Question 1048178: Water allocations and water flows in drought years. Here I provide for you the total inflow and outflows of surface water to and from SC. Assume the SC water system is and has been at steady state (ΔS = 0). The total flows in SC are presented as follows (all quantities in millions of acrefeet (MAF) per year). One acre foot is the volume corresponding to an area 660 ft x 66 ft x 1 ft where 660 ft x 66 ft is one acre, 1 AF = 325,851 gallons):
Table 1. Where South Carolina’s surface water comes from Precipitation 103.0 MAF/yr Net imports from out of state 1.7 MAF/yr Groundwater Pumping 2.0 MAF/yr Total: 106.7 MAF/yr
Where South Carolina’s surface water goes
evaporation and transpiration 61.0 MAF/yr
agriculture 3.0 MAF/yr Flows for wild & scenic rivers, and for estuary salinity standards 11.5 MAF/yr Other river flow to the ocean 27.2 MAF/yr Urban/industrial use 4 MAF/yr Total: 106.7 MAF/yr
9) There have been proposals to accommodate South Carolina’s growing population with water that is now used for agriculture. If half of the water (1.5 MAF) now going to agriculture went to urban and industrial uses instead, how many new urban dwellers could be supported with this water? All you need are three numbers: (1) South Carolina agriculture currently uses roughly 3 million acre-feet per year, (2) residential, institutional, and industrial water use totals approximately 133 gallons per person, per day in South Carolina, and (3) there are 326,000 gallons in an acrefoot. You’re on your own for this one. Show ALL work here, no work no points: (2 points
Answer by ikleyn(52781)   (Show Source):
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