On the declivity of the Atlantic basin the first streams, branches of the North Platte River, already appeared.

在大西洋盆地的山坡地区，分布着许多由北普拉特河分出来的支流小河。

As such, Colorado contains the headwaters for the Rio Grande, Arkansas, Colorado, and South Platte Rivers, while Wyoming contains many of the headwaters for the Missouri, Snake, Columbia, and North Platte Rivers.

因此，科罗拉多州包含格兰德河、阿肯色河、科罗拉多河和南普拉特河的源头，而怀俄明州包含密苏里河、斯内克河、哥伦比亚河和北普拉特河的许多源头。