A major flood event also struck the Texas Hill Country in July of 1987 after a series of 17 thunderstorms moved slowly, in succession, over the headwaters of the Guadalupe River in Kerr County. Anywhere from 5 to 10 inches of rain fell on the flood-prone areas, now deemed “Flash Flood Alley,” according to a National Weather Service report.

"Let's put an end to the conspiracy theories and stop blaming others," Texas Agriculture Commissioner Sid Miller said in a statement.

When the precipitation intensified in the early morning hours Friday, many people failed to receive or respond to flood warnings at riverside campsites known to be in the floodplain.

The hilly Texas region where a rain-swollen Guadeloupe River delivered tragedy last week is uniquely suited to torrential flooding. Flood events are common in Hill Country.

Authorities confirmed Wednesday that 120 people have died in the central Texas floods. Follow for live updates.

Officials warned that the full extent of the catastrophe is unknown and unaccounted victims could still be found amid the massive piles of debris.

These maps and charts show the scale and intensity of the Hill Country floods and highlight Camp Mystic’s proximity to high-risk flood zones.

"I asked her if she could get my mom upstairs, and she was able to get her upstairs before four feet of water came in."

A hydrologist explains why the region is known as Flash Flood Alley and how its geography and geology can lead to heavy downpours and sudden, destructive floods.

The Republican governor laid out an ambitious agenda that includes an unexpected array of conservative bills that failed during the regular session.