s-emanuilov/rivers-qa · Datasets at Hugging Face

river_name stringlengths 4 65	question_id stringlengths 6 67	question stringlengths 30 337	answer_1 stringlengths 1 153	answer_2 stringlengths 1 171	answer_3 stringlengths 1 153 ⌀	answer_4 stringlengths 1 153	answer_5 stringlengths 1 153 ⌀	correct_answer_index int64 0 4
Aliso Creek (Los Angeles County)	Aliso Creek (Los Angeles County)_1	What is the approximate watershed area of Aliso Creek in square kilometers?	45 km²	21 km²	34 km²	12 km²	54 km²	4
Aliso Creek (Los Angeles County)	Aliso Creek (Los Angeles County)_2	Which of the following is the primary river system that Aliso Creek is a major tributary to?	Upper Los Angeles River	Bell Creek	Browns Canyon Wash−Creek	Santa Susana Mountains	Arroyo Calabasas	0
Aliso Creek (Orange County)	Aliso Creek (Orange County)_1	What geological age range does the marine sedimentary rock underlying Aliso Creek belong to?	Late Jurassic to Cretaceous	Late Cretaceous to Miocene	Early Eocene to Oligocene	Miocene to Pleistocene	Late Eocene to Pliocene	4
Aliso Creek (Orange County)	Aliso Creek (Orange County)_2	Approximately what percentage of the Aliso Creek watershed was urbanized by the 21st century?	Approximately 60 percent	Around 50 percent	Less than 30 percent	Nearly 90 percent	Over 70 percent	4
Allabands Mill Stream (Isaac Branch tributary)	Allabands Mill Stream (Isaac Branch tributary)_1	What is the approximate length of the Allabands Mill Stream in miles?	2.90 km	2.90 mi	1.80 km	1.00 mi	1.80 mi	4
Allabands Mill Stream (Isaac Branch tributary)	Allabands Mill Stream (Isaac Branch tributary)_2	Allabands Mill Stream is classified as what order tributary to Isaac Branch?	4th order	1st order	3rd order	0th order	2nd order	1
Allagash River	Allagash River_1	What is the average discharge of the Allagash River at the United States government stream gauge near Allagash, Maine?	40,900 cubic feet per second	1,479 cubic feet per second	87 cubic feet per second	55.7 cubic meters per second	1,967 cubic feet per second	4
Allagash River	Allagash River_2	What is the total length of the Allagash River, extending its flowline to Lock Dam on Chamberlain Lake?	138 miles (86 km)	65 miles (105 km)	105 miles (138 km)	65 km (105 miles)	86 miles (138 km)	4
Allegheny Creek	Allegheny Creek_1	Allegheny Creek is a tributary to which larger river system?	Ohio River	Delaware River	Susquehanna River	Monongahela River	Schuylkill River	4
Allegheny Creek	Allegheny Creek_2	What is the approximate length of Allegheny Creek in kilometers?	18.2 km	18.2 miles	29.0 km	11.3 miles	11.3 km	0
Allegheny River	Allegheny River_1	What is the total length of the Allegheny River in kilometers?	24 km	325 km	848 km	100 km	523 km	4
Allegheny River	Allegheny River_2	The Allegheny Reservoir, created by the Kinzua Dam, is approximately how many miles long?	1965 miles	325 miles	523 miles	100 miles	24 miles	4
Allen Branch (Doe Run Creek tributary)	Allen Branch (Doe Run Creek tributary)_1	In which U.S. state is Allen Branch located?	Kentucky	Arkansas	Illinois	Tennessee	Missouri	4
Allen Branch (Doe Run Creek tributary)	Allen Branch (Doe Run Creek tributary)_2	Allen Branch is a tributary to which larger waterway?	Meramec River	St. Francois River	Black River	Osage River	Doe Run Creek	4
Allen Branch (Fourche a Renault tributary)	Allen Branch (Fourche a Renault tributary)_1	Allen Branch is a tributary to which larger river system?	St. Francis River	Big River	Meramec River	Black River	Fourche a Renault	4
Allen Branch (Fourche a Renault tributary)	Allen Branch (Fourche a Renault tributary)_2	The naming of Allen Branch is attributed to the original ownership by which individual?	Thomas Fourche	Robert Renault	William Washington	James Branch	John Allen	4
