These requirements do not impose specific performance standards on organizations. The international scope of ISO 14001, coupled with differing national laws and enforcement policies, makes it impossible to establish acceptable parameters for air emissions, water discharges and other similar environmental impacts.
The longest river in the United States is the Missouri River. The Missouri River starts in Montana and covers 2,540 miles before flowing into the Mississippi River, the second longest river in the United States. The Missouri-Mississippi river system is the third longest river in the world. The longest undammed river in the contiguous USA is the Yellowstone River at 692 miles in length. The 10 longest rivers in the United Sates are: Missouri: 2,540 miles. Mississippi: 2,340 miles. Yukon: 1,980 miles.
The Snake River is the thirteenth longest river in the United States. Its watershed is the 10th largest among North American rivers, and covers almost 108,000 square miles (280,000 km2) in portions of six U.S. states: Wyoming, Idaho, Nevada, Utah, Oregon, and Washington, with the largest portion in Idaho.