GIS Application in Groundwater

ProtectionCRP 514 Term Paper

Term 061

Humoud W. Al-Utaibi

Outline Introduction GIS Application in Groundwater Vulnerability GIS Application in Groundwater Monitoring and

Contamination Integration with other Groundwater Modeling

Software Advantages of using GIS in groundwater Field Case Studies Conclusion

Introduction

Why we protect groundwater ,What is GIS Bringing together these two communities

by using a common geospatial data model

GISGround water

GIS Application in Groundwater Vulnerability

“The tendency or likelihood for contaminants to reach a specified position in the groundwater system”

identify areas (Geographical) where groundwater contamination is likely to occur

DRASTIC factors

DRASTIC FACTORS

Output

Maps indicating: Most Vulnerable Mid vulnerable Least Vulnerable

GIS Application in Groundwater Contamination

Visualization—using the software to organize and display site and contamination data in ways that promote understanding of current conditions, problems, potential solutions, and eventual cleanup choices,

Sample optimization—selecting the minimum number of samples needed to define a contaminated area within a predetermined statistical confidence,

Cost-benefit analysis—either assessing the size of the zone to be remediated according to cleanup goals, or estimating human health risks due to the contaminants. These can be related to costs of cleanup

Analysis of GIS Information Layers

Data Interpretation

Raw Data

Conceptual Model Development Process

3D Stratigraphic & Hydrogeologic

Modelwith

Boundary conditions

Numerical Model

GIS Layers

Model Construction Process

Integration with other Groundwater Modeling Software

Groundwater Models: Surfer, Modflow, EQuIS

Automated creation of contours, grids, vector maps

Display in ArcMap (2D) and 3D Analyst (3D)

Map or photo may be draped on 3D grid Facilitates understanding of land surface,

groundwater flow, contaminant migration

Case Studies

NAPL Contamination Evaluation Using GIS

Case Study

Advantages of using GIS in groundwater Field

Integrates common database operations, such as query and statistical analysis, with the visualization and geographic analysis benefits offered by maps

Provides environmental decision support through its integration of data from multiple sources (i.e., spreadsheet, drawing, and database files) into a platform that supports query operations, data manipulation and visualization

Generate two-dimensional maps of data and surface features. The 3D Analyst extension provides the capability to layer two-dimensional maps to provide a quasi–three-dimensional representation of site features (e.g., geologic layers, contamination)

Allows analysts to manage and share their site data using a project file that integrates the different data and visualization files.

Conclusion

GIS is very useful tool in groundwater fieldGIS integrate with other groundwater

modeling software like surfer, MODFLOW, It produce maps that can be easily

interpreted and ease making the right decision

Efforts need to be exerted in uploading the legacy data

Thank you

MCAS Ground-Water Model Geometry

3-D geologic solids model depicts non-uniform layering of finite-difference groundwater flow model (MODFLOW-2000).

Geologic model.

pollution

groundwater mining