Allen Branch (Troublesome Creek tributary)	Allen Branch (Troublesome Creek tributary)_1	Allen Branch is a tributary of which larger waterway?	Allen Creek	Lewis River	Missouri River	N. E. Creek	Troublesome Creek	4
Allen Branch (Troublesome Creek tributary)	Allen Branch (Troublesome Creek tributary)_2	In which Missouri county is Allen Branch located?	Marion County	Monroe County	Lewis County	Clark County	Randolph County	2
Allen Creek (Banister River tributary)	Allen Creek (Banister River tributary)_1	What is the approximate length of Allen Creek in kilometers?	5.74 km	5.47 km	8.08 km	8.80 miles	8.80 km	4
Allen Creek (Banister River tributary)	Allen Creek (Banister River tributary)_2	Allen Creek is a tributary to which larger river system?	Virginia River	Allen River	Pittsylvania Creek	Third Order River	Banister River	4
Allen Pond Outlet	Allen Pond Outlet_1	Into which river does the Allen Pond Outlet discharge?	West Grass River	North Branch Grass River	East Grass River	Middle Grass River	South Branch Grass River	4
Allen Pond Outlet	Allen Pond Outlet_2	What is the confluence point of the Allen Pond Outlet described as?	Adjacent to the South Branch Grass River	Upstream of the South Branch Grass River	Downstream of the South Branch Grass River	Within the South Branch Grass River	Near the South Branch Grass River	4
Alligator Creek (Little Ocmulgee River tributary)	Alligator Creek (Little Ocmulgee River tributary)_1	What is the approximate length of Alligator Creek in kilometers?	78.2 miles	48.6 km	126.8 km	48.6 miles	78.2 km	4
Alligator Creek (Little Ocmulgee River tributary)	Alligator Creek (Little Ocmulgee River tributary)_2	Alligator Creek is a tributary of which larger river system?	Georgia Creek	Ocmulgee River	Alligator River	South River	Little Ocmulgee River	4
Alligator River (North Carolina)	Alligator River (North Carolina)_1	What is the approximate length of the canal connecting the Alligator River to the Pungo River?	30 miles	15 miles	25 miles	10 miles	21 miles	4
Alligator River (North Carolina)	Alligator River (North Carolina)_2	Which of the following is NOT explicitly mentioned as a habitat type bordering the Alligator River National Wildlife Refuge?	Fresh and brackish water marshes	Pine barrens	Hardwood swamps	High and low pocosin	Atlantic white cypress swamps	1
Allison Creek	Allison Creek_1	Allison Creek is named after which prominent historical figure associated with its region?	Sarah Allison, a founding settler	Allison Smith, a local historian	Robert Allison, a prominent landowner	David Allison, a territorial governor	Curt Allison, a pioneer rancher	4
Allison Creek	Allison Creek_2	In which U.S. state is Allison Creek located?	North Dakota	Wyoming	South Dakota	Nebraska	Montana	2
Alloway Creek (Monocacy River tributary)	Alloway Creek (Monocacy River tributary)_1	What is the total length of Alloway Creek in kilometers?	13.7 km	13.5 km	21.5 km	21.0 km	21.7 km	4
Alloway Creek (Monocacy River tributary)	Alloway Creek (Monocacy River tributary)_2	Alloway Creek is a tributary to which larger river system, ultimately contributing to the Potomac River watershed?	Susquehanna River	Alloway River	Potomac River	Ohio River	Monocacy River	4
Almshouse Branch (Isaac Branch tributary)	Almshouse Branch (Isaac Branch tributary)_1	What is the designated order of Almshouse Branch as a tributary?	4th order	2nd order	3rd order	5th order	1st order	4
Almshouse Branch (Isaac Branch tributary)	Almshouse Branch (Isaac Branch tributary)_2	What is the length of Almshouse Branch in miles?	5.09 km	5.09 miles	3.16 miles	1.00 mile	3.16 km	2
Alpine Creek	Alpine Creek_1	What is the approximate latitude of Alpine Creek's source?	37°18′51″N	37°11′51″N	122°11′51″N	122°18′21″N	37°18′21″N	4
