SW New York Watersheds County Population Centres Rivers, Streams Lakes, Reservoirs                                          
Allegheny River     Conewango Creek (1,406 river/stream miles) Allegheny Reservoir (10,987 acres)                                        
Map of NYS identifying the Allegheny Watershed
Allegany (pop 46,091)[1] Cassadaga Creek (586 miles, within Conewango Watershed) Chautauqua Lake (13,427 acres)
Wellsville, pop[2] Olean Creek (487 miles)
Great Valley Creek (357 miles)
Cattaraugus (see Niagara River WS) French Creek (186 miles)
Olean (1854) pop 13,437[3]
Chautauqua (see Niagara River WS)
Jamestown, pop 29,058[4]
https://www.dec.ny.gov/lands/48376.html
The Allegheny River originates in north central Pennsylvania and flows west across southwestern New York State.  Some of the larger tributaries of this watershed join the Allegheny River outside New York State and eventually empty into the Gulf of Mexico.
Headwaters of the Ohio River Basin (204,000 sq miles)
empties into Gulf of Mexico
Chautauqua Lake Watershed Management Plan 
population in Allegheny River WS - approx 46091
Chemung River                                                     
Chemung, pop 83,456[5] Elmira (1808) pop 27,054[6] Cohocton River (1,099 river miles ) Lamoka Lake/Mill Pond (825 acres)
Map of NYS identifying the Upper Susquehanna River Watershed,Map of NYS identifying the Allegheny Watershed
Steuben, pop 95,379[7] Corning (1980) pop 10,538[8] Tioga/Canisteo Rivers (979 miles) Waneta Lake (781 acres)
Hornell (1790) pop 8302[9] Almond Lake (480 acres)
Schuyler, pop 17,807[10]
Allegany (see Allegheny River WS)
Yates, pop 24,913[11]
 Ontario  (see Genesee River WS)
 Livingston (see Genesee River WS)
https://www.dec.ny.gov/lands/48020.html
https://www.dec.ny.gov/lands/48373.html
The Chemung River Watershed (2,600 square miles) straddles the border between New York and Pennsylvania. The waters of the Chemung River flow across the western portion of Southern Tier of New York State before joining the Susquehanna River and eventually emptying into the Chesapeake Bay. The Chemung Watershed represents about one-eighth of the larger Susquehanna River Basin.
Population in Chemung River WS 221555
Map of NYS identifying the Upper Susquehanna River Watershed
Susquehanna River
                                                   
Broome, pop 190,488[12] Binghamton, pop 44,399[13] Chenango River (2,796 river/stream miles) Otsego Lake (4,083 lake/reservoir acres)
Chenango, pop 47,207[14] Tioughnioga River (1,293 miles, within the Chenango River Watershed) Canadarago Lake (1,882 acres)
Cortland, pop 47,581[15] Unadilla River (935 miles) Whitney Point Lake/Reservoir (1,235 acres)
Otsego, pop 59,493[16] Oneonta, pop 13, 907[17] Owego Creek (766 miles)
Tioga, pop 48,203[18]
Delaware (see Delaware River WS) Corning, Lockheed Martin
Portions of southern Madison and eastern Chemung
https://www.dec.ny.gov/lands/48020.html
population in Susquehanna River WS 392972
Population in SW Watersheds 660618                                                  
[1]
Owner:
https://www.census.gov/quickfacts/fact/table/alleganycountynewyork/PST045219
Industry:
Allegany:
1. Allegany Scrap Inc
2. American Woodmark Corporation
3. AMM Corporation
4. Archway Station
5. Bill Miller Equipment Sales
6. Cumberland Pipe and Steel
7. Conduent
8. CSX Transportation
9. Airicon Engineering Inc
10. Cumberland Concrete
https://alleganyworks.org/major-employers/
[2]
Owner:
Wastewater:
http://wellsvilleny.com/  www.alleganyco.com

