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.
Rio Grande Wild and Scenic River. The Rio Grande Wild and Scenic River was established in 1978 to protect a 196-mile (315 km) portion of the Rio Grande in Texas. Parts of Brewster, Terrell, and Val Verde counties are included in this section of the river.