Mangrove Cove

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Delta Mangrove Cove Management Plan 5.2.1 Climate, geology and soils The climate on the Northern Adelaide Plains is described as Mediterranean, with cold, wet winters and hot dry summers. The nearest, and most similar, weather station is located in the extratidal areas at the Dry Creek Saltfields. The Dry Creek Saltfields’ weather station records an average of 420 mm of rain annually. This rainfall mainly occurs between May and September. Strong south-westerly winds regularly occur during autumn and spring, with hot northerly winds often occurring during summer. In winter a light northerly breeze blows in the early mornings. Lightning storms occasionally occur through out the year, but with higher intensity in mid to late spring. Table 1 - Weather details Annual Weather Aspect Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Total Daily Average Av Monthly Rain (56 years)(mm) 19.3 20.8 20.7 36.9 53.9 52.7 57.1 48.7 22.6 40.4 23.7 23.6 420.4 Av Daily Maximum Temp (10 yrs) ( o C) 26.0 27.8 26.1 21.6 18.5 15.6 14.5 15.5 17.9 20.9 23.6 25.6 21.1 Av Daily Minimum Temp (10 yrs)( o C) 15.9 15.6 15.0 11.8 9.6 8.4 7.1 7.6 8.9 11.1 13.2 15.0 11.6 Av Daily Vapour Pressure (10 yrs) (mm Hg) 12.0 11.3 10.7 9.7 9.1 8.4 7.9 8.1 8.6 8.9 10.1 11.2 9.7 Av Daily Wind Speed (7 yrs) km/hr 5.7 4.3 4.0 3.5 3.4 4.1 4.4 4.7 5.6 5.7 5.1 5.3 4.6 Av Monthly Gross Evap. (56 yrs) (mm) 302 217 217 133 82 56 56 76 109 164.9 274 273 1960 Av Monthly Nett Evap. (56 yrs) (mm) 283 197 196 97 28 3 -1 27 86 125 250 2500 1539 According to the Soil Association Map of the Adelaide Region (Taylor, 1989) the underlying soils in the area are historic estuarine muds and sands (layered sediments, being sands, silts, clays and organic deposits of mixed marine and river origins) that form part of the Port River estuary. 5.2.1.1 Evolution of the landscape The Port River was quite narrow in its upper reaches and was edged with swamplands and mangroves when Europeans first settled the area. Most land to the east and west of the river was originally intertidal swamp, mudflats, small dunes (berms) and chenier ridges, which have been raised and levelled with hydraulic fill or industrial dumping. Early diagram books and field survey books at the Lands Titles Office show that much of the area south of the current Jervois Bridge has been earmarked for reclamation at one stage or another in the period between 1856 and the present. The southern area of Mangrove Cove is one of the few areas along the inner Port that remains at natural surface level. This may be because it was the location of a small creek that once drained Section 914 (west of the railway). It was also useful as a drainage aid for any hydraulic filling that occurred on the northerly parts of the site. LMC-MCR-001-PC/RE Page 13
Delta Mangrove Cove Management Plan Figure 3 - Early diagrams of the site (Field survey book 130 p 80, Diagram book p 20, Harbour Drawing DR388) The diagram book for the Hundred of Port Adelaide page 20 shows clearly the shape of the river and what we now call Mangrove Cove at the location referred to then as Harbours Board Reserve 17 (gazetted 1879). The creek that ran into the small cove meandered to the reserve and the river through sections 913, 914 and 911, according to the survey drawings in Field Book 130 page 80. Two of these blocks (911 & 914) were directly adjacent to the reserve and were, according to surveyor Michael O’Reilly in notes on page 20 of the Port Adelaide diagram book, ‘swamp subject to tidal inundation’ while the last block traversed by the creek (913), further south contained ‘sandy pasture,’ possibly a small sandy ridge similar to those noted nearby by the Quaker James Backhouse in 1837. LMC-MCR-001-PC/RE Page 14
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Page 52 and 53: Appendices Aims and strategies tabl
Page 54 and 55: MANAGEMENT ISSUE Cultural values Th
Page 56 and 57: Flora collection permit
Page 58 and 59: Additional Condtions: GENERAL FLORA
Page 60 and 61: Mangrove Cove field data Permit: A2
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Delta Mangrove Cove Management Plan
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the Tandanja ruwe by way of Medaind
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(Phalacrocorax carbo) totem at the
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Janaleitj? (How far away?) Nitj tei
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FITZJAMES - possibly Jervois Basin
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FIDES - Jervois Basin The four-mast
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UNIDENTIFIED WOODEN PONTOON - Jervo
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Remediating seagrass beds The origi
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Prior to attempting any remediation
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Active management of mangrove expan
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only slowly diffuse away. The chang
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Preliminary suggestions for constru
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The area flooded only every few day
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Mangrove Park Management Plan This
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Cultural Kaurna significance • Th
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Mangrove Cove

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