1. A Study of the Drainage as Based on an Evaluation of the Irrigated Land in the Flood Plain of the River Moustiques Etude de drainage en vu de la valorisation des terres irrigables dans la plaine de Moustiques
Pre-Site Visit Preparation: the creation of field maps for the basin area using GIS
Students:Mary Strazer
Magnea Ingolfsdottir
Project partners: Herrera Environmental Consultants Inc.

2. The Project
Roughly 35,000 people of Northern, Haiti living and working in the vicinity of Les Moustiques river, are seasonally inundated by flood waters.
Engineers from Herrera Consultants Inc. are planning a site visit to the area to assess the situation and create design alternatives.
Before they go, they need a set of field maps of the basin area.

4. Objectives
It was our task to create GIS maps of the basin and watershed surrounding Les Moustiques in Haiti. In order to complete this task we needed to delineate the Riviere Moustiques drainage basin (watersheds, sub-basins, and streams), and develop georeferenced GIS maps of la plain de Moustiques.

5. Example of a Field Map

6. How We Built the Maps
First, we converted the point data of the contours into a surface using the spatial analyst interpolate to raster tool

7. Contour Data we were given

8. Interpolation Surface

9. How We Built the Maps
Secondly, we used the spatial analyst hydrology tool and the raster calculator to create the watershed, basins, and streams.

10. Streams

11. Basin

12. Watershed

13. How We Built the Maps
Thirdly, we georeferenced our aerial photo to our contoured data.

14. Georeferencing

15. Final Product