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                        <gco:CharacterString>CLM - Bore water level QLD</gco:CharacterString>
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                <gco:CharacterString>## **Abstract** 

The dataset was derived by the Bioregional Assessment Programme from multiple source datasets. The source datasets are identified in the Lineage field in this metadata statement. The processes undertaken to produce this derived dataset are described in the History field in this metadata statement. 


This dataset contains the water level data for the Queensland part of the Clarence-Moreton Basin. The data were organized by geological formations. Water level data for the Queensland part of the Clarence-Moreton bioregion were obtained from the DNRM database. The 'water level' information in the database refers to the distance from the natural ground surface or reference point to the water surface in a groundwater bore. When the water level is above a reference point, it has a positive value, otherwise it is negative. No record is indicated by a zero. The 'Elevation' table records the elevation of natural ground surface around a bore or the reference point based on AHD or state datum (STD). When two elevation records for the same bore appeared, the most recent record was used. Thus, the water level represented as AHD is the sum of the water level in the 'Water level' table and the corresponding elevation in the 'Elevation' table. For the data to be deemed useful in the statistical analyses, they needed to be referenced relative to one datum. In this case, the Australian Height Datum (AHD) was used. Due to inconsistencies in data (being referenced to AHD, STD, and assumed datum (ASS)) and unknown quality and source of the elevations, the Australian one-second DEM was used for referencing all elevation data.

## **Dataset History** 

This dataset was compiled through the following process. 


1. Filter the data using the spatial extent of the Clarence-Moreton Basin;

2. Data quality check;

3. Replace the bore elevation data with the Australia 1s DEM data;

4. Computer groundwater level using the measured water depth and the bore elevation;

5. Aquifer assignment. Seven screen codes are used to indicate different bores in terms of their spatial relationship with a particular aquifer.

I: bores with screen intervals inside the aquifer

T: bores with a screen top inside the aquifer

B: bores with a screen bottom within the aquifer

E: bores with screen intervals penetrating the entire aquifer

BOI: bores with their bottom inside the aquifer although without screen information in the database

DS: aquifer assignment for a bore sourced directly from the state database where the bore is only open to a single aquifer

## **Dataset Citation** 

Bioregional Assessment Programme (2014) CLM - Bore water level QLD. Bioregional Assessment Derived Dataset. Viewed 28 September 2017, http://data.bioregionalassessments.gov.au/dataset/20c5f443-bd19-4d2b-9f96-6633244c64e5.

## **Dataset Ancestors** 

* **Derived From** [Bioregional Assessment areas v02](https://data.gov.au/data/dataset/e414b1b3-c42e-42e9-9cc4-2093054aa35f)

* **Derived From** [Natural Resource Management (NRM) Regions 2010](https://data.gov.au/data/dataset/1d54e38f-4051-4f0c-a350-c7dbd8eba65b)

* **Derived From** [Bioregional Assessment areas v03](https://data.gov.au/data/dataset/96dbf469-5463-4f4d-8fad-4214c97e5aac)

* **Derived From** [QLD Department of Natural Resources and Mines Groundwater Database Extract 20142808](https://data.gov.au/data/dataset/a5c5cbdb-1152-43f7-9533-a123027b7ce1)

* **Derived From** [Bioregional Assessment areas v01](https://data.gov.au/data/dataset/0fd0d820-30b3-451f-a126-a50040426999)

* **Derived From** [GEODATA TOPO 250K Series 3, File Geodatabase format (.gdb)](https://data.gov.au/data/dataset/96ebf889-f726-4967-9964-714fb57d679b)

* **Derived From** [GEODATA TOPO 250K Series 3](https://data.gov.au/data/dataset/a0650f18-518a-4b99-a553-44f82f28bb5f)

* **Derived From** [NSW Catchment Management Authority Boundaries   20130917](https://data.gov.au/data/dataset/0dc4272e-c081-4ed4-9645-aa336ffacd85)

* **Derived From** [Geological Provinces - Full Extent](https://data.gov.au/data/dataset/0a064b3b-2a1e-4672-80d9-03333be67aad)

* **Derived From** [Geoscience Australia, 1 second SRTM Digital Elevation Model (DEM)](https://data.gov.au/data/dataset/9a9284b6-eb45-4a13-97d0-91bf25f1187b)

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