these are the questiotion Whenever it rains to much in one area the_______ usally causes local flooding in that area. The rocky mountains make up important ________ between rivers that flow to the pacif ocean and hudson bay The ottawa river is a ______ of the st.LAWrence river ______ is often a big problem for the prairie farms when they need to grow their crops with it does not rain that much The mackenzice river that flows through the yukon has a huge _______ where it enters the arctic ocean of many little channels Winnipeg is located at the ________ where the red and assiniboine rivers meet and continue to flow north to hudson bay here are the answer Arid Confluence Delta Drainage basin Drought Ground water Tributary Watershed Water surplus