Note: this dataset description is metadata (data about data) which describes the actual dataset in accordance with the ANZLIC (Australia New Zealand Land Information Council) Core Metadata Guidelines Version 2 (February 2001)
ANZLIC unique identifier: ANZNS0281000003
Title: Assessment of Acid Sulphate Soil Drainage into Cudgen Lake, NSW, 1993 - Preliminary Investigation
Custodian: Environment Protection Authority NSW
Jurisdiction: New South Wales
Cudgen Lake in northern NSW has a history of low pH levels in its water and additionally extensive fish and prawn kills have been observed. This small investigation aims to improve our understanding of the management of coastal lands for acid sulphate soil problems. Preliminary water quality assessments were made in conjunction with hydrological data trace metal analyses, and chloride/sulphate ratios. The EPA collected water quality data in conjunction with the Public Works Dept (PWD). The PWD had several water quality monitoring stations set up in Cudgen Lake to gauge water flow, rainfall and tidal gauging. Results of this study showed extreme acidity with the catchment and very low pH in Cudgen Lake. The water in the lake was typically clear due to dissociated aluminium ions, while the sediments in shallow areas displayed orange precipitation derived from iron sulphide.
- ECOLOGY
- SOIL Mapping
- WATER Quality
- WATER Quality Monitoring
- Geographic extent name:
- CUDGEN - 25K Map Series - New South Wales
- Geographic extent polygon:
- 153.5 -28.25, 153.75 -28.25, 153.75 -28.375, 153.5 -28.375, 153.5 -28.25
Note: The format for each Geographic extent name is: Name - Identifier - Category - Jurisdiction (as appropriate)
Geographic bounding box:
The bounding box encloses the maximum extents of the dataset. There may be voids or gaps within the bounding box, depending on the defined coverage of the dataset. Outer bounding rectangle as Latitude/Longitude coordinates based on the WGS84 datum (expressed as both Degrees Minutes Seconds and as decimal Degrees):
- North bounding latitude: 28 15 00.0 S (-28.25)
- South bounding latitude: 28 22 30.0 S (-28.375)
- East bounding longitude: 153 45 00.0 E (153.75)
- West bounding longitude: 153 30 00.0 E (153.5)
Lineage:
1 Week - Samples taken over 2 (two) days - water sampling in specific locations within Cudgen Lake and the creek that runs into Cudgen Lake
Positional accuracy:
Moderately accurate
Attribute accuracy:
Reasonably accurate
Logical consistency:
Laboratory analysis - NATA Registered
Completeness:
Reasonably complete
This dataset description complies with ANZLIC Core Metadata Guidelines Version 2 (February 2001) and XML DTD ANZMETA NSW NRIMS Page 1 v1.0 which extends ANZMETA 1.3 (metadata validation date: 2004-07-11)