The Prairie Blood coulee winds through a property on the Kainai Nation, also known as the Blood Tribe, in southern Alberta. On a warm fall day, about a dozen people haul willows, mulch, dirt and water to several spots along a dry creek bed. Some pound large posts into the ground. Technicians from Blood Tribe and volunteers from local environmental groups are building five beaver dam analogs, which mimic a natural logjam. They hope to restore the stream flow to help the landowner care for his animals and have more water for wildlife as the area experiences a decade-long drought.