Flash floods last week in Texas caused the Guadalupe River to rise dramatically, reaching three stories high in just two hours.

In Kerr County, the hardest-hit region, officials said the number of missing remained unchanged, at 161, since Tuesday. The floods have killed at least 121 people statewide.

At least 161 people remain missing in Kerr County, Texas, as authorities and volunteers search the Guadalupe River for victims.

Flooding caused by the overflowing Guadalupe River has prompted widespread evacuations in Kerrville and surrounding areas of Kerr County, Texas.

Satellite imagery of Camp Mystic and other areas along the Guadalupe River shows the devastating aftermath of the Fourth of July floods in Texas.

New satellite images from Maxar Technologies reveal the devastating path of the fast-rising floodwaters that washed out homes and vegetation along the Guadalupe River in Texas on July 4. The flooding appears to have receded at the time the images were captured,