Central NYS Watersheds (15.7M) County (Borough) Population Centres Rivers, Streams Lakes, Reservoirs Estuary              
Mohawk River                          
Montgomery, pop 49,221[1] Fonda (village) <5000
Schoharie County, pop 30,999[2] Schoharie (town) <5000 Schoharie Creek (1,650 river miles) Hinkley Reservoir (2,684 acres) Estuary Waters: 78,322 acres of estuary along the entire 153 mile length of the Lower Hudson.
Map of NYS identifying the Mohawk River Watershed
Schenectady, pop 155,299[3] Schenectady, pop 65, 273[4] West Canada Creek (1,165 miles) Delta Reservoir (2.376 acres)
Greene, pop 47,188[5] Catskill, (town) 11,334[6] East Canada Creek (515 miles) Peck Lake (1,426 acres)
Fulton, pop 53,383[7] Johnstown (city) 8230[8] Schoharie Reservoir (1,132 acres)
Herkimer, pop 61,319[9] Herkimer(Village), pop 7262[10]
Oneida, pop 228,671[11] Utica, pop 59,750[12]
Smaller parts of Albany, Saratoga, Delaware, 
Otsego, Hamilton, Madison and Lewis Counties.
https://www.dec.ny.gov/lands/48041.html
Mohwak River Watershed Plan (Outside Link)
Population in Mohawk River Watershed 626080
Upper Hudson River                          
Saratoga, pop 229,863[13] Saratoga Springs, pop 28, 212[14] Sacandaga River (1,740 river/stream miles) Great Sacandaga Lake (26,800 lake/reservoir acres)
Map of NYS identifying the Upper Hudson River Watershed
Washington, pop 61,204[15] Schroon River (822 miles) Indian Lake (4,465 acres)
Warren pop 63,944[16] Glens Falls, pop 14,262[17] Fish Creek (551 miles) Schroon Lake (4,130 acres)
Essex, pop 36,885[18] Hoosic River (533 miles) Saratoga Lake (4,030 acres)
Hamilton, pop 4416[19] Batten Kill (334 miles)
Portions of northern Rensselaer and northeastern Fulton Counties.
Small parts of Greene and Chenango Counties.
https://www.dec.ny.gov/lands/48019.html
Population in Upper Hudson River Watershed 396312
Lower Hudson River                          
Rondout/Wallkill Rivers (1,584 river/stream miles) Ashokan Reservoir (8,060 lake/reservoir acres)
Map of NYS identifying the Lower Hudson River Watershed
Putnam, pop 98,890[20] Stockport/Kinderhook Creeks (1,077 miles) Rondout Reservoir (2,024 acres)
Orange, pop 384,940[21] Catskill Creek (927 miles) New Croton Reservoir (1,949 acres)
Ulster, pop 177,573[22] Kingston, pop 22,793[23]
Columbia, pop 59, 461[24]
Albany, pop 305,506[25] Albany (1686), pop 96,460[26]
Dutchess, pop 294, 218[27]
Greene (see Mohawk River WS)
https://www.dec.ny.gov/lands/53749.html Rensselaer, pop 158,714[28] Esopus Creek (631 miles) Alcove Reservoir (1,363 acres)
Smaller parts of New York (Manhattan), Bronx,  New York Croton River (607 miles) Cross River Reservoir (899 acres)
Rockland, Sullivan, Schoharie and Schenectady Counties. Muscoot/Upper New Croton Reservoir (770 acres)
Westchester (see Long Island Sound WS)
Population in Lower Hudson River watershed 1479302
Delaware River                          
Sullivan, pop 75,432[29] Monticello (village), pop 6385[30] E Branch Delaware River (1,285 river/stream miles) Pepacton Reservoir (5,185 lake/reservoir acres)
Map of NYS identifying the Delaware River Watershed
Fallsburg, (town) pop 13,023[31] W Branch Delaware River (981 miles) Cannonsville Reservoir (4,605 acres)
Delaware, pop 44,135[32] Delhi, <5000 4914 Neversink River (626 miles) Neversink Reservoir (1,469 acres)
Orange, pop 384,940[33] Port Jervis, pop 8558[34] Mongaup River (344 miles)
 Ulster, pop 177,573[35]
Broome (see Susquehanna) AstraZeneca
Small parts of Schuyler, Tompkins, Onondaga, Oneida, Herkimer and Schoharie
https://www.dec.ny.gov/lands/48372.html
population in Delaware River WS 682080
Housatonic                          
Map of NYS identifying the Housatonic River Watershed
Small part of eastern Dutchess County Tenmile River (312 river miles) Indian Lake (196 acres)
Small part of eastern Columbia County Austerlitz, pop 1591 Green River Watershed (46 miles) Swift/Crane Ponds (135 acres)
https://www.dec.ny.gov/lands/48370.html
Ramapo                          
Rockland County, pop 329,800[36] Ramapo, pop 136,800 Ramapo River (155 river miles) Greenwood Lake (1,075 acres within New York State)
Map of NYS identifying the Ramapo River Watershed
Pearl River, pop 15,880 Hackensack River (74 miles) DeForest Lake (720 acres)
Orange County (see Lower Hudson) Greenwood Lake, pop 3083
https://www.dec.ny.gov/lands/53761.html
Population in Ramapo watershed  329800 Mann V Ford Documentary
