Toowoomba 100K map tile Groundwater Dependent Ecosystems (GDEs)
Mapsheet number 9242
Version 1.5
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Surface expression GDE (points)

Known GDE

KEARNEYS SPRING
Surface ecosystems dependent on the surface expression of groundwater
Permeable rocks (rocks with predominantly primary porosity)
Fresh riverine and palustrine spring wetlands in active watercourses with semi-permanent groundwater connectivity to local and regional groundwater flow systems (spring type 3)

LEIGH SPRING
Surface ecosystems dependent on the surface expression of groundwater
Permeable rocks (rocks with predominantly primary porosity)
Fresh riverine and palustrine spring wetlands in active watercourses with semi-permanent groundwater connectivity to local and regional groundwater flow systems (spring type 3)

STONE SPRING
Surface ecosystems dependent on the surface expression of groundwater
Permeable rocks (rocks with predominantly primary porosity)
Fresh riverine and palustrine spring wetlands in active watercourses with semi-permanent groundwater connectivity to local and regional groundwater flow systems (spring type 3)

SPRINGSIDE

JIMNA SPRINGS

WILLOWS SPRING
Riverine spring wetlands in active watercourses with permanent to semi-permanent groundwater connectivity to local groundwater flow systems (spring type 4)

WELLCAMP SPRING

SPRING CREEK
Riverine spring wetlands in active watercourses with permanent to semi-permanent groundwater connectivity to local groundwater flow systems (spring type 4)

SPRING CREEK SOUTH
Riverine spring wetlands in active watercourses with permanent to semi-permanent groundwater connectivity to local groundwater flow systems (spring type 4)

WESTBROOK CREEK

EUSTONDALE SPRING

Derived GDE - moderate confidence

Surface expression GDE (lines)

Derived GDE - high confidence

Ecosystems intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia supported by groundwater flow from geologically stratified, fractured basalt aquifers in high rainfall areas (eMDB_RS_01H)
Channels intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia supported by groundwater flow from geologically stratified, fractured basalt aquifers
Alluvia supported by groundwater flow from basalt

Ecosystems intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia supported by groundwater flow from fractured rock (e.g. Texas beds) aquifers (eMDB_RS_01J)
Channels intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia supported by groundwater flow from fractured rock (e.g. Texas beds) aquifers
Alluvia supported by groundwater flow from fractured rock (e.g. Texas beds)

Ecosystems intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia supported by groundwater flow from geologically stratified, fractured basalt aquifers in low rainfall areas (eMDB_RS_01L)
Channels intermittently connected to alluvial aquifers with fresh salinity and neutral pH supported by groundwater flow from basalt aquifers
Alluvia supported by groundwater flow from basalt

Ecosystems intermittently connected to aquifers with brackish salinity and neutral pH in unconsolidated Quaternary alluvia supported by groundwater flow from geologically stratified, fractured basalt aquifers in low rainfall areas (eMDB_RS_01M)
Channels intermittently connected to alluvial aquifers with brackish salinity and neutral pH supported by groundwater flow from basalt aquifers
Alluvia supported by groundwater flow from basalt

Alluvial aquifers with near-permanent flow - SEQ (SEQ_RS_21)
Channels on alluvia with near-permanent flow

Alluvial aquifers with saline, intermittent flow - SEQ (SEQ_RS_24)
Channels on alluvia with saline, intermittent flow

High rainfall permeable geologies (basalts) - WBB (WBB_RS_09)
Channels on or extending up to 1 kilometre from permeable basalts with high rainfall

Low rainfall &/or low capacity permeable rocks (basalts) - SEQ (SEQ_RS_03)
Channels on or extending up to 100 metres from low rainfall &/or low capacity basalt

Ecosystems intermittently connected to aquifers with fresh salinity in unconsolidated Quaternary alluvia associated with catchment constrictions (eMDB_RS_02A)
Channels intermittently connected to alluvial aquifers with fresh salinity associated with catchment constrictions

