Dan Harris reports for ABC News on the amount of donations from Americans that have not yet been spent by aid organizations. Harris writes:

Since January’s earthquake, Americans have already given $800.9 million in private donations to help the country rebuild. The money has gone to 23 charities that ABC News has been tracking. Only about 37 percent of the money has been spent. Nearly $588 million in donations is still sitting on the sidelines, as millions of Haitians continue to suffer.

Charities say that spending too quickly would risk creating waste and robbing money from the long-term work that must be done. But while they plan for the long-term, there is an immediate crisis.

More than a million people are homeless and a fifth of them still have no shelter, with the rainy season officially starting Friday and the hurricane season just around the corner.

Harris also points out that only half of the 9,000 latrines that are needed have been built.