SW/GW INTERACTION

1
SW/GW INTERACTIONWorkshop Sessions I and II"
2
Common Resource
3
Workshop Format

• Present current understanding of GW/SW
  interaction processes (through presentation of a
  number of papers)
• Understanding and Quantifying groundwaters
  contribution to baseflow (Roger Parsons).
• Incorporating SW-GW interactions into the
  monthly Pitman rainfall-runoff model (Denis
  Hughes)
• SW-GW interaction at small scales implications
  for low flow estimates (Presented on behalf of
  Simon Lorentz by Kevin Bursey)
• Develop recommendations (for research and
  implementation)

4
General Discussions

• Proper quantification of groundwater resources in
  order to include groundwater component in the
  yield model.
• The impact of groundwater abstraction of surface
  water flows and where does groundwater contribute
  to flows (including temporal changes)
• Classification (good/bad)
• Process vs. model studies
• Terminology!!!
• Data requirements for integrated water resource
  assessments
• Technology Transfer of Research Results for WRM
• Scaling issues (catchment vs. local-scale
  processes)
• Exchange of knowledge and communication

5
Challenges

• How do we bring groundwater up to an equal basis
  of surface water resource assessment?
• Need to understand mutual influences between
  groundwater and surface water (including alluvial
  aquifers)?
• Need to develop time series for groundwater?
• How do we handle double accounting of resources?

6
Next Steps?

• WR2005 to include more gw sw-gw links
• Need to bring gw yield info up to same level as
  surface water (conceptual level study) gw
  potential map gw assessment map
• Need to document conceptual understanding
• Models/Methods/Isotope techniques
• Manage/promote correct terminology
• Regular exchange of knowledge to broad hydro
  community.
• Water quality!!!
• Need to consolidate all research that has already
  been done
• Baseline data/information

7
Recommendations?

• Research Agenda
• Implementation of RDM
• Integrated Water Resource Assessments
• Low Flows and Stream Flow Reduction Activities
• ..