Alpine Creek	Alpine Creek_2	Alpine Creek forms San Gregorio Creek through its confluence with which other creek?	West Alpine Creek	Skyline Creek	La Honda Creek	San Mateo Creek	Russian Ridge Creek	2
Alplaus Kill	Alplaus Kill_1	Into which major river does the Alplaus Kill ultimately discharge?	Allegheny River	Hudson River	St. Lawrence River	Delaware River	Mohawk River	4
Alplaus Kill	Alplaus Kill_2	The name 'Alplaus Kill' is most likely derived from which language, suggesting a meaning related to 'eel pond'?	English	German	French	Swedish	Dutch	4
Alsea River	Alsea River_1	What is the total length of the Alsea River in miles, from its origin to its termination?	78.1 km	78.1 miles	48.5 km	126.6 miles	48.5 miles	4
Alsea River	Alsea River_2	The Alsea River's drainage basin extends into which county, specifically along the headwaters of one of its forks?	Siuslaw County	Benton County	Lincoln County	Pacific County	Lane County	4
Alsek River	Alsek River_1	What is the approximate distance the Alsek River's outlet is predicted to shift southeastward within Glacier Bay National Park?	35 miles (56 km)	10 miles (16 km)	25 miles (40 km)	5 miles (8 km)	17 miles (28 km)	4
Alsek River	Alsek River_2	In what year did the Alsek River notably alter its flow by capturing the water of the Slims River?	2005	2010	2020	2015	2016	4
Alston Branch (Leipsic River tributary)	Alston Branch (Leipsic River tributary)_1	What is the approximate distance in miles from Alston Branch to Dover, Delaware?	12 miles	2.17 miles	3.49 miles	0.6 miles	6 miles	4
Alston Branch (Leipsic River tributary)	Alston Branch (Leipsic River tributary)_2	Alston Branch is classified as what order tributary within its river system?	Leipsic River tributary	2nd order	3rd order	Kent County tributary	1st order	4
Altamaha River	Altamaha River_1	What is the approximate drainage basin size of the Altamaha River, including its tributaries?	220 square miles	36,000 miles	137 square miles	14,000 km	14,000 square miles	4
Altamaha River	Altamaha River_2	What is the Altamaha River's length in kilometers?	220 km	220 miles	36,000 km	14,000 km	137 km	0
Alum Creek (Ohio)	Alum Creek (Ohio)_1	Alum Creek originates in which county before flowing south?	Licking County	Delaware County	Franklin County	Union County	Morrow County	4
Alum Creek (Ohio)	Alum Creek (Ohio)_2	What is the approximate length of Alum Creek in kilometers?	93 km	93 miles	150 km	58 miles	58 km	0
Alum Creek (South Dakota)	Alum Creek (South Dakota)_1	What is the primary geological characteristic that led to Alum Creek's naming?	Unusual pH level of the water	Presence of aluminum deposits	High mineral content in the sediment	Abundance of alum-producing bacteria	Naturally occurring bitter river water	4
Alum Creek (South Dakota)	Alum Creek (South Dakota)_2	In which U.S. state is Alum Creek located?	North Dakota	Wyoming	South Dakota	Nebraska	Montana	2
Alum Fork	Alum Fork_1	Alum Fork is a tributary of which larger waterway?	Ohio River	Alum Creek	West Virginia River	Kanawha River	Leading Creek	4
Alum Fork	Alum Fork_2	The distinctive characteristic of Alum Fork's water that gives it its name is the presence of what chemical compound?	Nitrate	Sulfate	Chloride	Phosphate	Alum	4
Amargosa River	Amargosa River_1	What is the approximate length of the Amargosa River in miles?	143 miles	298 miles	42 miles	26 miles	185 miles	4
Amargosa River	Amargosa River_2	A protected segment of the Amargosa River, designated as National Wild and Scenic, spans how many kilometers between Shoshone and Dumont Dunes?	143 km	298 km	42 km	26 km	185 km	2
Amazon Creek	Amazon Creek_1	Amazon Creek is a tributary to which larger river system?	Coast Fork Willamette River	Willamette River	McKenzie River	Siuslaw River	Long Tom River	4
