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RESERVE DETERMINATION STUDIES FOR SELECTED SURFACE WATER, GROUNDWATER, ESTUARIES AND WETLANDS IN THE GOURITZ WMA PSC MEETING NO 1. OVERVIEW OF STUDY AREA 24 JULY 2014. 1. Study Abbreviated Name. GOURITZ RESERVE DETERMINATION STUDY ( GRDS ) GOURITZ CATCHMENT.

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OVERVIEW OF STUDY AREA 24 JULY 2014

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RESERVE DETERMINATION STUDIES FOR SELECTED SURFACE WATER, GROUNDWATER, ESTUARIES AND WETLANDS IN THE GOURITZ WMA

PSC MEETING NO 1

OVERVIEW OF STUDY AREA

24 JULY 2014

1


Study Abbreviated Name

GOURITZ RESERVE DETERMINATION STUDY (GRDS)

GOURITZ CATCHMENT


BACKGROUND TO GOURITZ CATCHMENT

  • Situated along the south coast and inland Karoo regions of the Western Cape with a surface area ± 53 000 km2

  • Comprises largely dry inland Great Karoo + Little Karoo with humid coastal belt

  • Primary drainage regions J, K1-7, H8-9: 130 quaternary catchments

  • 41% of runoff from the Gouritz River, 46% from the coastal sub-area, 13% from western area


  • Groot River (J1)

  • Gamka River (J2)

  • Olifants River (J3)

  • Western Coastal Rivers (Gouritz)

    (H8-9 and J4)

  • Eastern Coastal Rivers

    (K1-7)


  • Groot River (J1)

  • Gamka River (J2)

  • Olifants River (J3)

  • Western Coastal Rivers (Gouritz)

    (H8-9 and J4)

  • Eastern Coastal Rivers

    (K1-7)


  • Groot River (J1)

  • Gamka River (J2)

  • Olifants River (J3)

  • Western Coastal Rivers

    (H8-9 and J4)

  • Eastern Coastal Rivers

    (K1-7)


  • Groot River (J1)

  • Gamka River (J2)

  • Olifants River (J3)

  • Western Coastal Rivers (Gouritz)

    (H8-9 and J4)

  • Eastern Coastal Rivers

    (K1-7)


  • Groot River (J1)

  • Gamka River (J2)

  • Olifants River (J3)

  • Western Coastal Rivers (Gouritz)

    (H8-9 and J4)

  • Eastern Coastal Rivers

    (K1-7)


  • Groot River (J1)

  • Gamka River (J2)

  • Olifants River (J3)

  • Western Coastal Rivers

    (H8-9 and J4)

  • Eastern Coastal Rivers

    (K1-7)


Gouritz River WMA Towns

Beaufort West

Merweville

LeeuGamka

Laingsburg

Prince Albert

Touws River

Klaarstroom

De Rust

Calitzdorp

Oudtshoorn

Uniondale

Ladismith

Dysselsdorp

Van Wyksdorp

Karatara

Friemersheim

Herbertsdale

Rheenendal

George

Sedgefield

Heidelberg

Riversdale

Albertinia

Wilderness

Groot Brak River

Plettenberg Bay

Knysna

Klein Brak River

Mossel Bay

Still Bay


Gouritz River

and tributaries

Leeu

Koekemoer

Dwyka

Gamka

Taka

Sand

Gamka

Dwyka

Olifants

Buffels

Olifants

Olifants

Kamanassie

Touws

Groot

Duiwenhoks

Gouritz

Goukou


Coastal Rivers

Matjies

Keurbooms

Klein Brak

Wilderness

Bloukrans

Swartvlei

Groot Brak

Groot (West)

Gwaing

Kaaimans

Sout (East)

Hartenbos

Piesang

Knysna

Maalgate

Goukamma

Noetsie

Blinde


Doornfontein

Walkers

Stols River

Leeu-Gamka

Merweville

Oukloof

Floriskraal

Gamkapoort

Raubenheimer

Gants

Stompdrif

Prins River

Calitzdorp

Kammansie

Miertjieskraal

Ernest Robertson

Brandwag

Swart River

Bellair

Akkerkloof

Garden Route

Zandfontein

Duiwenhoksrivier

Wolwedans

Korinte-Vet

Hartbeeskruil


WMA Primary activities

  • Afforestation – primarily Coastal Belt (Plettenberg Bay/Knysna area)

  • Agricultural

  • -Grapes and apples (Langkloof)

  • -Ostrich farming (Oudtshoorn)

  • -Stock farming (Karoo)

  • -Dairy farming (Coastal)

  • -Vegetables (Coastal)

  • Eco-tourism – primarily Coastal Belt, but also locally in Karoo and Little Karoo


Water sources in WMA

  • Surface water ( incl dams)

  • Groundwater

    -Groundwater NB in dry inland areas – used for domestic supply + stock watering, and irrigation (Gamka, Groot and Olifants areas)

    -Over-exploitation in some areas


Extent of GRDS

The GRDS excludes :

  • majority of the coastal catchment areas covered by the Outeniqua Reserve Determination Study (ORDS)

  • other previous Reserve studies

  • only covers the Groot, Gamka, Olifants and Gouritz catchment areas.


Thank you!


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