Oʻahu topographic map

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Approximately 3.9 million years ago, the Waiʻanae volcano created the island of Oʻahu. About 2.5 million years ago, the Koʻolau volcano breached the ocean's surface and continued to grow in elevation until about 1.7 million years ago, when it went dormant. Most of the eastern or windward portion of Oʻahu…

Average elevation: 32 m

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Lisianski Island (Hawaiian: Papa‘āpoho) is one of the Northwestern Hawaiian Islands, with a land area of 384.425 acres (155.571 ha) and a maximum elevation of 40 feet (12 m) above sea level. It is a low, flat sand and coral island about 905 nautical miles (1,676 km) northwest of Honolulu. The island is…

Average elevation: 1 m

There are several streams that run through Waipahu, including Waikele Stream and Kapakahi Stream. Waikele Stream runs along the Hawaii Plantation Village and down into Pouhala Marsh Wildlife Sanctuary, which is habitat for several endangered bird species that are endemic to Hawaii. There is roughly 140 feet of…

Average elevation: 164 m