Question: Where on a map is the river serving as the mouth of Deer Creek?

full_context: Document 1: Deer Creek (Allegheny River tributary): Deer Creek is a tributary of the Allegheny River located in both Allegheny and Butler counties in the U.S. state of Pennsylvania.
Document 2: List of tributaries of Catawissa Creek: Catawissa Creek is a long creek flowing into the Susquehanna River with 26 named tributaries, of which 19 are direct tributaries. The creek flows through Luzerne, Schuylkill, and Columbia counties in Pennsylvania. The two shortest tributaries are approximately long, while the longest is about in length. The tributaries include seventeen runs, six creeks, and three hollows (unnamed streams named after named valleys that they flow through). By length, the five largest tributaries of Catawissa Creek are Little Catawissa Creek, Tomhicken Creek, Scotch Run, Beaver Run, and Messers Run. By watershed area, the five largest tributaries are Tomhicken Creek, Little Catawissa Creek, Beaver Run, Scotch Run, and Messers Run.
Document 3: Deerlick Run: Deerlick Run (also known as Deer Lick Run) is a tributary of Fishing Creek in Columbia County, Pennsylvania, in the United States. It is long. The stream flows through Mount Pleasant Township and Orange Township. The annual load of sediment in it is . The stream's watershed has an area of 6.1 square miles, most of which is agricultural land. There are also large areas of forested land in the watershed.
Document 4: Allegheny River: The Allegheny River (/ ˌæləˈɡeɪni / AL - ə - GAY - nee) is a principal tributary of the Ohio River; it is located in the Eastern United States. The Allegheny River joins with the Monongahela River to form the Ohio River at the ``Point ''of Point State Park in Downtown Pittsburgh, Pennsylvania. The Allegheny River is, by volume, the main headstream of the Ohio River.
Document 5: Shamokin Creek: Shamokin Creek (also known as Great Shamokin Creek or Middle Branch Shamokin Creek) is a tributary of the Susquehanna River in Northumberland County, Pennsylvania, in the United States. It is approximately long and flows through Mount Carmel, Mount Carmel Township, Coal Township, Shamokin, Ralpho Township, Shamokin Township, Snydertown, Upper Augusta Township, and Sunbury. The watershed of the creek has an area of . It experiences significant impacts by abandoned mine drainage and many abandoned mine drainage discharges are in its watershed. Various other impairments also affect parts of the creek's watershed. Shamokin Creek is in the Appalachian Mountains section of the Ridge and Valley physiographic province. Rock formations consisting of sandstone, shale, and anthracite deposits occur in the watershed.
Document 6: Coles Creek (Pennsylvania): Coles Creek (also known as Cole's Creek) is a tributary of Fishing Creek, in Columbia County, Pennsylvania and Sullivan County, Pennsylvania, in the United States. It is long and is the first named tributary of Fishing Creek downstream of where East Branch Fishing Creek and West Branch Fishing Creek meet to form Fishing Creek. The creek is on the edge of Columbia County and parts of its watershed are in Luzerne County.
Document 7: Deer Creek, Arizona: Deer Creek is a census-designated place in Gila County in the state of Arizona. Deer Creek is located almost directly between the community of Tonto Basin and the town of Payson near Arizona State Route 87. The population as of the 2010 U.S. Census was 216.
Document 8: Tionesta Creek: Tionesta Creek is a tributary of the Allegheny River in Forest, Clarion, Warren, McKean, and Elk Counties in Pennsylvania in the United States. Together with its West Branch, Tionesta Creek is long, flows generally south, and its watershed is in area.
Document 9: Pucketa Creek: Pucketa Creek is a tributary of the Allegheny River located in both Allegheny and Westmoreland counties in the U.S. state of Pennsylvania.
Document 10: List of crossings of the Monongahela River: This is a complete list of current bridges and other crossings of the Monongahela River starting from Pittsburgh, Pennsylvania, where the river helps to form the headwaters of the Ohio River, and ending in Fairmont, West Virginia, where the West Fork River and Tygart Valley River combine to form the Monongahela.
Document 11: French Creek (Allegheny River tributary): French Creek (also known as the Venango River) is a tributary of the Allegheny River in northwestern Pennsylvania and western New York in the United States.
Document 12: Cowanshannock Creek: Cowanshannock Creek (the eastern section is sometimes referred to as the North Branch Cowanshannock Creek) is a tributary of the Allegheny River in Armstrong and Indiana counties, Pennsylvania in the United States.
Document 13: Cheat River: The Cheat River is a tributary of the Monongahela River in eastern West Virginia and southwestern Pennsylvania in the United States. Via the Ohio River, the Cheat and Monongahela are part of the Mississippi River watershed. Owing to the ruggedness of the surrounding Allegheny Mountains, the Cheat remains largely remote with few settlements or developments along its banks. Its headwaters are in the Cheat-Potomac Ranger District of the Monongahela National Forest.
Document 14: South Branch Roaring Creek: South Branch Roaring Creek is a tributary of Roaring Creek in Columbia County and Northumberland County, Pennsylvania, in the United States. It is approximately long. The upper reaches of the creek are located in Weiser State Forest, between Big Mountain and Little Mountain. The creek is home to some trout and is considered a high-quality coldwater fishery. The Chemung Formation occurs in the creek's watershed. The watershed is 25 square miles in area.
Document 15: Oley Creek: Oley Creek is a tributary of Nescopeck Creek in Luzerne County, Pennsylvania, in the United States. It is approximately long. It flows through Foster Township, Dennison Township, and Butler Township. Long Hollow is a tributary of the creek. The creek's watershed has an area of . It is a high-quality coldwater fishery in its upper reaches and a Class A Wild Trout Fishery for part of its distance. The creek is in the upper reaches of the Nescopeck Creek watershed. It is named after a community in Berks County, Pennsylvania known as Oley.
ground_truth: Eastern United States
sub_queries: Deer Creek >> mouth of the watercourse Answer: Allegheny River
where is Allegheny River located on a map Answer: Eastern United States