The data are subject to the Queensland Department of Science, Information
Technology, Innovation and the Arts’ data use single supply licence. Please contact firstname.lastname@example.org to access data.
Data validated according to internal quality assurance procedures at the time of collection. Where the attribute result
is below the lower reporting limit, then the result is expressed as less that the lower reporting limit. Precision defines
the agreement between or among independent measurements of the
same parameter at the same location. Accuracy is the degree of agreement of a measurement with a known or true value. It
applies primarily to chemical measurements. Staff of the Environmental Monitoring and Assessment Sciences Unit within the
Queensland Department of Science Information Technology Innovation and the Arts as part of the Estuarine and Marine component
of the Moreton Bay Ecosystem Health Monitoring Program (EHMP) report the following attribute precision and reporting limit
values for their current water quality monitoring program.
Field water quality sampling and monitoring locations are generally midstream for enclosed waterways or as close to midstream
as practical when monitoring from one side of the waterway. Data validated according to internal quality assurance procedures.
The monitoring program is designed to be conducted each month under a consistent tidal condition described as a half tide
and falling, however, practical conditions may cause a variation from the designed program time.
Light penetration (Secchi depth) (metres) is measured vertically and hence this depth measurement will have a value that
will be either less than the water column depth or where the bottom may be clearly visible, will have a value expressed
as greater than the measured water column depth. In Queensland, Temperature (deg C) would normally be expected to be greater
than zero. The normal monthly program involves all measurements and samples occurring within a few minutes and not on another
day, such as the next day. Lat_GDA94 the approximate site latitude in decimal degrees to the horizontal datum GDA94 and
having negative values at these Queensland Australia sites Long_GDA94 the approximate site longitude in decimal degrees to
the horizontal datum GDA94 and having positive values at these Queensland Australia sites GDA94 stands for Geocentric Datum
of Australia 1994 (GDA94), which has the Geographical coordinate set (latitude and longitude) and is referenced to IERS
Terrestrial Reference Frame 1992 (ITRF92) and which is recommended by the International Association of Geodesy and for all
practical purposes is equivalent to the WGS84 system used by GPS defined as having Epoch of 1994.0, Ellipsoid of GRS80 (which
is the ellipsoid recommended by the International Association of Geodesy and is effectively identical to WGS84 ellipsoid),
Semi-major axis (a) of 6,378,137.0 metres and an Inverse flattening (1/f) of 298.257222101
Lineage: The current data are derived from fieldwork conducted by staff of the Environmental Monitoring and Assessment Sciences
Unit within the Queensland Department of Science Information Technology Innovation and the Arts for SEQ as part of the Estuarine
and Marine component of the Moreton Bay Ecosystem Health Monitoring Program (EHMP) and in Central Queensland as part of
the Central Queensland Ambient (CQA) Program. EHMP is an ongoing ambient monitoring program established in 1999 by the Moreton
Bay Waterways and Catchments Partnership (the Partnership) as a recommendation of the task Design and Implementation of Baseline
Monitoring (DIBM) with the role of independently assessing the management actions undertaken within the South East Queensland
Regional Water Quality Management Strategy (SEQRWQMS) which was initiated in 1993 as the Brisbane River and Moreton Bay Wastewater
Management Study (BR&MBWMS) and consistent with the National Water Quality Management Strategy (NWQMS). The NWQMS is jointly
administered by the Agriculture and Resource Management Council of Australia and New Zealand (ARMCANZ) and the Australian
and New Zealand Environment and Conservation Council (ANZECC). The National Health and Medical Research Council (NHMRC)
is involved on health matters. The NWQMS recognises that on-going management and protection of water resources is essential
for the continuing viability of most sections of our society. The NWQMS is based on the principles of the National Strategy
for Ecologically Sustainable Development. The EHMP sites in SEQ generally follow on from the Queensland Statewide Ambient
Water Quality Monitoring Program sites designed, approved and funded by the Queensland Department of Science Information Technology
Innovation and the Arts and underway from 1992. The core EHMP was functioning from February 2000 with the second phase
or expansion of EHMP from October 2002.
Field maps for the water quality monitoring program were used as guides to digitise each water quality monitoring location.
Attributes such as date, time, depth below the water surface, pH, specific conductance, dissolved oxygen, turbidity and
temperature are both recorded manually by the field staff and captured by data logger. A range of internal quality assurance
procedures cover sample collection, sample preservation, sample storage through to laboratory analysis with electronic transmission
of laboratory results to the Queensland Waterways Database with manual validation checks of the data. The majority of laboratory
analyses are conducted by the Queensland Health Scientific Services, with the laboratory analysis of chlorophyll-a being