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Groundwater Review of South East Queensland On-Shore
Sandmass Systems & Sand Islands
Client: Queensland Department of Natural Resources & Mines |
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Description: As part of the second
stage of the South East Queensland Regional Water Supply
Strategy (SEQRWSS) EHA was retained by NR&M to
undertake reviews of the water resources of the coastal
sand islands of South east Queensland (including Bribie,
Moreton, North Stradbroke and South Stradbroke Islands),
the Cooloola-Teewah Sandmass; and all coastal on-shore
sandmass systems from Mary and Noosa Rivers to the
New South Wales border. The review work has involved
collation and review of information pertaining to existing
water resource development, existing plans for expansion
of water resource development, existing hydrological
and environmental monitoring programs, available geological,
hydrological and hydrologically-related environmental
literature, climatic data, the state of knowledge of
geological and hydrological data, groundwater quality,
aquifer performance, groundwater dependent ecosystems
and groundwater supported features, and recommendations
for
replacement and required additional groundwater and
surface water monitoring facilities (including costing).
The reporting also dealt with existing and potential
constraints to existing and additional water resource
development, risk assessments and possible solutions
for additional development, future extraction patterns
and possible reasonable additional water resource development
scenarios to increase water extraction, including extraction
point locations, routes for major pipelines and lead
times. In addition to this work the project also included
identification of opportunities for artificial recharge
schemes and the identification, costing and scheduling
of required works to produce numerical hydrological
models for key aquifers. Preliminary groundwater modelling
was undertaken for Moreton Island and a series of groundwater
model assessments of North Stradbroke Island have been
completed.
Location: South East Queensland,
Australia |
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Revision & Modification of SPLASH Model Code
Client: Queensland Department of Natural Resources
and Mines (NR&M) |
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Description: EHA was retained by
NR&M to peer review a NR&M report (“Report
on an analysis on the performance, operation and optimisation
of the SPLASH v1 program”) and provide expert
advice pertaining to modifications to the SPLASH code.
SPLASH—(Soil, PLAnt, Salinity and recHarge Model)
is a lumped parameter model developed by Jerome Arunakumaren
for the simulation of temporal behaviour of moisture
in the plant root zone and in the unsaturated zone
below the root zone. SPLASH produces simulated time
series of consumptive use, irrigation demand, runoff
from the soil surface, aquifer recharge and salinity
concentrations of the root zone and recharge water.
SPLASH can be run to simulate farm-scale behaviour
or to simulate demand patterns on the regional scale
where individual usage characteristics are ‘smoothed
out’. SPLASH consists of three ‘stores’;
a lower store which represents the unsaturated zone
between the base of the root zone and the aquifer,
and two upper stores separated by a sliding interface
which represents growth of the root zone as the crop
matures. SPLASH is a dynamically layered, unsaturated
zone, water balanced model which simulates water and
solute movement in the soil.
Location: Queensland, Australia
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