Amazon Creek	Amazon Creek_2	Relative to the Willamette River, what is the approximate size ranking of Amazon Creek within Eugene?	Fifth-largest waterway	Third-largest waterway	Fourth-largest waterway	Largest waterway	Second-largest waterway	4
American Crow Creek	American Crow Creek_1	What geographical feature is American Crow Creek?	A tributary	A river	A creek	A canal	A stream	4
American Crow Creek	American Crow Creek_2	According to tradition, who is credited with naming American Crow Creek?	The U.S. Geological Survey	Native American tribes	Early European settlers	Local conservationists	The Lewis and Clark Expedition	4
American Fork (river)	American Fork (river)_1	In which specific county in Utah is the American Fork River located?	Summit County	Salt Lake County	Davis County	Wasatch County	Utah County	4
American Fork (river)	American Fork (river)_2	What is the primary geographical designation of the American Fork River within Utah?	A tributary in Utah County, Utah, United States	A creek in Utah County, Utah, United States	A stream in Utah County, Utah, United States	A canal in Utah County, Utah, United States	A river in Utah County, Utah, United States	4
American Horse Creek	American Horse Creek_1	According to one prevailing theory, what is the primary origin of the name 'American Horse Creek'?	It is named after a prominent American explorer.	It is named after a famous American cavalry horse.	It is named after a historical battle involving American soldiers.	It is named after a type of wild horse found in America.	It is named after an Oglala Lakota chief named American Horse.	4
American Horse Creek	American Horse Creek_2	What alternative etymological explanation for 'American Horse Creek' involves a specific type of equine and an individual's occupation?	A treaty negotiation concerning the ownership of American horses.	A herd of wild horses discovered by an American naturalist.	The capture of a prized stallion belonging to an American settler.	The migration of a specific breed of horse from America.	An incident involving an Indian horse thief and his 'American horses'.	4
American River	American River_1	What is the primary natural phenomenon that feeds the American River?	Glacial melt from higher peaks	Seasonal monsoon rains from the south	Underground aquifer replenishment	Coastal fog condensation	Melting snowpack of the Sierra Nevada	4
American River	American River_2	Which historical event, initiated by a discovery at Sutter's Mill, significantly contributed to the large-scale settlement of California by European immigrants?	The construction of transcontinental railroads	The establishment of agricultural colonies	The discovery of oil reserves	The founding of the first missions	The California Gold Rush	4
American River (Washington)	American River (Washington)_1	Which river system is the American River a part of, ultimately leading to the Pacific Ocean?	Yukon River basin	Colorado River basin	Mississippi River basin	Snake River basin	Columbia River basin	4
American River (Washington)	American River (Washington)_2	What was the original name of the American River, according to historian Gretta Gossett?	Pleasant Valley Creek	Chinook Creek	Rainier Fork	American Lake Creek	Miners Creek	4
Americano Creek	Americano Creek_1	What is the combined total length of Americano Creek and the Estero Americano in miles?	7.5 miles	12.0 miles	9.2 miles	21.2 miles	16.7 miles	4
Americano Creek	Americano Creek_2	If Americano Creek flows westward, into which cardinal direction does the Estero Americano ultimately discharge?	West	South	East	Northeast	North	0
