What are the requirements for getting an Indian visa?

I cannot find the Indian consulate here in Hawaii. I just want to know if a citizen of the United Sates can acquire an Indian visa when he/she arrives in India.

As a holder of a US passport, it is not possible for you to obtain an Indian visa when you arrive in India. The Consulate of India in San Francisco is servicing Hawaii. Therefore, you should send your request to the visa facilitation services in San Francisco.