Ecosystems intermittently connected to aquifers with brackish salinity in unconsolidated Quaternary alluvia associated with catchment constrictions (eMDB_RS_02B)
Channels intermittently connected to alluvial aquifers with brackish salinity associated with catchment constrictions

Ecosystems intermittently connected to aquifers with fresh salinity in geologically stratified permeable rock (basalt) in high rainfall areas (eMDB_RS_06A)
Channels intermittently connected to basalt aquifers with fresh salinity in high rainfall areas lower than 750 metres in elevation

Ecosystems intermittently connected to aquifers with fresh salinity in permeable rock (basalt) in low rainfall areas (eMDB_RS_06B)
Channels intermittently connected to basalt aquifers with fresh salinity in low rainfall areas

Derived GDE - low confidence

Sedimentary rocks with saline flow - SEQ (SEQ_RS_06a)
Channels excluding uppermost tributaries on sedimentary rocks with saline flow

Ecosystems intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia in the Condamine River drainage basin sub-area (eMDB_RS_01S)
Channels intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia in the Condamine River drainage basin sub-area

Ecosystems intermittently connected to aquifers with brackish salinity and neutral pH in unconsolidated Quaternary alluvia in the Condamine River drainage basin sub-area (eMDB_RS_01U)
Channels intermittently connected to aquifers with brackish salinity and neutral pH in unconsolidated Quaternary alluvia in the Condamine River drainage basin sub-area

Ecosystems intermittently connected to aquifers with fresh salinity in relatively heterogeneous consolidated sedimentary rock (eMDB_RS_05B)
Channels intermittently connected to aquifers with fresh salinity in relatively heterogeneous consolidated sedimentary rock
Consolidated sedimentary rocks (e.g. Kumbarilla beds, Mooga Sandstone)

Ecosystems intermittently connected to aquifers with fresh salinity in fractured rock (e.g. Texas beds) (eMDB_RS_08A)
Second order channels intermittently connected to metamorphic rock aquifers with fresh salinity

Surface expression GDE (areas)

81-100% GDE, known GDE

81-100% GDE, derived GDE - high confidence

Ecosystems intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia supported by groundwater flow from fractured rock (e.g. Texas beds) aquifers (eMDB_RS_01J)
Lacustrine wetlands, palustrine wetlands, and riverine waterbodies intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia supported by groundwater flow from fractured rock (e.g. Texas beds) aquifers
Alluvia supported by groundwater flow from fractured rock (e.g. Texas beds)

Ecosystems intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia supported by groundwater flow from geologically stratified, fractured basalt aquifers in low rainfall areas (eMDB_RS_01L)
Lacustrine wetlands, palustrine wetlands, and riverine waterbodies intermittently connected to alluvial aquifers with fresh salinity and neutral pH supported by groundwater flow from basalt aquifers

81-100% GDE, derived GDE - moderate confidence

81-100% GDE, derived GDE - low confidence

Ecosystems intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia in the Condamine River drainage basin sub-area (eMDB_RS_01S)
Lacustrine and palustrine wetlands intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia in the Condamine River drainage basin sub-area

Ecosystems intermittently connected to aquifers with fresh salinity in permeable rock (basalt) in low rainfall areas (eMDB_RS_06B)
Lacustrine and palustrine wetlands intermittently connected to basalt aquifers with fresh salinity in low rainfall areas

01-80% GDE, derived GDE - high confidence

01-80% GDE, derived GDE - moderate confidence

01-80% GDE, derived GDE - low confidence

Terrestrial GDE

Ecosystems intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia supported by groundwater flow from fractured rock (e.g. Texas beds) aquifers (eMDB_RS_01J)
Deep rooted regional ecosystems intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia supported by groundwater flow from fractured rock (e.g. Texas beds) aquifers
Biodiversity status of pre-clearing and remnant regional ecosystems v10.0
Surface ecosystems dependent on the sub-surface presence of groundwater
Alluvia supported by groundwater flow from fractured rock (e.g. Texas beds)

Riverine wetlands intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia supported by groundwater flow from fractured rock (e.g. Texas beds) aquifers
Surface ecosystems dependent on the sub-surface presence of groundwater

