﻿WATEE-POWEK 
  DEVELOPMENT 
  IN 
  THE 
  MISSISSIPPI. 
  25 
  

  

  The 
  problems 
  here 
  outlined 
  are 
  too 
  extensive 
  in 
  scope 
  to 
  be 
  solved 
  

   in 
  their 
  entirety 
  within 
  the 
  available 
  resources 
  of 
  the 
  Bureau, 
  but 
  

   the 
  hope 
  may 
  be 
  expressed 
  that 
  the 
  lesson 
  of 
  this 
  occasion 
  may 
  make 
  

   so 
  wide 
  an 
  impression 
  that, 
  should 
  the 
  fortune 
  of 
  time 
  offer 
  another 
  

   situation 
  of 
  like 
  significance, 
  the 
  possibilities 
  of 
  the 
  Bureau's 
  service 
  

   may 
  have 
  been 
  so 
  anticipated 
  that 
  a 
  condition 
  of 
  preparedness 
  shall 
  

   have 
  been 
  created. 
  The 
  effective 
  conservation 
  and 
  development 
  of 
  

   the 
  fishery 
  resources 
  is 
  a 
  not 
  unimportant 
  phase 
  of 
  the 
  provision 
  for 
  

   the 
  future 
  welfare 
  of 
  the 
  countrv. 
  

  

  Appendix. 
  — 
  The 
  Problem 
  of 
  the 
  Migration 
  of 
  River 
  Herring. 
  

  

  The 
  following 
  brief 
  account 
  of 
  observations 
  made 
  chiefly 
  during 
  the 
  

   year 
  1914 
  are 
  of 
  interest 
  in 
  this 
  connection. 
  While 
  it 
  was 
  not 
  found 
  

   feasible 
  to 
  detail 
  anyone 
  for 
  continuous 
  study 
  of 
  the 
  succession 
  and 
  

   movements 
  of 
  fishes, 
  as 
  would 
  have 
  been 
  desirable, 
  some 
  occasional 
  

   visits 
  could 
  be 
  made, 
  which 
  were 
  not 
  without 
  value. 
  

  

  The 
  writer 
  visited 
  Keokuk 
  April 
  15, 
  1914, 
  when 
  the 
  water 
  was 
  still 
  

   cool, 
  and 
  practically 
  no 
  movement 
  of 
  fishes 
  had 
  occurred. 
  It 
  was 
  

   learned 
  that 
  the 
  river 
  immediately 
  below 
  the 
  dam 
  had 
  remained 
  open 
  

   all 
  the 
  winter, 
  although 
  as 
  a 
  whole 
  below 
  the 
  bridge 
  at 
  Keokuk 
  and 
  

   above 
  the 
  dam 
  it 
  had 
  been 
  frozen 
  over 
  mth 
  thick 
  ice. 
  In 
  the 
  exposed 
  

   water 
  the 
  wall-eye 
  or 
  "jack 
  salmon" 
  had 
  been 
  present 
  all 
  the 
  winter 
  

   and 
  fished 
  abundantly 
  with 
  hook 
  and 
  line. 
  Practically 
  the 
  only 
  fish 
  

   then 
  in 
  evidence 
  were 
  perch 
  and 
  crappie 
  in 
  the 
  slues. 
  A 
  few 
  perch 
  

   were 
  noted 
  in 
  the 
  lock, 
  and 
  the 
  lock 
  master 
  stated 
  that 
  a 
  large 
  

   number 
  had 
  been 
  taken 
  at 
  the 
  first 
  locking, 
  about 
  April 
  10. 
  

  

  A 
  local 
  informant, 
  Mr. 
  Joe 
  MacAdams, 
  was 
  requested 
  to 
  write 
  me 
  

   of 
  the 
  first 
  appearance 
  of 
  the 
  herring. 
  After 
  a 
  card 
  from 
  him, 
  I 
  

   visited 
  Keokuk 
  again 
  April 
  29. 
  He 
  stated 
  that 
  the 
  herring 
  first 
  ap- 
  

   peared 
  April 
  20, 
  and 
  that 
  they 
  became 
  enormously 
  abundant 
  within 
  

   a 
  few 
  days; 
  on 
  the 
  27th, 
  according 
  to 
  several 
  informants, 
  during 
  a 
  

   warm 
  day, 
  one 
  could 
  at 
  any 
  moment 
  see 
  hundreds 
  of 
  them 
  breaking 
  

   the 
  water 
  in 
  every 
  part 
  of 
  the 
  river 
  below 
  the 
  plant. 
  

  

  The 
  day 
  of 
  my 
  arrival, 
  April 
  29, 
  was 
  cold, 
  windy, 
  and 
  cloudy, 
  and 
  

   at 
  first 
  view 
  very 
  few 
  herring 
  were 
  observable. 
  After 
  closer 
  observa- 
  

   tion, 
  however, 
  they 
  were 
  seen 
  to 
  be 
  present 
  in 
  immense 
  numbers, 
  

   and 
  congregated 
  in 
  certain 
  locations 
  exactly 
  as 
  had 
  been 
  predicted. 
  

   (See 
  p. 
  20 
  above.) 
  A 
  large 
  number 
  were 
  seen 
  just 
  below 
  the 
  short 
  sec- 
  

   tion 
  of 
  dam 
  between 
  the 
  upper 
  end 
  of 
  the 
  lock 
  and 
  the 
  lower 
  end 
  of 
  the 
  

   power 
  house 
  ; 
  many 
  were 
  observed 
  along 
  the 
  outer 
  wall 
  of 
  the 
  tail-race, 
  

   but 
  in 
  the 
  angle 
  between 
  the 
  power 
  house 
  and 
  the 
  dam 
  and 
  from 
  this 
  

   point 
  to 
  the 
  nearest 
  open 
  spillway, 
  a 
  short 
  distance 
  away, 
  the 
  her- 
  

   ring 
  were 
  fairly 
  massed. 
  Such 
  a 
  close 
  aggregation 
  of 
  fish 
  can 
  rarely 
  

   be 
  seen 
  in 
  fresh 
  water. 
  They 
  had 
  evidently 
  followed 
  up 
  along 
  the 
  

   outer 
  edge 
  of 
  the 
  tail-race 
  until 
  they 
  could 
  go 
  no 
  farther. 
  Agam, 
  on 
  

  

  