(CNN)Thousands of people face uncertain futures in Harvey's aftermath. There are several ways you can help.
Donate money: By clicking on the button below, you can donate to charities vetted by CNN's Impact Your World. These organizations are helping in Harvey's immediate aftermath, and they will continue working through the long term.
If you are in Texas, there are additional ways you can contribute:
Donate blood: The South Texas Blood & Tissue Center desperately needs more than 2,000 units of blood. The biggest need is for O positive and O negative. A list of locations to donate blood can be found here.
Donate food and clothing: Houston Mayor Sylvester Turner is asking people to donate clothing, medical supplies, baby items, and food to nearby shelters. Feeding Texas is coordinating with local food banks to distribute food and cleaning supplies. The organization is asking people to drop off non-perishable food, bleach, and paper towels. The Texas Diaper Bank is seeking diaper donations. You can mail them to 5415 Bandera Road, Suite 504, San Antonio, Texas 78238 or drop them off at the same address.
Temporary Housing: Homeaway is offering free or discounted rental homes for anyone displaced by the storm.
All service fees are waived for those affected by the disaster and checking in between September 11th and October 15th, 2017.
Help with clean up: Austin Disaster Relief Network is asking for toiletries, inflatable mattresses, undergarments, and cleaning tools. They can be dropped off at the Hope Family Thrift Store in Austin. Volunteers can also sign up for cleaning efforts there. The Coastal Bend Disaster Recovery Group needs construction cleanup supplies -- debris containers, truck cranes, forklifts, ladders, and nail guns.
Donate toys and supplies: Mayor Turner said many children inside the shelters need "things to do" and is asking people to donate coloring books, puzzles, and other toys to the shelters.