New Mexico water is mostly all fresh water.We get New Mexico water from mostly the Rio Grande and some other lakes, streams, and rivers. The Rio Grande has a length of 1,896 miles. Everyone drink's the Rio Grande Water because it is the most popular river that we take water from like to drink.One of the fish that live in the Rio Grande is the cutthroat trout. The Rio Grande cutthroat trout live for about 5 years and live in the Santa Fe National Forest.