﻿HYDROLOGY 
  OF 
  NEW 
  YORK 
  521 
  

  

  does 
  not 
  quite 
  represent 
  the 
  conditions 
  in 
  New 
  York 
  State 
  as 
  

   regards 
  the 
  relation 
  between 
  population 
  and 
  area. 
  If 
  we 
  con- 
  

   sider 
  that 
  there 
  are 
  thirty-seven 
  cities 
  included 
  in 
  the 
  preceding 
  

   area 
  of 
  23,440 
  square 
  miles, 
  in 
  which 
  there 
  is 
  a 
  population 
  of 
  

   4,302,000 
  on 
  about 
  1000 
  square 
  miles, 
  or 
  at 
  the 
  average 
  rate 
  of 
  

   something 
  like 
  4300 
  per 
  square 
  mile, 
  we 
  learn 
  that 
  on 
  the 
  23,440 
  

   square 
  miles 
  the 
  purely 
  rural 
  population 
  may 
  be 
  taken 
  in 
  1900 
  at 
  

   1,904,000, 
  which 
  rural 
  population 
  is 
  again 
  situated 
  on 
  about 
  

   22,400 
  square 
  miles, 
  or 
  at 
  the 
  average 
  rate 
  of 
  about 
  84 
  per 
  square 
  

   mile. 
  

  

  The 
  foregoing 
  review 
  of 
  the 
  statistics 
  of 
  population 
  in 
  New 
  

   York 
  indicates 
  the 
  present 
  tendency 
  to 
  concentrate 
  in 
  cities. 
  Un- 
  

   doubtedly, 
  such 
  tendency 
  will 
  be 
  considerably 
  accentuated 
  in 
  the 
  

   future. 
  The 
  clear 
  tend 
  of 
  perhaps 
  one-half 
  of 
  New 
  York 
  State 
  

   to 
  become 
  a 
  great 
  manufacturing 
  district 
  will 
  lead 
  to 
  this 
  result. 
  

  

  In 
  the 
  year 
  2000 
  it 
  is 
  probable 
  that 
  a 
  relatively 
  larger 
  propor- 
  

   tion 
  of 
  the 
  population 
  will 
  be 
  located 
  in 
  the 
  river 
  valleys 
  than 
  

   at 
  present. 
  Time 
  will 
  not 
  be 
  taken 
  to 
  discuss 
  the 
  conditions 
  in 
  

   each 
  valley, 
  but 
  the 
  Mohawk 
  valley 
  will 
  be 
  briefly 
  referred 
  to 
  as 
  

   illustrating 
  conditions 
  in 
  several 
  of 
  the 
  more 
  important 
  river 
  

   valleys. 
  

  

  The 
  catchment 
  area 
  of 
  Mohawk 
  river 
  is 
  3468 
  square 
  miles 
  and 
  

   the 
  population 
  of 
  nineteen 
  principal 
  towns 
  situated 
  therein 
  was 
  

   in 
  1900, 
  215,539. 
  These 
  towns 
  are 
  all 
  large 
  enough 
  to 
  have 
  sewer- 
  

   age 
  works 
  at 
  the 
  present 
  time. 
  They 
  are 
  manufacturing 
  towns 
  

   and 
  are 
  growing 
  rapidly. 
  If 
  they 
  were 
  to 
  increase 
  in 
  the 
  same 
  

   proportion 
  as 
  the 
  whole 
  State, 
  the 
  population 
  in 
  the 
  year 
  2000 
  

   would 
  be 
  something 
  like 
  600,000, 
  but 
  undoubtedly 
  they 
  will 
  in- 
  

   crease 
  much 
  more 
  rapidly 
  than 
  the 
  whole 
  State 
  and 
  we 
  will 
  not 
  

   be 
  far 
  from 
  right 
  if 
  we 
  take 
  the 
  population 
  in 
  the 
  year 
  2000 
  at 
  

   1.000,000. 
  Moreover, 
  this 
  urban 
  population 
  will 
  not 
  be 
  scattered 
  

   over 
  the 
  whole 
  3468 
  square 
  miles, 
  but 
  will 
  be 
  concentrated 
  on 
  

   perhaps 
  1200 
  square 
  miles. 
  The 
  average 
  population 
  will, 
  there- 
  

   fore, 
  be, 
  aside 
  from 
  the 
  denser 
  population 
  of 
  the 
  cities, 
  over 
  800 
  

   per 
  square 
  mile. 
  Approximately 
  the 
  same 
  average 
  conditions 
  will 
  

   obtain 
  on 
  about 
  20,000 
  square 
  miles 
  of 
  the 
  State. 
  

  

  With 
  an 
  average 
  population 
  of 
  over 
  800 
  per 
  square 
  mile 
  on 
  

   20,000 
  square 
  miles, 
  the 
  20,000 
  square 
  miles 
  will 
  have 
  become 
  

   urban 
  and 
  sub-urban 
  area, 
  with 
  water 
  supply 
  and 
  sewerage 
  in 
  

  

  