APPENDIX C 

 HYDROLOGY AMD STREA14 FLOW 



C-1. INTRCDUCTION 



This appendix presents- data to supplement the sections of the 

 main report relating to the subjects of hydrology and stream flow. 

 It includes a summary of temperature and precipitation data to 

 amplify the section of the report on "Climatology", a summary of 

 stream flow coincident with hurricane tidal flooding, the transposed 

 September 1938 storm, the hydrologic possibilities with the 1938 

 hurricane centered over the Woonas qua tucket and Iloshassuck Rivers, 

 and the Blackstone River, and design stream flow to amplify the 

 section on "Design Hurricane Tidal Flood", 



C-2. TEMPERATURE AW PREGIPITATIOK 



The variable and temperate climate of the Narragansett Bay 

 area is influenced by several meteorological factors which produce 

 extremes of temperature and precipitation. The area lies in the 

 path of the "prevailing vresterlies" and the cyclonic disturbances 

 that cross the country from the west and southwest. It is also 

 exposed to occasional coastal storms that move up the Atlantic 

 seaboard, some of which are of tropical origin. Significant 

 temperature and precipitation data taken from the United States 

 Weather Bureau Station, Providence, Rhode Island, for the fifty- 

 year period of record, including 195U are summarized in Table 

 C-1. 



C-1 



