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 USGS, the Rio Grande is tied with the St. Lawrence River (also 1,900 miles) as the fourth-longest North American river, exceeded only by the Missouri-Mississippi, McKenzie-Peace, and Yukon rivers.he U.S. Geological Survey puts the total length from the New Mexico source of its longest upper prong at 1,280 miles. With a drainage area of about 42,865 square miles, it is the second-largest river basin in Texas, after the Rio Grande.