Carefully remove the photos from the water, or gently remove them from a damaged album. Separate any photos that are stacked on top of one another. Be careful not to rub or touch the actual photo surface.
Gently rinse both sides of the photo in a bucket or sink containing clear, cold water. Do not rub the photos and be sure to change the water frequently.
If you don’t have the time to dry your damaged photos right away, rinse them as mentioned above. Then carefully stack the photos between sheets of wax paper, seal them in a Ziplock-type plastic bag, and lay them flat in a freezer to inhibit damage. Then later, when have more time, you can defrost the photos, separate them, and lay them out to air-dry.
Begin with photos that you have no negatives for, or ones in which the negative is also wet.
If your photo is in a frame with glass, you will need to gently remove the frame, but hold the glass and the photo together. The, holding both, rinse with clear, cold, flowing water. Use the water stream to gently separate the photo from the glass.
It is important to note that some historical photographs or documents are very sensitive to water damage and may not be recoverable. Before freezing these, talk to a professional conservator and see how they recommend proceeding.