U2 



FLOODS AT THE MANCHESTER WATERWORKS 



course of the year was on the 7th and 8th October, the 

 anniversary of the destructive flood of the previous year, and 

 (within a few daj^s) of the Blackburn flood of 1848. 



The year 1851 was still more below the average, the rain at 

 Crowden being only 40^ inches. In this year the only 

 heavy flood occurred about the 8th and 9th June. 



The fall of rain, as registered at the various rain gauges 

 in the district since the end of 1847, up to which time they 

 are recorded in my last paper to the Society, is as fol- 

 lows :• — 



