GIS Trainings in Support of Environmental Information Management Advisory System EIMAS

GIS Trainings in Support of Environmental Information Management Advisory System [EIMAS] in Antigua and Barbuda

Outline of Training Workshop

Submitted by

Jacob Opadeyi Faculty of Engineering The University of the West Indies St. Augustine, Trinidad and Tobago. Tel: 1-868-777-7233 Email: [email protected]

April 1st, 2011

1 Training Module 1: Identification and quantification of land available for future development

Sustainable land management requires that a good record of land stewardship be maintained by state agencies in Antigua and Barbuda. In this era of climate change and sea level rise, it is imperative that a country ensure that its land resources are used efficiently and are conserved for future generations. In order to manage land resources effectively the following analytical questions should be answered:

• How much land exists? • What are the properties of the land resources? • Who owns what and how much do they own and where are these parcels located? • To what different uses is the land being exposed? • To what risks are the land resources exposed? • How much revenue is being derived or can be derived from the land? • What is the best use of land for both economical and environmental gains? • What is the carrying capacity of the land resources? • How much real estate is tied to mortgage loans?

The objective of this application is to determine what land is available for developmental activities if all fragile lands and other ecosystems are to be preserved and conserved.

Learning Outcomes Through this training module, the participants will develop  ability to conceptualize, design, and develop GIS applications;  ability to prepare data for GIS processing;  ability to undertake spatial analysis using GIS analytical tools.

The application may be used to support land use policies and development control. It may be used to support policy options such as:

1. How long would it take for the remaining land stock to be consumed?

2. What is the total population that the remaining land stock can support using the following development scenarios? a. Development based on high density scheme (HDS)? b. Development based on medium density scheme (MDS)? c. Development based on low density scheme (LDS)?

3. Can the remaining land stock support extensive or intensive land development? If, we: a. Preserve all agricultural lands AND all forest lands? b. Preserve all forest lands only? c. Preserve all agricultural lands AND only 50% of our forest? d. Preserve 50% of all agricultural lands AND 50% of our forest?

2 The GIS datasets required for this applications are: 1. Coastlines Polygons 2. Inland water bodies: Lakes, ponds Polygons 3. Rivers or streams Lines 4. Wetlands / swamp Polygons 5. Ecologically sensitive sites Polygons 6. Forest Polygons 7. Agricultural lands Polygons 8. Settlements (Building footprints) Polygons 9. Roads Lines 10. Contour (Topography) Lines/Points 11. Planning regulations with respect to setback from roads Value (metres) 12. Drainage regulations with respect to setback from streams Value and lakes/ponds (metres) 13. Ecological regulations with respect to setback from Value ecologically sensitive sites (metres) 14. Setback from sea coastlines Value (metres)

Training Module 2: GIS-based methods of Watershed Risk Assessment

The objectives of this application are to: . Identify watersheds that are at a higher risk of being polluted and therefore should be identified as priority site monitoring. . Support EIA application processing through the estimation of pollutant loads of new development and its impact on the watershed.

The application when developed will support management decisions on all current and proposed landuse activities on watersheds that are at higher risk of being polluted.

Conceptual framework of the model 1. Calculating the unsaturated zone rating (GW) 2. Estimate watershed vulnerability (WVA) 3. Estimate watershed pollutant load (PL)

The goal of this tutorial is to enable the participants to understand how the ModelBuilder extension in ArcGIS can be used to create a GIS-based method for implementing a Watershed Risk Assessment model.

GIS Processes Required  Converting vector data themes into raster grid data themes  Conversion of point theme to polygon theme using Thiessen polygon concept  Performing weighted overlay operations 3  Reclassifying results  Conducting sensitivity analysis on the model

Data Required Data Theme Type Soil infiltration Vector polygon theme rate DEM-slope Vector polygon theme Landuse Vector polygon theme Rainfall Vector polygon theme

The Method Based on the decision to pursue an application that can facilitate the implementation of the Water Pollution Rules and the review of CEC applications, you will now create a Watershed Risk Assessment model using the ModelBuilder functionality of ArcGIS. ModelBuilder allows you to create a spatial model in the form of a Process Flow diagram. Using nodes you can represent input data, processes/spatial functions, and output data in the model. Arrows are used to connect nodes and represent the sequence of processing in the model. Models are advantageous in that they can be shared (documentation can be saved as part of a model) and they are reusable – you can reuse a model for a different geographical area simply by changing the input data.

The model to be created involves a combination of three main processes: a. Calculating the unsaturated zone rating (GWV) b. Estimating watershed vulnerability (WVA) c. Estimation of watershed risk model (WRM)

The Principles The procedures used for rating unsaturated zone and watershed vulnerability represent the potential for water, with or without contaminants, to: a. travel through the unsaturated zone to reach the water table in a ground-water supply source in a watershed b. travel overland or through shallow subsurface of a watershed to reach a surface- water supply intake in a watershed.(Eimers et al, 2000)

Learning Outcomes Through this training module, the participants will develop  the ability to prepare data for GIS pre-processing;  ability to undertake spatial analysis using model builder  ability to build GIS applications

4 Training Agenda

Schedule Day One: April 11th 2011 8:30 -9:00 Welcome and Opening 9:00 – Lecture 1: Introduction to GIS concepts and applications 11:00 11:00- Break 11:30 11:00- Lecture 2: Building GIS applications and GIS functionalities 12:00 12:00- Lunch 1:00 1:00- 2:00 Tutorial 1: Conceptual Design 2:00-2:30 Break 2:30- 5:00 Lecture 3: Logical design using Model Builder in ArcGIS: Watershed Risk Assessment Schedule Day Two: April 12th 2011 8:30 Tutorial 2: Data pre-processing -11:00 11:00- Break 11:30 11:00- Tutorial 2: Data pre-processing 12:00 12:00- Lunch 1:00 1:00- 2:00 Tutorial 3: Building and running the model 2:00-2:30 Break 2:30- 5:00 Tutorial 4: Building and running the model (changing the weights) 4:30- Discussion 5:00pm Schedule Day Three: April 13th 2011 8:30 Tutorial 5: Visualization of the results (reclassification, maps, and reports) -11:00 11:00- Break 11:30 11:00- Lecture 4: Using the results and updating the model with result 12:00 validation 12:00- Lunch 1:00 1:00- 2:00 Lecture 5: Logical design using Model Builder in ArcGIS: Identification and quantification of land available 2:00-2:30 Break 2:30-5:00 Tutorial 6: Data pre-processing Schedul Day Four: April 14th 2011 e 8:30 Tutorial 7: Building and running the model

5 -11:00 11:00- Break 11:30 11:00- Tutorial 8: Visualization of the results (reclassification, maps, and reports) 12:00 12:00- Lunch 1:00 1:00- 2:30 Class Discussion: Review and next step 2:30-3:30 Evaluation and Closing

The resources required for this training programme are:  Desktop or Laptop computers (one for each participant)  GIS Software: ArcGIS  Overhead computer projectors  White board with erasable markers  Participants are expected to have a good working knowledge of ArcGIS software.