Ecosystems intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia supported by groundwater flow from geologically stratified, fractured basalt aquifers in low rainfall areas (eMDB_RS_01L)
Deep rooted regional ecosystems intermittently connected to alluvial aquifers with fresh salinity and neutral pH supported by groundwater flow from basalt aquifers
Biodiversity status of pre-clearing and remnant regional ecosystems v10.0
Surface ecosystems dependent on the sub-surface presence of groundwater

Riverine wetlands intermittently connected to alluvial aquifers with fresh salinity and neutral pH supported by groundwater flow from basalt aquifers

Ecosystems intermittently connected to aquifers with brackish salinity and neutral pH in unconsolidated Quaternary alluvia supported by groundwater flow from geologically stratified, fractured basalt aquifers in low rainfall areas (eMDB_RS_01M)
Deep rooted regional ecosystems intermittently connected to alluvial aquifers with brackish salinity and neutral pH supported by groundwater flow from basalt aquifers
Biodiversity status of pre-clearing and remnant regional ecosystems v10.0

Ecosystems intermittently connected to aquifers with brackish salinity and neutral pH in unconsolidated Quaternary alluvia supported by groundwater flow from geologically stratified, fractured basalt aquifers in low rainfall areas (eMDB_RS_01M)
Riverine wetlands intermittently connected to alluvial aquifers with brackish salinity and neutral pH supported by groundwater flow from basalt aquifers

Ecosystems intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia in the Condamine River drainage basin sub-area (eMDB_RS_01S)
Regional ecosystems dominated by Eucalyptus camaldulensis (river red gum), Eucalyptus intertexta (gum coolibah), and/or Corymbia tessellaris (Moreton Bay Ash) intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quate

Alluvial aquifers with near-permanent flow - SEQ (SEQ_RS_21)
Treed regional ecosystems on alluvia with near-permanent flow
81-100 Derived GDE - Moderate Confidence

Alluvial aquifers with saline, intermittent flow - SEQ (SEQ_RS_24)
Treed regional ecosystems and riverine wetlands on alluvia with saline, intermittent flow
81-100 Derived GDE - Moderate Confidence

Low rainfall &/or low capacity permeable rocks (basalts) - SEQ (SEQ_RS_03)
Mesic ecosystems on low rainfall &/or low capacity basalt, or treed regional ecosystems and riverine wetlands fringing streams on low rainfall &/or low capacity basalt,associated colluvium or within basalt contact zone
81-100 Derived GDE - Moderate Confidence

Ecosystems intermittently connected to aquifers with fresh salinity in unconsolidated Quaternary alluvia associated with catchment constrictions (eMDB_RS_02A)
Deep rooted regional ecosystems intermittently connected to alluvial aquifers with fresh salinity associated with catchment constrictions

Ecosystems intermittently connected to aquifers with brackish salinity in unconsolidated Quaternary alluvia associated with catchment constrictions (eMDB_RS_02B)
Deep rooted regional ecosystems intermittently connected to alluvial aquifers with brackish salinity associated with catchment constrictions

Ecosystems intermittently connected to aquifers with brackish salinity in unconsolidated Quaternary alluvia associated with catchment constrictions (eMDB_RS_02B)
Riverine wetlands intermittently connected to alluvial aquifers with brackish salinity associated with catchment constrictions

Ecosystems intermittently connected to aquifers with brackish salinity in sandy plains (eMDB_RS_03A)
Deep rooted regional ecosystems intermittently connected to aquifers with brackish salinity in sandy plains where depth to groundwater is estimated to be 30 metres or less

Ecosystems intermittently connected to aquifers with fresh salinity in geologically stratified permeable rock (basalt) in high rainfall areas (eMDB_RS_06A)
Deep rooted regional ecosystems within 50 metres of the edge of basalt plains and hills and intermittently connected to basalt aquifers with fresh salinity in high rainfall areas

Ecosystems intermittently connected to aquifers with fresh salinity in permeable rock (basalt) in low rainfall areas (eMDB_RS_06B)
Deep rooted regional ecosystems within 50 metres of a channel and intermittently connected to basalt aquifers with fresh salinity in low rainfall areas

