BRAE 349 Final exam with correct solutions

BRAE 349 Final exam with correct solutions How much water is stored as groundwater in California (reservoir storage is about 40 Million AF)? - 850 million AF When were the state water projects constructed in California? - 1960's Assuming you could...roughly how much time would it take to count the water molecules (H2O) in one small drop of water at a rate of one per second? - 300 Billion Centuries Which of the following represent relatively "new" sources of water in California? - All of the above; treated wastewater, desalinization, and improved efficiency What is one of the biggest issues with the San Francisco Delta? - Non-native fish How much subsidence has occurred at Mendota, California after groundwater pumping? - Correct answer: About 30 feet (according to Dr. Poland) What is the lift (in feet) and combined horsepower of the Edmonston Pumping Plant that moves water over the Tehachapi Mountains to Southern California? - 1,926 feet and 1,120,000 Horsepower From the water allocated to California from the Colorado River in a "normal" year, how much of the 4.4 million acre-feet allocation is used by agriculture as senior water rights? - 87.5% What is one of the greatest issues in California's hydrology? - A majority of the rain water falls in the northern part of the state, but a majority of the population is in the southern part of the state. Why is reservoir storage needed in California? - Difference between supply and demand of the snow pack/rainfall runoff water Assuming the population in California is 39.5 million, how many gallons of water would be needed to make the food to create 1 hamburger (use the quarter-pounder from lecture) for lunch for 1 day? Assume grain-fed beef versus grass-fed beef. - 23.7 billion gallons (or about 72,700 Acre-Feet) Why are nitrates in the groundwater an issue? - Nitrates can cause health problems such as Blue Baby Syndrome