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.
The Rio Grande's major tributaries include Red River, Rio Hondo, Rio Pueblo de Taos, Embudo River, Santa Fe River, Galisteo Creek, Alamito Creek, Terlingua Creek, Pecos River, Devils River, Conejos River, Rio Chama, Rio Conchos, Rio Salado, Rio Alamo, and San Juan 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.