Deep rooted regional ecosystems withint 50 metres of the edge of basalt plains and hills and intermittently connected to basalt aquifers with fresh salinity in low rainfall areas

Riverine wetlands withint 50 metres of the edge of basalt plains and hills and intermittently connected to basalt aquifers with fresh salinity in low rainfall areas

Sedimentary rocks with saline flow - SEQ (SEQ_RS_06a)
Treed regional ecosystems and riverine wetlands fringing channels on sedimentary rocks with saline flow

Deep rooted regional ecosystems intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia in the Condamine River drainage basin sub-area

Riverine wetlands intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia in the Condamine River drainage basin sub-area

Ecosystems intermittently connected to aquifers with brackish salinity in sandy plains (eMDB_RS_03A)
Deep rooted regional ecosystems intermittently connected to aquifers with brackish salinity in sandy plains where depth to groundwater is estimated to be greater than 30 metres

Ecosystems intermittently connected to aquifers with fresh salinity in relatively heterogeneous consolidated sedimentary rock (eMDB_RS_05B)
Deep rooted regional ecosystems within 50 metres of a channel and intermittently connected to aquifers with fresh salinity in relatively heterogeneous consolidated sedimentary rock
Consolidated sedimentary rocks (e.g. Kumbarilla beds, Mooga Sandstone)

Ecosystems intermittently connected to aquifers with fresh salinity in fractured rock (e.g. Texas beds) (eMDB_RS_08A)
Deep rooted regional ecosystems within 50 metres of a channel intermittently connected to metamorphic rock aquifers with fresh salinity

Ecosystems intermittently connected to aquifers with fresh salinity in unconsolidated Quaternary alluvia associated with catchment constrictions (eMDB_RS_02A)
Riverine wetlands intermittently connected to alluvial aquifers with fresh salinity associated with catchment constrictions

Subterranean GDE (caves)

Derived GDE - unknown confidence

Potential GDE aquifer

Unconsolidated sedimentary aquifers

Alluvial aquifers with near-permanent flow (SEQ_RS_21)

Alluvial aquifers with saline, intermittent flow (SEQ_RS_24)

Ecosystems intermittently connected to aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia supported by groundwater flow from geologically stratified, fractured basalt aquifers in high rainfall areas (eMDB_RS_01H)

Ecosystems intermittently connected to perched aquifers with fresh salinity and neutral pH in unconsolidated Quaternary alluvia in the Condamine River drainage basin sub-area (eMDB_RS_01T)

Ecosystems intermittently connected to aquifers with brackish salinity and neutral pH in unconsolidated Quaternary alluvia in the Condamine River drainage basin sub-area (eMDB_RS_01U)

Ecosystems intermittently connected to perched aquifers with brackish salinity and neutral pH in unconsolidated Quaternary alluvia in the Condamine River drainage basin sub-area (eMDB_RS_01V)

Ecosystems intermittently connected to aquifers with brackish salinity in sandy plains (eMDB_RS_03A)

Consolidated sedimentary aquifers

Sedimentary rocks with saline flow (SEQ_RS_06a)

Ecosystems intermittently connected to aquifers with fresh salinity in relatively heterogeneous consolidated sedimentary rock (eMDB_RS_05B)
Biodiversity status of pre-clearing and remnant regional ecosystems v10.0; Detailed Surface Geology 2015; Geology 250K
Consolidated sedimentary rocks (e.g. Kumbarilla beds, Mooga Sandstone)

Igneous rock aquifers

Low rainfall &/or low capacity permeable rocks (basalts) (SEQ_RS_03)

Ecosystems intermittently connected to aquifers with fresh salinity in geologically stratified permeable rock (basalt) in high rainfall areas (eMDB_RS_06A)

Metamorphic rock aquifers

Ecosystems intermittently connected to aquifers with fresh salinity in fractured rock (e.g. Texas beds) (eMDB_RS_08A)

Mixture of consolidated sedimentary, igneous and

or metamorphic rock aquifers

No identified aquifers