General Overview of Integrated Hydrological Planning (IHP)

• New sub-directorate– Natural Hydrology; both groundwater and

surface water– Interaction between surface and groundwater– Conjunctive use– Climate change

Functions

• Support service to DWAF– CD:IWRP

– CD:IM

– RDM

• Management and guideline documents (management tools)– Hydrological planning and management

– Geohydrological management and planning

– Limited development of tools to support planning

PSP Projects• Groundwater Decision Tool (GDT) (DWAF

and WRC)

• Guideline document: Planning, development and management of dolomitic aquifers

• Guideline document: Artificial recharge as part of planning. (WRC and DWAF)

In-house projects

• Conjunctive use– Deep aquifers in the Eastern Limb of the BIC– Alluvial aquifers and off-channel storage

• Support to Internal Strategic Perspectives (ISPs)

• Albany Coast, ORWRDP, GWRA II

• GRIP (Limpopo and Eastern Cape)

Thank you

Exploration: What are we looking at ?Exploration: What are we looking at ?

1000

m

•Ore Body Exploration Drilling – can start 15years prior to mining and continuous till and during mining

•As deep as ore? Impacts on groundwater environmental or resource? Yes/No

NATURAL GROUNDWATER

?

EIA/EMP/EMPR (Resource assessment)

RLS

REEF

Geological structures

Magmatic intrusion

Mineral vs. Groundwater exploration

Borehole depth distribution % Cumulative Frequency of Diamond Core Drilling Depths vs. Air Percussion Water

Borehole Depths

0

200

400

600

800

1000

1200

1400

0.00 20.00 40.00 60.00 80.00 100.00 120.00

% Frequency

De

pth

Ra

ng

e (

m)

ExplorationBoreholes

Water relatedinvestigations

Impact? Or not?

South African Groundwater South African Groundwater Decision ToolDecision Tool

OverviewOverview

Aquifer Characterization GIS (ACGIS)

Groundwater Decision Tool (GDT)

Groundwater Dictionary

The South African Groundwater Decision Tool (SAGDT) will comprise of the integration of the

following applications:

ACGISACGIS

GDTGDT

Note: Not to scale

GIS

Area

Population

Borehole

Slug Test

CooperJ

Toxin

Scenario Object Tree

River

Boundary

River

Boundary

Toxin

Population

Slug Test

Cooper Jacob

Groundwater DictionaryGroundwater Dictionary

Target audience range from novice to expert user

Formal definitions, descriptions and layman’s terms

Definitions supported by pictures and animation

FET water network and development of education tool

Scenario WizardScenario Wizard

Typical example scenarios:

Reserve determination on quaternary / internal world level

Decanting of open cast / underground mine

Contamination of village water supply

etc…

1. Step-by-step guide in setting up pre-defined scenarios

2. Valuable software training tool

3. Aimed at the inexperienced user