question: The Emory River flows for just over 46 mi from its source near which state park in Morgan County, Tennessee, in the southeastern United States?
answer: Frozen Head State Park
context: Title: Emory River
  Passage: The Emory River is a river draining a portion of Tennessee's Cumberland Plateau.  It flows for just over 46 mi from its source near Frozen Head State Park to its mouth along the Clinch River at Kingston, Tennessee.
  Title: Sunrise River
  Passage: The Sunrise River is a 39.1 mi tributary of the St. Croix River in east–central Minnesota in the United States.  It is formed at the city of Forest Lake in Washington County at the outlet of Forest Lake.  The river flows north, accepting the South Branch from the west near the city of Wyoming, and continues north into Mud Lake, where the West Branch, which rises in southeast Isanti County and briefly enters Anoka County, joins it near the city of Stacy.  From Stacy it flows generally north-northwest through Chisago County to meet the St. Croix River within Wild River State Park near the communities of Sunrise and Almelund.  Not far upstream from its mouth, the Sunrise collects its North Branch, which rises in Isanti County and flows through the city of North Branch.
  Title: North Fork Crooked River
  Passage: The North Fork Crooked River is a tributary, 46 mi long, of the Crooked River in the U.S. state of Oregon.  Beginning in the Ochoco National Forest and the Ochoco Mountains east of Prineville, it flows north, then east, then south-southwest to meet the larger stream between Post and Paulina.  The confluence is 111 mi upstream of where the Crooked River flows into the Deschutes River.
  Title: Oakdale, Tennessee
  Passage: Oakdale is a town located along the Emory River in Morgan County, Tennessee, United States.  The population was 212 at the 2010 census, a decrease from the 2000 census figure of 244.
  Title: Big River (Missouri)
  Passage: The Big River is a tributary of the Meramec River in east-central Missouri.  The river rises in western Iron County ( ), near the summit of Johnson Mountain and the locale of Enough; it flows through Washington County, Saint Francois County, and Jefferson County.  It forms part of the boundary between Jefferson County and Saint Francois County and also part of the boundary between Jefferson County and Washington County.  It empties into the Meramec River opposite Eureka ( ), where the Meramec forms the border between Jefferson County and Saint Louis County.  The river flows through Washington State Park, St. Francois State Park, and the Lead Belt mining district.  The elevation of the river at its source is approximately 1300 ft above sea level and at its mouth about 400 ft .  The length of the river is approximately 145 mi , while the airline distance between source and mouth is about 56 mi .  Its watershed area is 955 sqmi .
  Title: Frozen Head State Park
  Passage: Frozen Head State Park and Natural Area is a state park in Morgan County, Tennessee, in the southeastern United States.  The park, situated in the Crab Orchard Mountains between the city of Wartburg and the community of Petros, contains some of the highest mountains in Tennessee west of the Blue Ridge.
  Title: Little Emory River
  Passage: The Little Emory River rises in Morgan County, Tennessee near the town of Coalfield.  It is one of the major tributaries to the Emory River.  It crosses into Roane County, where it soon becomes an embayment of Watts Bar Lake several miles upstream of its mouth into the Emory.  (Watts Bar Lake is a relatively deep reservoir and causes "slack water" conditions many miles up several Tennessee River tributaries, not just the main stream.)
citations: Emory River Frozen Head State Park