The English used in this article or section may not be easy for everybody to understand. (February 2012)
Kahoʻolawe is the smallest of the eight main volcanic islands of Hawaii. It is west of Maui and south of Lanaʻi. It is roughly 11 miles long by 6 mi (9.7 km) across (45 sq mi or 120 km2). The highest point, Lua Makika, is 1,477 feet (450 m) above sea level. The island is dry because its low elevation does not cause much rain (orographic precipitation) to fall from the northeastern trade winds.
Kahoʻolawe was used as a gunfire and bombing target by the United States military during World War II. It was a defense training area by the United States Navy from around 1941 until May 1994. Popular opinion in the state against this practice brought the end to this use. Navy has since been trying to cleanup unexploded ordnance (bombs and explosive shells) from the island. Ordnance is still buried or lying on the ground. Other items have washed down gullies and still other unexploded ordnance is underwater offshore. In 1981, the entire island was included on the National Register of Historic Places.
The island is planned to be given back to the Hawaiian people. In 1993, the U.S. Congress passed a law that "recognized the cultural importance of the island, required the Navy to return the island to the State, and directed the Navy to do an unexploded ordnance (UXO) cleanup and environmental restoration"  Archived 2005-12-02 at the Wayback Machine. The turnover officially occurred on November 11, 2003, but the cleanup has not yet been completed. The U.S. Navy was given $400 million and 10 years to complete the large cleanup task, but this work has gone much slower than planned.
In 1993, the Hawaii State Legislature established the Kahoʻolawe Island Reserve. It is made up of the whole island and waters out to 2 mi (3.2 km) from shore. By State Law, Kahoʻolawe and its waters can only be used for Native Hawaiian cultural, spiritual, and subsistence purposes; fishing; environmental restoration; historic preservation; and education. Commercial uses are not allowed. The Legislature also created the Kahoʻolawe Island Reserve Commission (KIRC) to manage the Reserve while it is held in trust for a "future Native Hawaiian Sovereignty entity"  Archived 2005-12-02 at the Wayback Machine.
After the cleanup is finished, the restoration of Kahoʻolawe will need ways to control erosion, restore the plant life, recharge the water table, and slowly replace alien plants with native ones. Plans will include methods for damming gullies and reducing rainwater runoff. Non-natives will temporarily stabilize some areas before the permanent planting of native plants.