A slip (also sometimes called a scoop, scraper, or road scraper) was the common implement for moving dirt when doing such things as digging ponds or making fills where large volumes of dirt were needed.
RIO GRANDE. The Rio Grande rises in Rio Grande National Forest, San Juan County, Colorado (at 37Â°47' N, 107Â°32' W), as a clear, spring and snow-fed mountain stream 12,000 feet above sea level. Its origin is at the Continental Divide in the San Juan Mountains.
According to the International Boundary and Water Commission, the Rio Grande River starts in the San Juan Mountains in Colorado and continues 1,901 miles to the Gulf of Mexico. It is among the 20 longest rivers in the world and is the fifth-longest in the United States.