This is the Artibonite watershed. As you can see it straddles the border between Haiti and the Dominican Republic with the source of the watershed being in the DR and the endpoint in Haiti. It is a critical river system in many ways, one of them being it is a major source of agriculture for Haiti. Proper management of this watershed would obviously require cooperation between the two countries. Funny thing is, it is even hard to find a map that shows the entire watershed. Existing maps I have found tend to show either the Haitian portion or the DR portion. It is as if the other half didn't exist or something. I had to create this map myself, such as it is. The little green triangles indicate the communities on both sides of the border where we are working.