Environmental issues

Water

Smiths Lake

Physical characteristics

Entrance
location
Latitude (ºS)-32.40
Longitude (ºE)152.52
Catchment area (km2)128.0
Estuary area (km2)1,210.0
Estuary volume (ML)323552.5
Average depth (m)42.4
Roy et al. (2001) classification5IV/8/A
Entrance condition6I
Notes:
  1. Derived from DECCW (2010) NSW estuaries and coastal catchments spatial database.
  2. Includes area mapped as open water (see note 1), mangrove and saltmarsh areas (Creese R. G., Glasby T. M., West G. and Gallen C. (2009) Mapping the habitats of NSW estuaries. Industry & Investment NSW Fisheries Final Report Series 113. Port Stephens, NSW, Australia.
  3. Based on areas at 0.6 m AHD (Roper T., Creese B., Scanes P., Stephens K., Williams R., Dela-Cruz J., Coade G. and Coates B. (2011) Assessing the condition of estuaries and coastal lake ecosystems in NSW. Office of Environment and Heritage, Sydney).
  4. Estimated by dividing the total volume at 0.6 m AHD by the total surface area of the estuary including mangrove areas but excluding saltmarsh (Roper et al., 2011)
  5. Estuary group: I = oceanic embayment, II = tide dominated estuary, III = wave dominated estuary, IV = intermittently closed estuary V = freshwater bodies
    Estuary type: 1 = ocean embayments, 3 = drowned valley estuary, 5 = barrier estuary, 6 = barrier lagoon, 7 = interbarrier estuary, 8 = saline coastal lagoon, 9 = small coastal creeks, 11 = brackish barrier lake. Evolution stage: A=youthful, B=intermediate, C=semi-mature, D=mature.
    (P. S. Roy, R. J. Williams, A. R. Jones, I. Yassini, P. J. Gibbs, B. Coates, R. J. West, P. R. Scanes, J. P. Hudson and S. Nichol (2001) Structure and Function of South-east Australian Estuaries. Estuarine, Coastal and Shelf Science 53, 351-384)
  6. Entrance conditions: O = open, T = trained, I = intermittent.

Tidal survey

Tidal surveys measure the hydrodynamic behaviour of an estuary during a full tidal cycle. The parameters measured include velocity, water levels, salinity, temperature and pH.

The following tidal surveys have been undertaken on this estuary. A map shows the location and plots of the flows and water levels for the most comprehensive survey.

Copies of tidal survey reports are available from the Estuary Management Program

DateData collectedFigureReport
Nov 1995Smiths Lake Water Quality Profiles November 1995.-MHL753
May 1995 to May 1996Smiths Lake Water Quality Monitoring 1996.-MHL771

Hydrographic survey

The hydrographic survey provides the depth and physical characteristics of the estuary.

The metadata associated with the survey can be found on the map sheets provided.

Map sheet number DescriptionScale    Size
52552SH1.pdfIndex plan1:10000348.2kb
52552SH2.pdfWamwarra Bay1:2500160.5kb
52552SH3.pdfTarbuck Bay1:2500225.9kb
52552SH4.pdfSymes Bay1:2500215.2kb
52552SH5.pdfSmiths Lake (Big Island)1:2500177.2kb
52552SH6.pdfSmiths Lake (Horse Point & Simons Point)1:2500336.2kb
52552SH7.pdfSmiths Lake entrance1:2500453.6kb
52552.txtSmiths Lake xyz dataN/A223.8kb
Page last updated: 27 April 2012