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.
In 1978, a 196-mile section of the Rio Grande, from Mariscal Canyon to the Terrell-Val Verde county line, was designated by Congress as a Wild and Scenic River, a designation the Rio Grande shares with over 150 other rivers in the United States.