2019 New York Laws
GMU - General Municipal
Article 5 - Powers, Limitations and Liabilities
72-L - Navigation and Flood Control Improvements in Cooperation With the Federal Government.

§  72-l. Navigation and flood control improvements in cooperation with
  the federal government. Any municipal  corporation  acting  through  its
  governing  board  or other appropriate authority may; (1) cooperate with
  the  federal  government  as  authorized  in  the  rivers  and   harbors
  improvements  act  of March second, nineteen hundred forty-five, and any
  federal laws amendatory and  supplemental  thereto  in  connection  with
  works   of   improvement   for  navigation  and  flood  control  or  the
  improvement,  development,  dredging,  utilization  or  control  of  the
  watersheds  and  waterways within their boundaries; (2) contribute up to
  one-half of the cost of such improvements as provided under such federal
  laws and provide the funds required therefor by the use of  any  surplus
  moneys  or  budget  funds available for such improvements or may provide
  same pursuant to the provisions of the local finance  law;  (3)  furnish
  free  of  cost  to the United States all lands, easements, rights of way
  and spoil disposal areas for new work, dredged materials and  subsequent
  maintenance  as  required  under  such  federal  laws,  and  acquire the
  necessary  real  property  for  such  purpose  in  accordance  with  the
  provisions  of  any appropriate general, special or local law applicable
  to the acquisition of real property by such municipal  corporation;  (4)
  contract  with  the  federal government including (a) agreements to hold
  and save the United States free from claims for damages  resulting  from
  the  execution  and maintenance of such improvements, and (b) such other
  provisions, covenants and conditions as the federal agency  may  require
  for  effectuating  the  federal  purposes;  (5) (a) apply for and accept
  grants or other financial assistance,  under  existing  laws,  from  the
  state  or county and (b) make agreements to hold and save such state and
  county free from claims for damages resulting  from  the  execution  and
  maintenance   of  such  improvements  and  (c)  such  other  provisions,
  covenants and  conditions  as  the  state  or  county  may  require  for
  effectuating such purposes.