Ames Creek (South Santiam River tributary)	Ames Creek (South Santiam River tributary)_1	What is the approximate river mileage of Ames Creek from its confluence with the South Santiam River to its origin near Chimney Rock?	Around 10 miles	53 miles	Approximately 20 miles	Just under 40 miles	33 miles	4
Ames Creek (South Santiam River tributary)	Ames Creek (South Santiam River tributary)_2	At what geographical feature does Ames Creek merge with the South Santiam River?	U.S. Route 20	Chimney Rock	Linn County	The Cascade Range foothills	Sweet Home	4
Amite River	Amite River_1	What is the navigable length of the Amite River in miles?	188 miles	117 miles	59.5 miles	74 miles	37 miles	4
Amite River	Amite River_2	The Amite River originates as two forks in which U.S. state before flowing south into Louisiana?	Alabama	Mississippi	Texas	Arkansas	Louisiana	1
Ammonoosuc River	Ammonoosuc River_1	What is the approximate length of the Ammonoosuc River in kilometers?	100 km	55 km	144 km	72 km	89 km	4
Ammonoosuc River	Ammonoosuc River_2	Which of the following rivers is a tributary that the Ammonoosuc River collects before flowing into the Connecticut River?	Long Island Sound	Gale River	Connecticut River	Mount Washington River	Wild Ammonoosuc River	4
Amnicon River	Amnicon River_1	What geological feature is highlighted by the two major waterfalls along the Amnicon River, and what formations do they separate?	The Wisconsin Divide, separating metamorphic and igneous formations	The Amnicon Gorge, separating granite and shale formations	The Superior Uplift, separating limestone and quartzite formations	The Lake Superior Escarpment, separating sedimentary and volcanic formations	The Douglas Fault, separating basalt and sandstone formations	4
Amnicon River	Amnicon River_2	What was the primary historical use of the Amnicon River during the nineteenth century, and what was its significance for nearby developing towns?	Irrigation for agricultural expansion in central Douglas County	Water power generation for early industrial mills in Superior	Fishing and trade routes connecting to Lake Michigan	Transportation of iron ore to processing facilities in Duluth	Log transportation for building materials for Superior and Duluth	4
Amo Creek	Amo Creek_1	What is the geographical region where Amo Creek is located?	Denali Borough, Alaska	Yukon-Koyukuk Census Area, Alaska	Fairbanks North Star Borough, Alaska	Matanuska-Susitna Borough, Alaska	North Slope Borough, Alaska	4
Amo Creek	Amo Creek_2	The name 'Amo' for this creek is derived from which linguistic origin?	Athabaskan phrase for 'salmon spawning'	Native Alaskan word meaning 'fast-flowing'	Inuit term for 'northern lights'	Aleut dialect signifying 'mountain stream'	Eskimo word meaning 'wolf'	4
Amon Creek	Amon Creek_1	What is the approximate total length of Amon Creek, from the source of its East Fork to its mouth, in miles?	15 miles	21 miles	10 miles	25 miles	13 miles	4
Amon Creek	Amon Creek_2	Which of the following describes the general flow direction of the West Fork of Amon Creek as it exits Badger Canyon?	Westbound	Southbound	Eastbound	Northwestbound	Northbound	4
Amtkeli	Amtkeli_1	What is the approximate catchment area of the Amtkeli River in square miles?	50 sq mi	398 sq mi	1030 sq mi	200 sq mi	154 sq mi	4
Amtkeli	Amtkeli_2	Which of the following best describes the typical seasonal flow pattern of the Amtkeli River?	Floods in autumn and winter, low flows in spring	Consistent flow year-round with minor fluctuations	Floods in late spring and summer, low flows in winter	Floods in winter, low flows in summer	Low flows in late spring and summer, floods in winter	2
Ana River	Ana River_1	What is the approximate length of the Ana River in miles?	15 miles	11 miles	5 miles	9 miles	7 miles	4
