The article presents a way to estimate streamflow in areas without measuring equipment by comparing it to similar areas that do have data. They looked at different characteristics of the land to see how they affect streamflow. By using this method, they can predict streamflow in unmeasured areas based on nearby data. The size of the area doesn't always directly relate to the amount of streamflow. They also created a formula to estimate the average flow of water in a year based on the characteristics of the area.