﻿HYDROLOGY 
  OF 
  NEW 
  YORK 
  479 
  

  

  Central 
  & 
  Hudson 
  River 
  railroad 
  crossing, 
  four 
  miles 
  east 
  of 
  

   Rome, 
  it 
  is 
  41S.4 
  feet 
  ; 
  at 
  the 
  crossing 
  three 
  miles 
  east 
  of 
  Utica 
  the 
  

   water 
  surface 
  is 
  393.3 
  feet; 
  at 
  the 
  mouth 
  of 
  Schoharie 
  creek 
  it 
  is 
  

   about 
  270 
  feet, 
  and 
  at 
  the 
  New 
  York 
  Central 
  & 
  Hudson 
  River 
  rail- 
  

   road 
  crossing 
  at 
  Schenectady 
  it 
  is 
  214 
  feet. 
  The 
  foregoing 
  tabula- 
  

   tion, 
  which 
  includes 
  streams 
  beloAv 
  Little 
  Falls 
  as 
  well 
  as 
  above, 
  

   indicates 
  that 
  rapid 
  flood 
  delivery 
  is 
  the 
  marked 
  characteristic 
  of 
  

   all 
  the 
  tributary 
  Mohawk 
  streams. 
  

  

  The 
  area 
  of 
  the 
  flats 
  between 
  Little 
  Falls 
  and 
  Rome 
  as 
  computed 
  

   from 
  the 
  United 
  States 
  Geological 
  Survey 
  topographic 
  sheets 
  is 
  

   about 
  21 
  square 
  miles, 
  this 
  area 
  including 
  in 
  effect 
  the 
  flats 
  

   between 
  the 
  400 
  and 
  420 
  contours. 
  Adding 
  thereto 
  somewhat 
  for 
  

   nearly 
  level 
  area 
  above 
  the 
  420 
  contour, 
  we 
  may 
  take 
  the 
  total 
  area 
  

   on 
  which 
  temporary 
  pondage 
  may 
  exist 
  during 
  flood-flows 
  at 
  some- 
  

   thing 
  like 
  30 
  square 
  miles. 
  The 
  effect 
  of 
  this 
  pondage, 
  so 
  long 
  

   as 
  the 
  present 
  natural 
  conditions 
  are 
  maintained, 
  will 
  be 
  to 
  con- 
  

   siderably 
  lengthen 
  the 
  period 
  of 
  flood 
  runoff 
  at 
  Little 
  Falls, 
  thus 
  

   decreasing 
  the 
  maximum 
  at 
  that 
  place. 
  

  

  The 
  Mohawk 
  river 
  flood 
  of 
  August 
  24-26, 
  1898, 
  may 
  be 
  men- 
  

   tioned. 
  On 
  August 
  23 
  and 
  24 
  very 
  heavy 
  thunderstorms 
  occurred 
  

   throughout 
  the 
  central 
  and 
  eastern 
  portions 
  of 
  the 
  State. 
  They 
  

   were 
  specially 
  severe 
  about 
  Utica, 
  with 
  the 
  result, 
  so 
  far 
  as 
  can 
  

   be 
  learned, 
  of 
  yielding 
  a 
  nearly 
  unprecedented 
  summer 
  flood 
  in 
  the 
  

   Mohawk. 
  The 
  Mohawk 
  flats 
  between 
  Herkimer 
  and 
  Rome 
  were 
  

   so 
  far 
  covered 
  with 
  water 
  as 
  to 
  do 
  great 
  damage 
  to 
  standing 
  crops. 
  

   The 
  water 
  was 
  stiir 
  standing 
  on 
  the 
  flats 
  on 
  the 
  afternoon 
  of 
  

   August 
  27, 
  but 
  was 
  down 
  into 
  the 
  channel 
  again 
  on 
  the 
  afternoon 
  

   of 
  the 
  28th. 
  

  

  On 
  August 
  25 
  Nine 
  Mile 
  creek, 
  at 
  Stittsville, 
  flowed 
  approxi- 
  

   mately 
  7820 
  cubic 
  feet 
  per 
  second 
  (catchment, 
  63 
  square 
  miles), 
  

   or 
  at 
  the 
  rate 
  of 
  124.9 
  cubic 
  feet 
  per 
  second 
  per 
  square 
  mile. 
  

  

  On 
  the 
  same 
  date 
  West 
  Canada 
  creek, 
  at 
  Middleville, 
  gave 
  a 
  flow 
  

   of 
  about 
  12,950 
  cubic 
  feet 
  per 
  second 
  (catchment, 
  519 
  square 
  

   miles), 
  or 
  about 
  24.9 
  cubic 
  feet 
  per 
  second 
  per 
  square 
  mile, 
  while 
  

   East 
  Canada 
  creek, 
  at 
  Dolgeville, 
  flowed 
  6330 
  cubic 
  feet 
  per 
  

   second 
  (catchment, 
  256 
  square 
  miles), 
  or 
  at 
  the 
  rate 
  of 
  24.7 
  cubic 
  

   feet 
  per 
  second 
  per 
  square 
  mile. 
  

  

  Probably 
  these 
  flows 
  were 
  for 
  very 
  short 
  periods 
  — 
  perhaps 
  two 
  

   or 
  three 
  hours 
  — 
  because 
  the 
  highest 
  flow 
  over 
  the 
  middle 
  dam 
  at 
  

  

  