Ana River	Ana River_2	Which rare fish species, found in the Ana River, is specifically mentioned as habitat within the Summer Lake Wildlife Area?	Winter Ridge Tui chub	Great Basin Tui chub	Oregon Tui chub	Ana Reservoir Tui chub	Summer Lake Tui chub	4
Anacostia River	Anacostia River_1	What is the approximate length of the Anacostia River in miles?	9.7 miles	14.0 miles	7.8 miles	14.0 kilometers	8.7 miles	4
Anacostia River	Anacostia River_2	Into which major river does the Anacostia River ultimately empty?	The Anacostia River itself	The Washington Channel	The Chesapeake Bay	The Atlantic Ocean	The Potomac River	4
Anahulu River	Anahulu River_1	What is the approximate length of the Anahulu River in miles?	6.5 miles	11.4 miles	10 miles	8.2 miles	7.1 miles	4
Anahulu River	Anahulu River_2	The Hawaiian meaning of 'Anahulu' translates to what duration?	One day	Seven days	Eleven days	Fourteen days	Ten days	4
Anaktuvuk River	Anaktuvuk River_1	What is the approximate length of the Anaktuvuk River in miles?	120 miles	217 miles	150 miles	100 miles	135 miles	4
Anaktuvuk River	Anaktuvuk River_2	Which mountain lies on the watershed divide between the Arctic Coastal Plain and the Koyukuk River, feeding the Anaktuvuk River via Graylime Creek?	Mount Schrader	Fan Mountain	Alapah Mountain	Mount Marshall	Limestack Mountain	4
Anchor River	Anchor River_1	What is the approximate distance between the Anchor River's mouth and Homer?	20 miles (32 km)	30 miles (48 km)	10 miles (16 km)	5 miles (8 km)	15 miles (24 km)	4
Anchor River	Anchor River_2	The Anchor River and Fritz Creek Critical Habitat Area is primarily designated to protect which specific type of wildlife?	Bears	Salmon	Bald Eagles	Sea Otters	Moose	4
Anclote River	Anclote River_1	What is the approximate length of the Anclote River in kilometers?	29 miles	29 km	47 miles	76 km	47 km	4
Anclote River	Anclote River_2	The Anclote River's westward flow terminates into which major body of water?	Lake Okeechobee	Atlantic Ocean	Tampa Bay	Caloosahatchee River	Gulf of Mexico	4
Anderson Creek (Pennsylvania)	Anderson Creek (Pennsylvania)_1	What is the total vertical drop of Anderson Creek?	38.0 ft	1450 ft	1175 ft	23.6 ft	275 ft	4
Anderson Creek (Pennsylvania)	Anderson Creek (Pennsylvania)_2	Anderson Creek is classified as a whitewater stream with what approximate difficulty rating?	Class IV-V	Class III-IV	Class II-III+	Class I-III	Class I-II	2
Anderson Fork	Anderson Fork_1	Anderson Fork is a stream located in which two Ohio counties?	Lucas and Wood counties	Hamilton and Clermont counties	Franklin and Delaware counties	Stark and Summit counties	Clinton and Greene counties	4
Anderson Fork	Anderson Fork_2	The naming of Anderson Fork is attributed to which individual?	Thomas Jefferson	William H. Harrison	George Washington	Andrew Jackson	Richard C. Anderson	4
Anderson River (Indiana)	Anderson River (Indiana)_1	What is the approximate distance in miles the Anderson River flows before joining the Ohio River?	55.0 miles	81.1 miles	45.9 miles	70.2 miles	50.4 miles	4
Anderson River (Indiana)	Anderson River (Indiana)_2	Which of the following bodies of water is the Anderson River a tributary of, ultimately connecting to the Mississippi River watershed?	The Ohio River's Middle Fork	The Mississippi River	The Wabash River	The Hoosier River	The Ohio River	4
Andi Koysu	Andi Koysu_1	What is the total drainage basin area of the Andi Koysu river in square miles?	1,760 sq mi	4,810 sq mi	1,960 sq mi	2,860 sq mi	1,860 sq mi	4
Andi Koysu	Andi Koysu_2	If the Andi Koysu river's length is considered including its longest source river, what is its total length in miles?	119 mi	192 mi	89 mi	109 mi	144 mi	0

