1 calorie of heat is the amount needed to raise 1 gram of water 1 degree Centigrade. 1 calorie (cal) = 4.184 J. (The Calories in food ratings are actually kilocalories.) A BTU (British Thermal Unit) is the amount of heat necessary to raise one pound of water by 1 degree Farenheit (F). 1 British Thermal Unit (BTU) = 1055 J (The Mechanical Equivalent of Heat Relation) 1 BTU = 252 cal = 1.055 kJ.
San Antonio River Walk. A couple strolls along the River Walk. The San Antonio River Walk (also known as Paseo del RÃ­o or simply as the River Walk) is a network of walkways along the banks of the San Antonio River, one story beneath the streets of San Antonio, Texas, USA.
CDT Sunday: Flooding on Interstate 35 in San Marcos, Texas. Flood waters from the Blanco River are now over I-35SB in San Marcos #txwxâ NWS San Antonio (@NWSSanAntonio) May 24, 2015 4:05 a.m. CDT Sunday: Flood wave now moving onto San Marcos River in Texas.Blanco River near San Marcos now at 38.55 feet.vacuated #SMTX neighborhoods include the Blanco Gardens area, Crepe Myrtle/Pecan/Hackberry St., and part of Blanco Vista near the river.â San Marcos (@CityofSanMarcos) May 24, 2015 3:51 a.m. CDT Sunday: Flooding shown on the Blanco River in Hays County, Texas.