Deep Creek

Physical characteristics

Latitude (ºS)-30.60
Longitude (ºE)153.01
Catchment area (km2)189.8
Estuary area (km2)1,21.7
Estuary volume (ML)31387.0
Average depth (m)41.3
Roy et al. (2001) classification5IV/8/C
Entrance condition6I/(O)
  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 prism

The volume of water moving past a fixed cross section during each flood tide or ebb tide (i.e. slack water to slack water), is referred to as the tidal prism of an estuary.

The following table shows the measured tidal prism at the location specified, along with the tidal range for near the measurement site and at Sydney Harbour.

Location:     600m upstream from the ocean on 26/4/02

Tide stateFlow
(106 m3
tidal range (m)
Sydney Harbour
tidal range (m)
Ebb flow0.220.251.67
Flood flow

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
Apr 2002Extensive data collection: water levels at five sites, velocities at one site and water quality profiles at 11 sites.1988-15.pdfMHL1182

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
54362sh1.pdfIndex, tidal planes & cross section locations1:100001153.9kb
54362sh2.pdfDeep Creek1:2000823.5kb
54362sh3.pdfDeep Creek entrance1:1000941.5kb
54362sh4.pdfDeep Creek1:1000475.4kb
54362sh5.pdfDeep Creek1:1000727.0kb
54362sh6.pdfCross sections - Deep Creek1:1000 H 1:200 V623.2kb
54362sh7.pdfCross sections - Deep Creek1:1000 H 1:200 V734.9kb
54362sh8.pdfCross sections - Cedar Creek, Cow Creek & Boggy Creek1:1000 H 1:200 V696.8kb
54362.txtDeep Creek xyz dataN/A109.8kb
Page last updated: 26 April 2012