. 2. Merredin Catchment. Division of Resource Management, Technical Report No 89, 68 pp. George, R. J., Nulsen, R.A., Ferdowsian, R. and Raper, G.P. 1999. Interactions between trees and groundwaters in recharge and discharge areas – A survey of Western Australian sites. Agricultural Water Management, 39:91-113. Matta, J. 2000. The Rural Towns Program Groundwater Modelling: The Merredin Catchment. Resource Management Technical Manual No. 189, 31 pp.
FURTHER INVESTIGATIONS AND MANAGEMENT OPTIONS 1. Continue monitoring piezometer network to detect changes in the watertables 2. Development of management information options and tools such as groundwater models to help community test options. 3. Prepare town development plan with a view towards water and salinity issues 4. Pilot study for desalination plant and evaporation basin will be completed in 12 months from inception. The feasibility of extending and enlarging the program will be carried out. 5. Prepare salinity hazard maps showing the likely affected areas and time frame when salinity may develop. Use groundwater models to undertake ‘what if” management options. 6. Review water use and drainage systems in the town site for evidence of excessive recharge. 7. Develop low recharge farming systems for arable land 8. Airborne survey (magnetic and radiometric) for specific areas of the catchment to refine underground geology, delineate structures and determine depth to bedrock (thickness of regolith) and delineate soil systems for recharge mapping. 9. This information will enable the areas of high salinity risk to be better delineated and determine where the best yielding pumping bores maybe located. 10. Maintain and increase community support for water and salinity issues 11. Manage and monitor evaporation basins and desalination plant input/output and performance 12. Plan to develop a solar energy pond to generate power. Trial solar energy pond. REFERENCES Bettenay, E. and Hingston, F.J., 1964. Development and distribution of soils in the Merredin area, Western Australia. Aust. J. Soil Res. 2:73-186. George, R.J. and Frantom, P.W.C. 1990 Preliminary groundwater and salinity investigations in the eastern Wheatbelt. 2. Merredin Catchment. Division of Resource Management, Technical Report No 89, 68 pp. George, R. J., Nulsen, R.A., Ferdowsian, R. and Raper, G.P. 1999. Interactions between trees and groundwaters in recharge and discharge areas – A survey of Western Australian sites. Agricultural Water Management, 39:91-113. Matta, J. 2000. The Rural Towns Program Groundwater Modelling: The Merredin Catchment. Resource Management Technical Manual No. 189, 31 pp.
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Foreword Dealing with Salinity in W
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1Day one: Monday 30th July. Field t
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Papers Dealing with Salinity in Whe
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Ali and Coles biggest challenges fa
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Ali and Coles erosion, maintenance
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Ali and Coles expected under these
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Ali and Coles Coles, N.A. & Ali, M.
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Commander, Schoknecht, Verboom and
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APPRECIATING AND CREATING OUR HISTO
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services. The Government responded
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WHEATBELT VALLEYS IN DIFFICULTIES T
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argue that they were really abnorma
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1990s, the wheatbelt valleys in par
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REFERENCES Agstats (1997). Agricult
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George and Coleman two to four fold
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George and Coleman surface, the vas
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George and Coleman for example in t
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George and Coleman current trends c
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George and Coleman While not as div
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George and Coleman SPECIES Table 5:
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George and Coleman advantages of so
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George and Coleman this volume). In
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George and Coleman Venture Economy
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George and Coleman Lawrence, C. (19
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Hatton and Ruprecht WATCHING THE RI
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Since the mid 1970s annual rainfall
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Effect of clearing on runoff The ot
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Salinity Monthly streamflow (ML) 10
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The ratio of the salt outputs to in
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- 11 - Hatton and Ruprecht Table 4:
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THE FUTURE In looking at the future
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McFarlane, D.J., George, R.J. & Far
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Keighery, Halse and McKenzie Terres
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Keighery, Halse and McKenzie Wetlan
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Keighery, Halse and McKenzie specie
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Keighery, Halse and McKenzie enviro
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Lloyd number of legal cases pending
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Lloyd 0 -500 -1000 -1500 -2000 -250
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Lloyd Table 3. Sheep grazing days i
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Lloyd Hectares project to provide w
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INTRODUCTION The Lake Chinocup Catc
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agriculture) in various stages, the
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- 3,477 ha of remnant vegetation or
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Scientists talk of up to 30% of the
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6320000 6300000 6280000 6260000 624
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Although the waterlogged area under
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eliminates drainage through the nex
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REFERENCES Dawes, W.R., Stauffacher
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Pannell ECONOMICS, SOCIETY AND ENVI
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Pannell • the area of land protec
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Pannell Proposals to construct majo
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Pannell been conducted for the Cent
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Pannell investments in long-term la
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Pannell Pannell, D.J. (2001). Dryla
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Porter, Bartle and Cooper Table 1:
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Porter, Bartle and Cooper operation
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Porter, Bartle and Cooper Increase
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Porter, Bartle and Cooper support i
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Porter, Bartle and Cooper that is a
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CASE STUDY - TOOLIBIN LAKE AND CATC
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• The distribution, storage and m
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Secondly, there is a set of practic
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within three categories: relationsh
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CONCLUSIONS Actions to protect and
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FIELD TOUR LOCATIONS FIELD TOUR NOT
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COLES FARM “Avon River Basin Over
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Conference Outcomes Dealing with Sa
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with Salinity in Wheatbelt Valleys:
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Page 197 and 198: Photo Gallery 2 Dealing with Salini
Page 199 and 200: APPENDIX 1 BACKGROUND HYDROLOGY AND
Page 201 and 202: WHEATBELT HYDROLOGY Flow in the Yil
Page 203 and 204: Flow (ML) STREAM SALINITY Salt Rive
Page 205 and 206: APPENDIX 2 WATER MANAGEMENT OPTIONS
Page 207 and 208: APPENDIX 3 MANAGING WATER AND SALIN
Page 209 and 210: SUMMARY- TIMELINE OF RECENT SIGNIFI
Page 211 and 212: RECENT HISTORY OF WATER AND SALINIT
Page 213 and 214: Figure 1. Hydrological cross-sectio
Page 215: Depth (m) 316 315 314 313 312 311 M
Page 220 and 221: FURTHER INVESTIGATIONS AND MANAGEME
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