New York River Map showing major rivers in New York, River start and end point, county boundaries.
River Map of New York State
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Rivers and Waterways in New York
New York’s river systems flow through mountains, valleys, and coastal plains, with water draining into the Atlantic Ocean, the Great Lakes, and the St. Lawrence River system. The Hudson River is the state’s most prominent waterway, while western rivers connect to Lake Erie and Lake Ontario. Northern regions drain into the St. Lawrence River, and southern rivers flow toward the Atlantic. The state also has many lakes and reservoirs that support drinking water, transportation, recreation, and hydropower.
Major Rivers in New York
| River | Length (Approx.) | Region | Flows Into |
|---|---|---|---|
| Hudson River | 315 mi | East | Atlantic Ocean |
| St. Lawrence River | 744 mi | North | Atlantic Ocean |
| Mohawk River | 149 mi | Central | Hudson River |
| Genesee River | 157 mi | West | Lake Ontario |
| Niagara River | 36 mi | West | Lake Ontario |
| Susquehanna River | 444 mi | South | Chesapeake Bay |
| Delaware River | 301 mi | South | Atlantic Ocean |
| Oswego River | 23 mi | Central | Lake Ontario |
| Black River | 125 mi | North | Lake Ontario |
| Raquette River | 146 mi | North | St. Lawrence River |
| Oswegatchie River | 137 mi | North | St. Lawrence River |
| Saranac River | 81 mi | North | Lake Champlain |
| Esopus Creek | 65 mi | East | Hudson River |
| Rondout Creek | 63 mi | East | Hudson River |
| Chemung River | 45 mi | South | Susquehanna River |
| Allegheny River | 325 mi | Southwest | Ohio River |
| Tonawanda Creek | 78 mi | West | Niagara River |
| Wallkill River | 88 mi | South | Hudson River |
Major Lakes in New York
| Lake | Type | Region |
|---|---|---|
| Lake Ontario | Natural lake | North |
| Lake Erie | Natural lake | West |
| Lake Champlain | Natural lake | North |
| Oneida Lake | Natural lake | Central |
| Seneca Lake | Natural lake | Central |
| Cayuga Lake | Natural lake | Central |
| Lake George | Natural lake | East |
| Great Sacandaga Lake | Reservoir | East |
| Pepacton Reservoir | Reservoir | South |
| Ashokan Reservoir | Reservoir | South |
Major River Basins in New York
New York’s river basins are divided among several major drainage systems, including the Atlantic Ocean, Great Lakes, and Mississippi River systems. These basins support water supply, transportation, and ecosystems across the state.
- Hudson River Basin
- St. Lawrence River Basin
- Great Lakes Basin
- Susquehanna River Basin
- Delaware River Basin
- Mohawk River Basin
- Genesee River Basin
- Oswego River Basin
- Allegheny River Basin
New York Rivers Facts
| State | New York |
| Total Rivers & Streams | 70,000+ miles of streams |
| Major Rivers | Hudson, St. Lawrence, Mohawk, Genesee |
| Total Waterway Length | 75,000+ miles |
| Main Drainage | Atlantic Ocean, Great Lakes, Mississippi System |
| Longest River | St. Lawrence River |
| Shortest River | Oswego River |
| Major River Basins | 9 Primary Basins |
| Primary Outlet | Atlantic Ocean |
| Key Uses | Transportation, water supply, recreation, hydropower |
| Longest River Within State | Hudson River |
| Number of River Basins | 8–10 Basins |
| Major Reservoirs | Ashokan, Pepacton, Great Sacandaga |
| Primary Water Source | Surface water and reservoirs |
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