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 is the fourth largest river in the US, stretching for 1,759 miles. The riverâs source is in the San Juan Mountains in Colorado while its mouth is in the Gulf of Mexico. The river has long been used for irrigation, and some dams have been constructed along the river line. The river marks the border between Texas and Mexico.