conceptualisation precipitation (100 %) recharge (4 %) surface runoff (6 %) evapotranspiration (<...

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Conceptualisation Precipitation (100 %) Recharge (4 %) Surface runoff (6 %) Evapotranspiration (< 30 %) Sub-surface lateral drainage (> 60 %)

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Page 1: Conceptualisation Precipitation (100 %) Recharge (4 %) Surface runoff (6 %) Evapotranspiration (< 30 %) Sub-surface lateral drainage (> 60 %)

Conceptualisation

Precipitation (100 %)

Recharge (4 %)

Surface runoff (6 %)

Evapotranspiration (< 30 %)

Sub-surface lateral drainage (> 60 %)

Page 2: Conceptualisation Precipitation (100 %) Recharge (4 %) Surface runoff (6 %) Evapotranspiration (< 30 %) Sub-surface lateral drainage (> 60 %)

Typical Plinthic Catena

Page 3: Conceptualisation Precipitation (100 %) Recharge (4 %) Surface runoff (6 %) Evapotranspiration (< 30 %) Sub-surface lateral drainage (> 60 %)
Page 4: Conceptualisation Precipitation (100 %) Recharge (4 %) Surface runoff (6 %) Evapotranspiration (< 30 %) Sub-surface lateral drainage (> 60 %)

Conceptualisation

Page 5: Conceptualisation Precipitation (100 %) Recharge (4 %) Surface runoff (6 %) Evapotranspiration (< 30 %) Sub-surface lateral drainage (> 60 %)

Increasingly permanent water table

Fluctuating water table

GlencoeWasbank

Longlands

Kroonstad

Katspruit

Champagne

Wasbank

Wasbank

< 0.5 m

Page 6: Conceptualisation Precipitation (100 %) Recharge (4 %) Surface runoff (6 %) Evapotranspiration (< 30 %) Sub-surface lateral drainage (> 60 %)

Diverging water flow

Glencoe

LonglandsKroonstad / Estcourt

Wasbank

Wasbank

GlencoeGlencoe Glencoe

Wasbank

Glenrosa

Wasbank

WasbankLonglands

Converging water flow

Concave Landscape

Convex Landscape

Wasbank

Page 7: Conceptualisation Precipitation (100 %) Recharge (4 %) Surface runoff (6 %) Evapotranspiration (< 30 %) Sub-surface lateral drainage (> 60 %)

Wetland types – concept hydrology

Page 8: Conceptualisation Precipitation (100 %) Recharge (4 %) Surface runoff (6 %) Evapotranspiration (< 30 %) Sub-surface lateral drainage (> 60 %)

Urban developments - excavation

Page 9: Conceptualisation Precipitation (100 %) Recharge (4 %) Surface runoff (6 %) Evapotranspiration (< 30 %) Sub-surface lateral drainage (> 60 %)

Urban developments - paving

Page 10: Conceptualisation Precipitation (100 %) Recharge (4 %) Surface runoff (6 %) Evapotranspiration (< 30 %) Sub-surface lateral drainage (> 60 %)

Opencast mining impacts

Page 11: Conceptualisation Precipitation (100 %) Recharge (4 %) Surface runoff (6 %) Evapotranspiration (< 30 %) Sub-surface lateral drainage (> 60 %)

Underground mining impacts

Page 12: Conceptualisation Precipitation (100 %) Recharge (4 %) Surface runoff (6 %) Evapotranspiration (< 30 %) Sub-surface lateral drainage (> 60 %)

Agricultural impacts – surface mainly

Page 13: Conceptualisation Precipitation (100 %) Recharge (4 %) Surface runoff (6 %) Evapotranspiration (< 30 %) Sub-surface lateral drainage (> 60 %)

Agricultural impacts – surface mainly

Page 14: Conceptualisation Precipitation (100 %) Recharge (4 %) Surface runoff (6 %) Evapotranspiration (< 30 %) Sub-surface lateral drainage (> 60 %)

Forestry impacts – water!