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Estuaries in NSW

Botany Bay

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
Alexandra Canal Tidal 09/05/00 Botany Bay
Fully tidal canal all the way to Sheas Creek
Mangrove 24/07/00 Botany Bay 330253E 6244100N (56) 12.33
Right bank six mangroves above rock wall, 350m upstream from Cooks River
Sheas Creek Tidal 09/05/00 Botany Bay 332828E 6246365N (56) 15.82
Tide would get to a point 100m downstream from Huntley Road bridge
Mangrove 24/07/00 Botany Bay
Above mangrove limit
Cooks River Tidal 7-8/5/00 Botany Bay 323388E 6247165N (56) 21.92
Tide would get to within 200m of Punchbowl Road bridge
Mangrove 24/07/00 Botany Bay 324393E 6246980N (56) 20.73
Small mangroves on right bank, 120m downstream from Burwood Road bridge
Wolli Creek Tidal 7-8/5/00 Botany Bay 327498E 6243865N (56) 15.52
Tide would get to vicinity of Bardwell Creek, 600m upstream from weir
Mangrove 24/07/00 Botany Bay 327933E 6244140N (56) 14.73
Small mangrove on right bank, 80m downstream from footbridge near weir
Muddy Creek Tidal 7-8/5/00 Botany Bay 328313E 6240975N (56) 12.92
Tide would get to vicinity of small bridge, 380m down from Princes Highway
Mangrove 24/07/00 Botany Bay 329303E 6241805N (56) 11.63
Left bank 4m downstream from Bestic Street bridge