https://dashboard.waterdata.usgs.gov/app/nwd/?region=lower48&aoi=default
Atlantic Ocean/Long Island Sound                          
Kings (Brooklyn), pop 2.58 million[37] Bronx River (63 river/stream miles) 63 river/stream Kensico Reservoir (2,503 lake/reservoir acres)
Queens, pop 2.28 million[38] Mamaroneck River (43 miles) Lake Ronkonkoma (226 acres)
Map of NYS identifying the Atlantic/Long Island Sound Watershed
Nassau, pop 1.36 million[39] Hempstead, 55,113 Mianus River (43 miles)
Suffolk, pop 1.48 million[40] Huntington, pop 201,500 Peconic River (29 miles)
Babylon
Brookhaven
East Hampton
New York (Manhattan), pop 1.63 million[41] Manhattan pop 1.63 million
Bronx, pop 1.42 million[42]
 Westchester, pop 967,506[43] White Plains, pop 58k
Mt Vernon, pop 67k[44]
Richmond (Staten Island) 476,143[45]
https://www.dec.ny.gov/lands/48375.html
The Contamination Assessment and Reduction Project (CARP)[46] Yonkers, pop 200k
New Rochelle (1889), pop 77k
population in Atlantic Ocean/Long Island Sound watershed - approx 12193649
Population In Central Watersheds 15707223                        
[1]
Owner:
https://www.census.gov/quickfacts/montgomerycountynewyork
[2]
Owner:
https://www.census.gov/quickfacts/fact/table/schohariecountynewyork/PST045219
[3]
Owner:
https://www.census.gov/quickfacts/fact/table/schenectadycountynewyork,US/PST045219
[4]
Owner:
https://www.census.gov/quickfacts/schenectadycitynewyork
[5]
Owner:
https://www.census.gov/quickfacts/greenecountynewyork
[6]
Owner:
https://www.census.gov/quickfacts/fact/table/catskilltowngreenecountynewyork/PST045219
[7]
Owner:
https://www.census.gov/quickfacts/fact/table/fultoncountynewyork/PST045219
[8]
Owner:
https://www.census.gov/quickfacts/fact/table/johnstowncitynewyork/PST045219
[9]
Owner:
https://www.census.gov/quickfacts/fact/table/herkimercountynewyork/PST045219
[10]
Owner:
Zip 13350
https://www.census.gov/quickfacts/fact/table/herkimervillagenewyork/PST045219
[11]
Owner:
https://www.census.gov/quickfacts/oneidacountynewyork
[12]
Owner:
https://www.census.gov/quickfacts/fact/table/uticacitynewyork/LND110210
[13]
Owner:
https://www.census.gov/quickfacts/fact/table/saratogacountynewyork/PST045219
[14]
Owner:
https://www.census.gov/quickfacts/fact/table/saratogaspringscitynewyork/PST045219
[15]
Owner:
https://www.census.gov/quickfacts/fact/table/washingtoncountynewyork/PST045219
[16]
Owner:
https://www.census.gov/quickfacts/fact/table/warrencountynewyork/PST045219
[17]
Owner:
https://www.census.gov/quickfacts/glensfallscitynewyork
[18]
Owner:
https://www.census.gov/quickfacts/fact/table/essexcountynewyork/PST045219
[19]
Owner:
https://www.census.gov/quickfacts/hamiltoncountynewyork
[20]
Owner:
https://www.census.gov/quickfacts/putnamcountynewyork
[21]
Owner:
[22]
Owner:
https://www.census.gov/quickfacts/fact/table/ulstercountynewyork/PST045219
[23]
Owner:
https://www.census.gov/quickfacts/kingstoncitynewyork
[24]
Owner:
https://www.census.gov/quickfacts/columbiacountynewyork
[25]
Owner:
https://www.census.gov/quickfacts/fact/table/albanycountynewyork/PST045219
[26]
Owner:
https://www.census.gov/quickfacts/albanycitynewyork
https://albanyny.gov/
Water Treatment Plant:
https://albanyny.gov/764/Water-Treatment-Plant
[27]
Owner:
https://www.census.gov/quickfacts/fact/table/dutchesscountynewyork/PST045219
[28]
Owner:
https://www.census.gov/quickfacts/rensselaercountynewyork
[29]
Owner:
https://www.census.gov/quickfacts/fact/table/delawarecountynewyork/PST045219
Water Safety administered by Monticello District Environmenal Health (845) 794-2045
[30]
Owner:
https://www.census.gov/quickfacts/fact/table/monticellovillagenewyork,US/PST045219
[31]
Owner:
https://www.census.gov/quickfacts/fact/table/fallsburgtownsullivancountynewyork,US/PST045219
[32]
Owner:
https://www.census.gov/quickfacts/fact/table/delawarecountynewyork/PST045219
Industry:
Delaware Employers
1. Dover Airforce Base
2. Christiana care Health System
3. Christiana Hospital
4. Mountaire Farms of Delaware
5. Amazon Fulfilment Centre
6. Allen Harim Foods
7. AstraZeneca Pharmaceuticals
8. Division of Aging and Adult
9. Casino at Delaware Park
10. James T Vaughn Correctional
https://www.careerinfonet.org/oview6.asp?id=&soccode=&stfips=10&from=State&nodeid=12
[33]
Owner:
https://www.census.gov/quickfacts/fact/table/orangecountynewyork/PST045219
[34]
Owner:
