The devastation from Hurricane Harvey continues to be felt throughout Texas, as heavy rains and catastrophic flooding are expecting to continue for days.

Although the extent of the damage and death toll is not yet clear, the National Weather Service is already calling the storm “unprecedented.” Major highways are submerged in floodwaters, emergency services have received thousands of calls and authorities are urging residents to stay in place.

Recovering from the disaster could take years, according to the Federal Emergency Management Agency. There are an untold number of homes and people affected, and the additional flooding and rainfall is set to make the situation even worse.

As emergency services, charities and aid groups gear up to address the massive need from Harvey, here are some ways that you can help.

Here is how you can help and read more.