Sarah Alvarez and her mother Janie De Los Santos (R), take a break from cleaning their flood damaged house in San Marcos, Texas May 26, 2015. Torrential rains have killed at least 10 people in Texas and Oklahoma, including three in Houston where floods turned streets into rivers and led to about 1,000 calls for help in the fourth-most populous U.S. city, officials said on Tuesday. REUTERS/Tamir Kalifa