Iodine supplements usually aren't necessary if you live in the United States or in most developed countries. Some alternative medicine practitioners recommend iodine tablets or kelp supplements â which are high in iodine â for people with hypothyroidism.
The area within the entire watershed of the Rio Grande is some 336,000 square miles (870,000 square km). Because a large proportion of the riverâs basin is arid or semiarid, however, only about half of the total area, or about 176,000 square miles (456,000 square km), actually contributes to the riverâs flow.
This area is marked by rugged mountain ranges, such as the Guadalupe, Mogollon, Organ, Sacramento, and San Andres mountain ranges, separated by desert basins. The Rio Grande River flows north to south through the Basin and Range Region and exits New Mexico in the south to form the border between Texas and Mexico.