Authors / CoAuthors
Lai, E.C.S. | Carey, H. | Cook, S.
Abstract
This data release contains accurate positional data for groundwater boreholes in terms of horizontal location as well as elevation of the top of casing protectors. Twenty-four boreholes located in the Nulla and McBride basalt provinces have had DGPS survey results compiled and are presented. Using 95% confidence intervals, the horizontal uncertainties are less than 1.2m and vertical uncertainties less than 0.9m. These results are a substantial improvement, particularly on the uncertainty of elevations, and as such allow water levels need to be compared between bores on a comparable datum, to enable a regional hydrogeological understanding. Quantifying the uncertainties in elevation data adds robustness to the analysis of water levels across the region rather than detracting from it.
Product Type
document
eCat Id
135417
Contact for the resource
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Point of contact
- Contact instructions
- MEG
Digital Object Identifier
Keywords
- theme.ANZRC Fields of Research.rdf
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- HydrogeologySurveying (incl. Hydrographic Surveying)
- ( Theme )
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- position
- ( Theme )
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- groundwater bore
- ( Place )
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- Upper Burdekin
- ( Place )
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- Nulla Basalt Province
- ( Place )
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- McBride Basalt Province
- ( Project )
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- Exploring for the Future
- ( Project )
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- EFTF
- ( Theme )
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- location
- ( Theme )
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- survey
- ( Project )
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- Upper Burdekin Groundwater Project
- ( Theme )
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- elevation
- ( Theme )
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- DGPS
- ( Theme )
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- coordinates
- ( Place )
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- North Queensland
- ( Theme )
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- RTK DGPS
- ( Theme )
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- Real-Time Kinematic Differential GPS
- ANZLIC Geographic Extent Name Register
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- QUEENSLANDBURDEKIN RIVER
-
- Published_External
Publication Date
2020-12-16T04:50:38
Creation Date
Security Constraints
Legal Constraints
Status
completed
Purpose
To release data on surveying borehole locations including their elevations (by the tops of casing protectors), and the uncertainties of these. This accurate elevation data, including quantified uncertainties, allows water levels to be reported on a common datum, Australian Height Datum. Given water level fluctuations can be on the order of millimetres or centimetres, bore heights with an elevation uncertainty of several metres are insufficient, so more accurate bore elevations are essential for comparing water levels between monitoring bores.
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
2020/049
Lineage
Real-Time Kinematic Differential GPS surveying of boreholes has been conducted in three phases. Processing these results allows positional data to be recorded in both horizontal dimensions as well as the vertical dimension. In addition, the uncertainties of these are quantified. These results are collated and presented in this data release.
Parent Information
Extents
[-20.50, -18.00, 144.00, 146.00]
Reference System
Spatial Resolution
Service Information
Associations
Downloads and Links
Source Information