Aliso Creek (Los Angeles County)

Aliso Creek (Los Angeles County)_1

What is the approximate watershed area of Aliso Creek in square kilometers?

45 km²

21 km²

34 km²

12 km²

54 km²

4

Aliso Creek (Los Angeles County)

Aliso Creek (Los Angeles County)_2

Which of the following is the primary river system that Aliso Creek is a major tributary to?

Upper Los Angeles River

Bell Creek

Browns Canyon Wash−Creek

Santa Susana Mountains

Arroyo Calabasas

0

Aliso Creek (Orange County)

Aliso Creek (Orange County)_1

What geological age range does the marine sedimentary rock underlying Aliso Creek belong to?

Late Jurassic to Cretaceous

Late Cretaceous to Miocene

Early Eocene to Oligocene

Miocene to Pleistocene

Late Eocene to Pliocene

4

Aliso Creek (Orange County)

Aliso Creek (Orange County)_2

Approximately what percentage of the Aliso Creek watershed was urbanized by the 21st century?

Approximately 60 percent

Around 50 percent

Less than 30 percent

Nearly 90 percent

Over 70 percent

4

Allabands Mill Stream (Isaac Branch tributary)

Allabands Mill Stream (Isaac Branch tributary)_1

What is the approximate length of the Allabands Mill Stream in miles?

2.90 km

2.90 mi

1.80 km

1.00 mi

1.80 mi

4

Allabands Mill Stream (Isaac Branch tributary)

Allabands Mill Stream (Isaac Branch tributary)_2

Allabands Mill Stream is classified as what order tributary to Isaac Branch?

4th order

1st order

3rd order

0th order

2nd order

1

Allagash River

Allagash River_1

What is the average discharge of the Allagash River at the United States government stream gauge near Allagash, Maine?

40,900 cubic feet per second

1,479 cubic feet per second

87 cubic feet per second

55.7 cubic meters per second

1,967 cubic feet per second

4

Allagash River

Allagash River_2

What is the total length of the Allagash River, extending its flowline to Lock Dam on Chamberlain Lake?

138 miles (86 km)

65 miles (105 km)

105 miles (138 km)

65 km (105 miles)

86 miles (138 km)

4

Allegheny Creek

Allegheny Creek_1

Allegheny Creek is a tributary to which larger river system?

Ohio River

Delaware River

Susquehanna River

Monongahela River

Schuylkill River

4

Allegheny Creek

Allegheny Creek_2

What is the approximate length of Allegheny Creek in kilometers?

18.2 km

18.2 miles

29.0 km

11.3 miles

11.3 km

0

Allegheny River

Allegheny River_1

What is the total length of the Allegheny River in kilometers?

24 km

325 km

848 km

100 km

523 km

4

Allegheny River

Allegheny River_2

The Allegheny Reservoir, created by the Kinzua Dam, is approximately how many miles long?

1965 miles

325 miles

523 miles

100 miles

24 miles

4

Allen Branch (Doe Run Creek tributary)

Allen Branch (Doe Run Creek tributary)_1

In which U.S. state is Allen Branch located?

Kentucky

Arkansas

Illinois

Tennessee

Missouri

4

Allen Branch (Doe Run Creek tributary)

Allen Branch (Doe Run Creek tributary)_2

Allen Branch is a tributary to which larger waterway?

Meramec River

St. Francois River

Black River

Osage River

Doe Run Creek

4

Allen Branch (Fourche a Renault tributary)

Allen Branch (Fourche a Renault tributary)_1

Allen Branch is a tributary to which larger river system?

