Title: Delaware River
Content:  main branches that descend from the western flank of the Catskill Mountains in New York. The West Branch begins near Mount Jefferson in the Town of Jefferson in Schoharie County. The river's East Branch begins at Grand Gorge in Delaware County. These two branches flow west and merge near Hancock in Delaware County, and the combined waters flow as the Delaware River south. Through its course, the Delaware River forms the boundaries between Pennsylvania and New York, the entire boundary between New Jersey and Pennsylvania, and most of the boundary between Delaware and New Jersey. The river meets tide-water at the junction of Morrisville, 
Title: Little Delaware River
Content:  Little Delaware River is a river in Delaware County, New York. It begins along the western slope of Plattekill Mountain, northeast of the Hamlet of Bovina and flows generally westward before converging with the West Branch Delaware River by the Village of Delhi.
Title: Delaware Run
Content:  Delaware Run begins in Delaware Township, near the southern edge of the Muncy Hills. It flows southwards and crosses under Pennsylvania Route 54 before making a sharp turn northwest. The course gradually turns from northwest to westwards as the stream picks up two tributaries. It then turns southwest and passes by the community of Dewart and flowing under Pennsylvania Route 405. After passing Pennsylvania Route 405, the stream turns southwards, paralleling the West Branch Susquehanna River, and passes under Pennsylvania Route 44. Shortly after this, the stream reaches its confluence with the West Branch Susquehanna River.
Title: Delaware River
Content:  The Delaware River is a major river on the Atlantic coast of the United States. It drains an area of 13539 sqmi in four U.S. states: Delaware, New Jersey, New York and Pennsylvania. Rising in two branches in New York state's Catskill Mountains, the river flows 419 mi into Delaware Bay where its waters enter the Atlantic Ocean near Cape May in New Jersey and Cape Henlopen in Delaware. Not including Delaware Bay, the river's length including its two branches is 388 mi. The Delaware River is one of nineteen "Great Waters" recognized by the America's Great Waters Coalition. The Delaware River rises in 
Title: Delaware River
Content:  From Hancock, New York, the river flows between the northern Poconos in Pennsylvania, and the lowered shale beds north of the Catskills. The river flows down a broad Appalachian valley, passing Hawk's Nest overlook on the Upper Delaware Scenic Byway. The river flows southeast for 78 miles through rural regions along the New York-Pennsylvania border to Port Jervis and the Shawangunk Mountains.
Title: Delaware River (Texas)
Content:  The Delaware River (Texas) or Delaware Creek is an intermittent stream that rises in Guadalupe Mountains National Park about 8 km west of Pine Springs and 3 km north of Guadalupe Peak in northwestern Culberson County, Texas. It flows into the Pecos River in New Mexico, 5 km north of the border with Texas. From its source in the sky island of Guadalupe Mountains National Park, the Delaware River flows through the sparsely populated Chihuahuan Desert. There are no cities or towns along its course, and a few ranches and the small community of Pine Springs (population 51) are the only settlements. The land near the river is mostly used for cattle ranching. The Delaware River was named after the Delaware Indians who guided early American expeditions to this area, including that of Randolph B. Marcy in 1849. The Butterfield Stage route, beginning in 1858, followed the Delaware River. A stagecoach station was established at Delaware Springs (31.86583°N, -104.47583°W) where several springs, some with potable water and others mineralized, provided the only reliable source of water for many miles around.
Title: Little River (Delaware)
Content:  The Little River (also called Little Creek) is a river, approximately 8 mi long, in central Delaware in the United States. It rises in central Kent County, approximately 1 mi northwest of Dover and flows generally east, entering Delaware Bay approximately 6 mi (10 km) west Dover. The lower 2 mi of the river is surrounded by extensive wetlands protected as part of the Little Creek Wildlife Area.
Title: Delaware River (Kansas)
Content:  The Delaware River rises west of Sabetha, Kansas in Nemaha County. The river's course is generally southeast through the counties of Nemaha, Brown, Jackson, Atchison, and Jefferson in northeast Kansas. The Delaware passes through The Kickapoo Nation Reservation and is an important river for the tribe. Some of its main tributaries include Grasshopper Creek, Muddy Creek, Elk Creek, Straight Creek, Cedar Creek and Rock Creek. The Delaware's course takes it through rich farmland and this gives the river's water a very muddy appearance. Just south of Valley Falls the river enters Perry Lake, a man made reservoir to control flooding. It then enters the Kansas River just north of Lecompton, Kansas. Some cities within 10 mi of the river include, Sabetha, Fairview, Powhattan, Horton, Whiting, Muscotah, Holton, Valley Falls, Ozawkie, Perry, and Lecompton, Kansas. In Valley Falls it is crossed by the Delaware River Composite Truss Bridge, built in 1936, which is listed on the National Register of Historic Places.
Title: Delaware Run
Content:  Delaware Run is a tributary of the West Branch Susquehanna River in Northumberland County, Pennsylvania, in the United States. It is 7.4 mi long. It flows through Delaware Township, starting in the Muncy Hills. The watershed has an area of 11.7 square miles in Northumberland and Lycoming Counties. Delaware Run was reached by Europeans as early as 1737 and an area near it settled in 1769 and the community of Dewart is near Delaware Run.
Title: West Branch Delaware River
Content:  It rises in Schoharie County, New York and flows generally southwest, entering Delaware County and flowing past Stamford and Delhi. In southwestern Delaware County it flows in an increasingly winding course through the mountains, generally southwest. At Stilesville it is impounded to form the Cannonsville Reservoir. At Deposit, on the border between Broome and Delaware counties, it turns sharply to the southeast and is paralleled by New York State Route 17. It joins the East Branch at Hancock to form the Delaware. For the lower 6 mi (10 km) it forms part of the boundary between New York and Pennsylvania.

Question: where does delaware river start?
Answer: West Branch Delaware River.