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Estuaries in NSW

Lake Macquarie


Tidal and Mangrove Limits

This pages show a summary of Tidal and Mangrove Limits for this estuary that has been collected under the Estuary Management Program, in conjunction with Manly Hydraulics Laboratory.

Methodology - Short Description

A full description of the reasoning and methodology of obtaining this data is available in the original report by Manly Hydraulics Laboratory MHL-Report 1286. A shortened version without the extensive tables of limits is available here (This file is 3.6Mbytes in size).

The Tidal Limit is defined as the maximum upstream location that a tidal variation in water level is observed. Using water level recorders, this point was determined for predicted ocean tide high water greater then 1.8m ISLW and no significant fresh water inflow into the estuary. Only waterways with a tidal extent greater then 2km were surveyed.

The Mangrove Limit was defined and surveyed as the most upstream location of a growing mangrove.

Explanation of Table Entries

  • Branch - Branch or tributary name
  • Limit - Tidal or mangrove limit
  • Date - Date or period that data was collected
  • Map - Map name of the 1:25000 NSW topographic map
  • Location - Map MGA coordinate of "Easting Northing (Zone)" in metres
  • Distance - Distance in kilometres upstream of estuary entrance
  • Comment - Description of the location or why there is no limit
 
Branch Limit Date Map Location Distance
Comment
Winding Creek Tidal 27/10/99 Wallsend 372624E 6355709N (56) 22.3
Weir 100m upstream from Frederick Street bridge

Mangrove 372604E 6355709N (56) 22.3
Right bank 20m downstream from weir

Brush Creek Tidal 27/10/99 Wallsend 372274E 6356074N (56) 21.9
Not tidal at culverts on Main Road

Mangrove 372134E 6355979N (56) 21.7
Left bank 200m downstream from Main Road

Cocked Hat Creek Tidal 27/10/99 Wallsend 370969E 6355999N (56) 21.2
At footbridge, 225m downstream from Main Road

Mangrove 370989E 6355944N (56) 21.1
50m downstream from footbridge

Cockle Creek Tidal 27/10/99 Wallsend 369019E 6354814N (56) 24
Weir on James Street / Weir Road

Mangrove 369034E 6354829N (56) 24
Both banks downstream from weir

Marmong Creek Tidal 09/09/02 Wallsend 370339E 6350189N (56) 16.2
Small range above weir would disperse in this vicinity 450m upstream from Marmong Street

Mangrove 370759E 6350154N (56) 15.8
Mangroves 8m high upstream side of weir 50m upstream from Marmong Street

L. T. Creek (North) Tidal 24/11/99 Wallsend 367654E 6349489N (56) 15.7
Tide gets to culverts on Fassifern Road

Mangrove 367704E 6349494N (56) 15.6
50m downstream from Fassifern Road crossing culverts

L. T. Creek (South) Tidal 24/11/99 Wallsend 367619E 6349269N (56) 15.7
Tide gets to downstream side of disused Toronto-Fassifern railway bridge

Mangrove 367594E 6349309N (56) 15.6
40m downstream from disused Toronto-Fassifern railway bridge

Mudd Creek Tidal 6-8/6/00 Swansea 367429E 6347139N (56) 16.3
Joined to Stony Creek by culverts, tide gets within 10m of STW embankment

Mangrove
Mangroves along entire length - culverts join Mudd Creek to Stony Creek

Stony Creek Tidal 27/10/99 Swansea 366414E 6347759N (56) 18
460m upstream from old causeway at end of High Street

Mangrove 366654E 6347779N (56) 17.7
Right bank 120m downstream from ford off High Street

Kilaben Creek Tidal 27/10/99 Swansea 366104E 6344194N (56) 13
Would be tidal for a very short distance upstream from Stockyard Creek

Mangrove 366104E 6344194N (56) 13
10m upstream from Stockyard Creek

Stockyard Creek Tidal 27/10/99 Swansea 366114E 6344154N (56) 13
Tide would get to dam on golf course, 30m upstream from Kilaben Creek

Mangrove 366114E 6344154N (56) 13
No mangroves upstream from dam on golf course

Crooked Creek Tidal 16/12/01 Swansea 364424E 6341019N (56) 15.2
Heavy grass growth would stop tide 50m upstream from road culverts

Mangrove 364409E 6340819N (56) 15
Both banks 10m high, 110m downstream from road

Whiteheads Lagoon Tidal 16/12/01 Swansea 363624E 6341029N (56) 15.8
Heavy reed growth would stop tide 75m upstream from road culverts

Mangrove 363649E 6341004N (56) 15.8
Both banks 5m high, 40m upstream from road

Jigadee Creek Tidal 27-28/11/99 Morisset 356729E 6339294N (56) 25.9
950m downstream from Newport Road

Mangrove 356694E 6338349N (56) 24.2
1.0km upstream from Dora Creek

Dora Creek Tidal 27-28/11/99 Morisset 355429E 6339060N (56) 26.5
Weir 10m downstream from Freemans Drive

Mangrove 355674E 6337830N (56) 25.1
1.4km downstream from Freemans Drive

Stockton Creek Tidal 24-25/11/99 Morisset 356129E 6335625N (56) 26.4
Heavy reed growth, 325m upstream from bridge on Freeway

Mangrove 356784E 6336490N (56) 24.9
1.0km downstream from bridge on Freeway

Pourmalong Creek Tidal 24/11/99 Morisset 359844E 6334944N (56) 23
300m downstream from bridge on road to Morisset Psychiatric Hospital

Mangrove 360809E 6334844N (56) 21.3
1.8km downstream from bridge on road to Morisset Hospital

Wyee Creek Tidal 23-24/11/99 Dooralong 359814E 6329309N (56) 25
Heavy reed growth, 1.2km downstream from Summerhayes Road

Mangrove 360184E 6330064N (56) 24
2.1km downstream from Summerhayes Road

Mannering Bay Tidal 23/11/99 Catherine Hill Bay 362349E 6328979N (56) 21.9
Would be tidal up to spillway from Mannering Lake

Mangrove 362349E 6328979N (56) 21.9
On downstream side of spillway from Mannering Lake

Karignan Creek Tidal 23-24/11/99 Catherine Hill Bay 367004E 6327854N (56) 22.6
Weir 1.1km upstream from Chain Valley Bay

Mangrove 366734E 6327944N (56) 22.2
750m upstream from Chain Valley Bay

Tiembula Creek Tidal 17/12/01 Catherine Hill Bay 367429E 6330209N (56) 21
Reed growth in creek would stop tide, 850m upstream from Chain Valley Bay

Mangrove 367374E 6330264N (56) 20.9
Left bank 1m high, 750m upstream from Chain Valley Bay

Mangrove Gully Tidal 17/12/01 Catherine Hill Bay 369104E 6329634N (56) 16.9
Large rise in creek then heavy reed growth, 325m upstream from Crangan Bay

Mangrove 369089E 6329649N (56) 16.9
310m upstream from Crangan Bay

Black Neds Bay Tidal 16/12/01 Swansea
Fully tidal bay with no significant creeks entering

Mangrove 374084E 6337899N (56) 4.5
Mangroves extend to foredune fronting Salts Bay