of zero damage in Providence), To prevent flooding of Providence, a 

 pimping station is incorporated in the design of the barrier. The 

 runoff will be discharged into the bay by means of five pur.ps i7ith a 

 combined capacity of 8,000 cu'^ic feet per o.-c-nd at a head of 22 feet, 

 and a capacity of 9>200 cubic feet per second at a head of 16 feet 

 (see Appendix G), 



b. Lower Ba;;/- Barriers , The peak flow at this location is 

 8I|.,000 cubic feet per second. The contributing streams, besides the 

 ¥oonas qua tucket and Iloshassuck Pdvers, are the Blacks tone River, with 

 a peak flow of 30,900 cubic feet per second, the Pawtuxet River v:ith 

 a p?al<: flow of ^,800 cubic feet per second, and the Taunton River with 

 a pealc flow of ll|.,700 cubic feet per second. The runoff from the re- 

 maining 235-square-mile land area and the contribution of the 119- 

 3 quare -mile -water area are, respectively, 27,800 and 1|0,000 cubic 

 feet per second. The total inflow is 720,000 acre-feet, or 7,6 

 inches of runoff. This runoff would cause a rise of less than 

 0,3 foot in the water level due to the large storage capacity of 

 the bay and to the discharge capacity of the openings. Table G-k 

 summarizes this data, and Plate 0-6 shows the total discharge and 

 the contribution thereto. 



C-10 



