As first responders continue to rescue people stranded by the torrential flooding that descended on central Texas Friday, dozens of people are facing a parent’s worst nightmare: Their children are missing.

Meteorologists say the Texas Hill Country is frequently hit with floods, although some officials and residents were caught off guard by the catastrophic storms, which killed more than 100 people over the holiday weekend.

As the devastating effects of the Hill Country floods continue to impact Texas families, ABC13 is now confirming 16 fatalities from the Houston region.

• Texas flood victims: At least 150 people are known to be missing in Kerr County as a result of the flooding in central Texas, according to officials. At least a dozen others are missing in other parts of the state. Authorities said Wednesday that 120 people have died. Read more about the victims.

NBC News' Priscilla Thompson examines the cultural impact of Camp Mystic as it mourns the loss of campers and counselors following deadly floods.

At least 104 people are dead after heavy rain led to devastating flooding in Texas. Kerr County was hit the hardest, with at least 87 deaths, including 30 children. President Donald Trump signed a disaster declaration for the county and the Federal Emergency Management Agency is on the ground there.

Texas officials confirmed that 25 girls at Camp Mystic in Kerr County went missing after the Guadalupe River rose more than 20 feet in less than two hours.