HYDROLOGY OF NEW YORK 



705 



000.000 .gallons (2,600.000.000 cubic feet). As in the case of 

 Esopus creek, the safe yield is estimated by the writer at 500.000 

 gallons per square mile per day. 



The East Durham dam would be of masonry, with a spillway 

 over its crest— the balance of the dams on Catskill creek would 

 be of earth, with masonry cores, with spillways cut in the rock 

 sides of the valley. 



In constructing the system of reservoirs on Catskill creek the 

 village of Oak Hill would be entirely removed. Aside from Green- 

 ville, consisting of eight or ten houses, no other towns are inter- 

 fered with in this valley, but sewage purification works have been 

 provided for East Durham. Durham. Potter Hollow. Cooksburg. 

 Preston Hollow. Livingstonville and Franklinton. The water 

 powers on Catskill creek above East Durham are of little im- 

 portance, and on the lower creek the most important power is 

 at Leeds, where there is head sufficient to develop 500 horsepower 

 with low-water flow. 



Table No. 90 gives the particulars of the storage reservoirs on 

 Catskill creek. 



Table No. 90 — Proposed storage reservoirs ox Catskill creek 



























© c 35 « 





11 



5 



z 



— 



X 



§§ 



Name of Reservoir 



\\ 



•— — 



- 7. 



So Jj > 



OS " = m 



~ r. 



m 



•_ 



'I'll 



-~ - 



1 



l,oo j.i ii hi (r< 

 available c 





< 



< 



< 





< 











(2) 



(3) 



(4) 



(5) 



(6) 



(7) 



(8) 



Greenville 



30.4 



680 



650 



85 



0.45 



13.500.000 





$240 



Lower East Durham 



21.8 



540 



500 



60 



0.33 



11.700.000 





255 



Upper East Durham 



43.3 



620 



580 



100 



0.89 



27. 100. 000 





245 



Oak Hill 



52.4 



720 



680 



90 



0.97 



32.000,000 





250 



Preston Hollow. . . . 



44.1 



960 



900 



100 



0.44 



24, 000, 000 





245 



Total 



192.0 









3.08 



108, 300, 000 

















The area of the Schoharie catchment above Gilboa is about 

 305 square miles. This is as much of the area as could be eco- 

 nomically developed for the supply of New York. 



The dams of the proposed Schoharie creek reservoirs vary from 

 50 feet to 110 feet in hight and from TOO feet to 1840 feet in 

 length. They are located at the following points: At Gilboa ; 