https://www.census.gov/quickfacts/fact/table/portjerviscitynewyork,US/PST045219
[35]
Owner:
https://www.census.gov/quickfacts/fact/table/ulstercountynewyork/PST045219
[36]
Owner:
https://www.census.gov/quickfacts/fact/table/rocklandcountynewyork/PST045219
[37]
Owner:
https://www.census.gov/quickfacts/kingscountybrooklynboroughnewyork
[38]
Owner:
https://www.census.gov/quickfacts/fact/table/queenscountyqueensboroughnewyork/POP645219
[39]
Owner:
https://www.census.gov/quickfacts/nassaucountynewyork

Industry:
Iridium Industries Inc(plastics)  Great Neck, NY  516-504-9700
[40]
Owner:
https://www.census.gov/quickfacts/fact/table/suffolkcountynewyork/HCN010212
[41]
Owner:
https://www.census.gov/quickfacts/newyorkcountymanhattanboroughnewyork
[42]
Owner:
https://www.census.gov/quickfacts/bronxcountybronxboroughnewyork
[43]
Owner:
https://www.census.gov/quickfacts/fact/table/westchestercountynewyork/PST045219
[44]
Owner:
City of Mount Vernon Mayor Ms. Shawyn (shawn) Patterson Howard
Board of Water Supply Commissioner Carlton Spruill; Supt. John Arena


Source of Water Supply   The  Board  of  Water  Supply  receives  all  its  water  from  New  York  City’s  Catskill  /  Delaware  reservoir   system,   an   unfiltered   surface   supply   located in a protected watershed area in upstate New York west of the Hudson River.  New York City's Department of  Environmental  Protection  (DEP)  oversees the operation, maintenance, and protection of their reservoir system.  It consists of 19 reservoirs and  three  controlled  lakes,  all  of  which  allow  for  maximum   flexibility   in   delivering   the   highest   quality water possible.  The water travels through the Catskill  and  Delaware  Aqueducts  to  the  Kensico  Reservoir,   where   it   is   blended   under   normal   operating   conditions.      This   blending   enhances   overall  water  quality.    The  Kensico  Reservoir  also  acts  as  a  large  settling  basin,  since  it  takes  from  twenty to thirty days for the water to travel from one end  to  the  other.    During  this  time,  any  particulate  matter  or  "turbidity"  from  spring  run-off  or  heavy  rains can settle out in the reservoir, thereby clarifying the water.  From Kensico, the water continues south, entering Mount Vernon at two locations.

The  first  location  takes  its  water  from  the  48inch Kensico Line which is owned and operated by Westchester County Water District #1.  Water enters the   48  inch  Kensico   Line   from   the   Delaware   Aqueduct  at  Shaft  22  in  Yonkers.    Under  certain  operating  conditions,  water  can  enter  the  Kensico  Line  at  Kensico  Reservoir  and  be  delivered  all  the  way south to Mount Vernon.The second entry point for Mount Vernon is in south  central  Yonkers.    Water  from  the  Catskill  Aqueduct passes into a large transmission main justbefore   reaching   Hillview  Reservoir.      It   travels   through Yonkers and into Mount Vernon.From these entry points, the water enters the 106 miles of distribution piping to serve Mount Vernon’s 67,292  residents  through  10,160  metered  service  connections.    In 2020 alone, 2.72  billion  gallons  of  water coursed through the city’s mains.  The average daily  flow  was  7.42  million  gallons  (MG)  and  the  highest  single  day  was  9.07  mg.  Unaccounted  for  water  (resulting  from  service leaks  and  main  breaks,  fire  fighting,  hydrant  flushing,  under-registration  of  meters, and unauthorized use) comprised 7.1 % of the total.  The industry average is 25 to 35% unaccounted for water. Water Treatment  The water is disinfected with chlorine and ultraviolet  light.Ultraviolet  light  treatment  involves   passing   the   water   through   special   lamps  that  emit  ultraviolet  radiation.    The  UV  waves inactivate harmful organisms.  The  water  is  also  fluoridated  (to  protect  against tooth decay) by New York City DEP at Kensico Reservoir Shaft 18.

Westchester County Dept of Health and/or the EPA’s Safe Drinking Water Hotline 800-426-4791
[45]
Owner:
https://www.census.gov/quickfacts/richmondcountystatenislandboroughnewyork
[46]
Owner:
A landmark project bringing together federal, state and non-government partners to identify and reduce contamination by PCBs, dioxin and other toxic chemicals within the NY/NJ Harbor Estuary, particularly as it relates to dredged material management.