8 



of the deteriBination of the grotandHmter catchments The 

 fern wells in the doubtf tal area between the Nassau Cotrnty 

 line and ELwood indicate that the groimd-water stonmit is 

 not far from the siarface divide of the southerly i!ioraine#«» 

 (Underscoring is om^s*) 



mP OF 1955 BY IIGGIN 

 A contotir macp of the water table in Brooklyn and Queens in lay 19S5 was 

 presented by Wiggin in connection with hearings before the Water Power and Con-- 

 trol Commission on the application by the City of New lork alrea<^ referred to» 

 This was a joint effort by consulting engineers for the objecting water--supply 

 coapanies and officials of the New lork Department of Water S-upply^ Gas and 

 Electricity. By caag)aring this map with the 1905 contours and their extension 

 into Brooklyn^ Wiggin estJjaiated the aaaotmt of wat€r tiiat had been withdrasm from 

 storage in that critical area during the intervening 50 years* Wiggings nap of 

 1955 was published by taase (9) in 1954 and by Thon5>son, Wells^ and Blank (10) 

 in 1957* 



m? OF 1956 BY MEW YORK STATE WATER POWER AND CONTROL COlfflgSSION 

 In Bulletin (M-^Z of this series (11), published by the Water Power and Con- 

 trol Cofflffiission in 1957, Sutw gave a water-table map f cr 1956 with a five-foot 

 contour interval, covering again the area from Eiverhead westward* To obtain 

 ite data numerous wells were measiired, soise of them after relatively short 

 periods of recovery • In msjajf cases it was necessaiy to estimate eLevatiois from 

 topographic maps ( (11), p« 51), but despite this lack of refinemenfc Ite 1956 

 contour map was of value in indicating iicportant changes, even in the short 

 period from 1955 to 1956, particularly in the critical area of Brooklyn, 



In comnienting on the state of knowledge at the time of the hearings on the 

 application of the City of New lork in 1955 Stifcer stated (pp, 48, SO) «A11 along 



