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 Facts. The Rio Grande is the fourth longest river in the United States, flowing approximately 1,896 miles from Colorado to the Gulf of Mexico, forming part of the U.S.-Mexican border along the way.Because its length is debated it is either North America's fourth or fifth longest river.nteresting Rio Grande Facts: Other names for the Rio Grande have included Rio Bravo, Keresan (Big River), Tewa (Big River), Tiwa (Big River), and Towa (Great Waters). The Rio Grande flows from Colorado through New Mexico, Texas, Chihuahua, Coahuila, Nuevo Leon, and Tamaulipas.