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.
The Brazos River. The Brazos River is 1,280 miles in length and runs from Blackwater Draw, Curry County, New Mexico, through the heart of Texas and also empties into the Gulf of Mexico.