CLM - Bore water level NSW

## **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 NSW part of the Clarence-Moreton Basin. The data were organized by geological formations. Water levels for the Clarence region of NSW were obtained from the NSW Office of Water. Additionally, nine Metgasco monitoring bores with water level records from 2004 to 2006 were merged into the collated database (Metgasco, 2007). The sign convention for water level records in NSW is opposite to that used in the DNRM database. The water level in the NSW database is represented as the depth of water below the ground surface; a positive value was used for water level below the reference point. Elevations of bores are missing for many bores. To make the converted water level more consistent, all the elevations of bores were derived from the Australian one-second DEM model.

Metgasco (2007) Casino gas project - hydrogeological assessment, M09388A01.500, Metgasco Ltd, North Sydney.

## **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

DM:  aquifer assignment for a bore sourced directly from the state database where the bore is screened to multiple aquifers

## **Dataset Citation** 

Bioregional Assessment Programme (2014) CLM - Bore water level NSW. Bioregional Assessment Derived Dataset. Viewed 28 September 2017, http://data.bioregionalassessments.gov.au/dataset/d20a15c4-b4ea-45a4-97e3-6ed83373ba97.

## **Dataset Ancestors** 

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

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

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

* **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** [Hydstra Groundwater Measurement Update - NSW Office of Water, Nov2013](https://data.gov.au/data/dataset/08b34518-c947-4665-82e5-c144b5b24e01)

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



Tags: Clarence-Moreton bioregion, geoscientificInformation
Organization: Bioregional Assessment Program