﻿HYDROLOGY 
  OP 
  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 
  oisr 
  Catskill 
  creek 
  

  

  Name 
  of 
  Reservoir 
  

  

  11 
  

  

  xiraate 
  ele- 
  

   on 
  of 
  high 
  

   er 
  in 
  feet 
  

   vesea 
  level 
  

  

  xiraate 
  ele- 
  

   on 
  of 
  low 
  

   er 
  in 
  feet 
  

   ve 
  sea 
  level 
  

  

  £ 
  

   'a 
  

  

  o_, 
  © 
  

  

  u 
  © 
  

  

  I* 
  

  

  g 
  .S 
  

  

  «3 
  

  

  A* 
  

  

  © 
  © 
  

  

  S- 
  03 
  ', 
  

  

  © 
  a 
  2 
  

  

  55 
  e8 
  S 
  

   O 
  ac 
  

  

  

  O 
  03 
  

  

  ©•5 
  

   u 
  

  

  ppro 
  

   vat 
  

   wat 
  

   abo 
  

  

  ppro 
  

   vat 
  

   wat 
  

   abo 
  

  

  

  e3 
  S'S 
  

  

  ©«H 
  C 
  

  

  31 
  

  

  o 
  

  

  stims 
  

   1,00 
  

   ava 
  

   ity 
  

  

  

  < 
  

  

  < 
  

  

  < 
  

  

  w 
  

  

  < 
  

  

  EH 
  

  

  H 
  

  

  (1) 
  

  

  (2) 
  

  

  (3) 
  

  

  (4) 
  

  

  (5) 
  

  

  (6) 
  

  

  (?) 
  

  

  (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 
  

   44.1 
  

  

  720 
  

   960 
  

  

  680 
  

   900 
  

  

  90 
  

   100 
  

  

  0.97 
  

   0.44 
  

  

  32, 
  000, 
  000 
  

   24, 
  000, 
  000 
  

  

  250 
  

  

  Preston 
  Hollow 
  .... 
  

  

  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 
  700 
  feet 
  to 
  1840 
  feet 
  in 
  

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

  

  