Water/Wastewater Department

Dana Harris, Water Plant Supervisor    585-596-1730
Mike Smith, Wastewater Plant Supervisor    585-596-1725
________________________________________
WATER
The Village of Wellsville operates a Water Treatment Plant and distribution system.  The primary drinking water source is the Genesee River that flows up out of Pennsylvania and the rural areas of New York to the south.  This water source is extremely good and plentiful.  The Village Water Treatment Plant started treating water for the Village on June 28, 1990.  The plant is rated for 2.5 million gallons per day.  The average daily consumption is currently at 900,000 gallons.  The Treatment Plant has an excellent series of web pages of its own that can be accessed at http://www.wellsvillewater.com.
http://wellsvilleny.com/pdfs/2020/Wellsville%20WWTP%20-%20Environmental%20Report%204.9.20.pdf
[3]
Owner:
https://www.census.gov/quickfacts/fact/table/oleancitynewyork/PST045219
[4]
Owner:
https://www.census.gov/quickfacts/fact/table/jamestowncitynewyork/PST045219
Mayor Edward Sundquist Phone: (716) 483-7600
[5]
Owner:
https://www.census.gov/quickfacts/fact/table/chemungcountynewyork/PST045219
Industry:
1. Anchor Glass Container Corporation
2. General Revenue Corporation
3. Cameron Manufacturing Design
4. CVS Caremark Corporation
5. Hardinged Incorporated
6. The Hilliard Corporation
7. Synthes USA
8. Howell Packaging
9. CAF USA
10. Emhart Glass
https://steg.com/living-here/employers/
[6]
Owner:
https://www.census.gov/quickfacts/fact/table/elmiracitynewyork/PST045219
[7]
Owner:
https://www.census.gov/quickfacts/fact/table/steubencountynewyork/PST045219
[8]
Owner:
https://www.census.gov/quickfacts/fact/table/corningcitynewyork/PST045219
[9]
Owner:
https://www.census.gov/quickfacts/fact/table/hornellcitynewyork/PST045219
[10]
Owner:
https://www.census.gov/quickfacts/fact/table/schuylercountynewyork,NY/PST045219
[11]
Owner:
https://www.census.gov/quickfacts/fact/table/yatescountynewyork/PST045219
[12]
Owner:
https://www.census.gov/quickfacts/broomecountynewyork
Industry
Broome:
1. Binghamton University
2. United Health Services Inc
3. Lockheed Martin
4. Broome County Government
5. Lourdes Hospital
6. BAE Systems
7. I3
8. Dicks Sporting Goods
https://theagency-ny.com/invest-in-broome-county
[13]
Owner:
https://www.census.gov/quickfacts/fact/table/binghamtoncitynewyork/PST045219
[14]
Owner:
https://www.census.gov/quickfacts/fact/table/chenangocountynewyork/PST045219
Industry:
Chenango Employers
1. Chenango Memorial Hospital
2. Chobani
3. NBT Bank
4. Norwich Pharma Services
5. The Raymond Corp
https://www.statebook.com/site/commerce-chenango-ny/industries/
[15]
Owner:
https://www.census.gov/quickfacts/fact/table/cortlandcountynewyork/PST045219
Industry:
Cortland Employers
1. SUNY Cortland
2. Guthrie Cortland Medical Services
3. Cortland City School District
4. Cortland County Government
5. Marietta Corporation
6. Pall Trinity / Danaher
7. Intertek Testing Services
8. J.M Murray Centre
9. Crown Centre for Nursing and Rehabilitation
10. Cortland Asphalt
https://cortlandbusiness.com/doing-business-here/major-employers/
[16]
Owner:
https://www.census.gov/quickfacts/fact/table/otsegocountynewyork/PST045219

Industry:
Otsego Employers
1. Corning Inc
2. Unison Industries
3. IBM
4. Lockheed Martin
5. Raymond Corporation
6. Universal Instruments
http://otsegonow.com/sites-and-buildings/county-overview/#
[17]
Owner:
https://www.census.gov/quickfacts/fact/table/oneontacitynewyork/PST045219
[18]
Owner:
https://www.census.gov/quickfacts/fact/table/tiogacountynewyork/PST045219

Industry:
Tioga:
1. https://www.tiogacountyny.com/departments/personnel-civil-service/