St. Francis River

Big River

Meramec River

Black River

Fourche a Renault

4

Allen Branch (Fourche a Renault tributary)

Allen Branch (Fourche a Renault tributary)_2

The naming of Allen Branch is attributed to the original ownership by which individual?

Thomas Fourche

Robert Renault

William Washington

James Branch

John Allen

4

Allen Branch (Troublesome Creek tributary)

Allen Branch (Troublesome Creek tributary)_1

Allen Branch is a tributary of which larger waterway?

Allen Creek

Lewis River

Missouri River

N. E. Creek

Troublesome Creek

4

Allen Branch (Troublesome Creek tributary)

Allen Branch (Troublesome Creek tributary)_2

In which Missouri county is Allen Branch located?

Marion County

Monroe County

Lewis County

Clark County

Randolph County

2

Allen Creek (Banister River tributary)

Allen Creek (Banister River tributary)_1

What is the approximate length of Allen Creek in kilometers?

5.74 km

5.47 km

8.08 km

8.80 miles

8.80 km

4

Allen Creek (Banister River tributary)

Allen Creek (Banister River tributary)_2

Allen Creek is a tributary to which larger river system?

Virginia River

Allen River

Pittsylvania Creek

Third Order River

Banister River

4

Allen Pond Outlet

Allen Pond Outlet_1

Into which river does the Allen Pond Outlet discharge?

West Grass River

North Branch Grass River

East Grass River

Middle Grass River

South Branch Grass River

4

Allen Pond Outlet

Allen Pond Outlet_2

What is the confluence point of the Allen Pond Outlet described as?

Adjacent to the South Branch Grass River

Upstream of the South Branch Grass River

Downstream of the South Branch Grass River

Within the South Branch Grass River

Near the South Branch Grass River

4

Alligator Creek (Little Ocmulgee River tributary)

Alligator Creek (Little Ocmulgee River tributary)_1

What is the approximate length of Alligator Creek in kilometers?

78.2 miles

48.6 km

126.8 km

48.6 miles

78.2 km

4

Alligator Creek (Little Ocmulgee River tributary)

Alligator Creek (Little Ocmulgee River tributary)_2

Alligator Creek is a tributary of which larger river system?

Georgia Creek

Ocmulgee River

Alligator River

South River

Little Ocmulgee River

4

Alligator River (North Carolina)

Alligator River (North Carolina)_1

What is the approximate length of the canal connecting the Alligator River to the Pungo River?

30 miles

15 miles

25 miles

10 miles

21 miles

4

Alligator River (North Carolina)

Alligator River (North Carolina)_2

Which of the following is NOT explicitly mentioned as a habitat type bordering the Alligator River National Wildlife Refuge?

Fresh and brackish water marshes

Pine barrens

Hardwood swamps

High and low pocosin

Atlantic white cypress swamps

1

Allison Creek

Allison Creek_1

Allison Creek is named after which prominent historical figure associated with its region?

Sarah Allison, a founding settler

Allison Smith, a local historian

Robert Allison, a prominent landowner

David Allison, a territorial governor

Curt Allison, a pioneer rancher

4

Allison Creek

Allison Creek_2

In which U.S. state is Allison Creek located?

North Dakota

Wyoming

South Dakota

Nebraska

Montana

2

Alloway Creek (Monocacy River tributary)

Alloway Creek (Monocacy River tributary)_1

What is the total length of Alloway Creek in kilometers?

13.7 km

13.5 km

21.5 km

21.0 km

21.7 km

4

Alloway Creek (Monocacy River tributary)

Alloway Creek (Monocacy River tributary)_2

Alloway Creek is a tributary to which larger river system, ultimately contributing to the Potomac River watershed?

Susquehanna River

Alloway River

Potomac River

Ohio River

Monocacy River

4

Almshouse Branch (Isaac Branch tributary)

Almshouse Branch (Isaac Branch tributary)_1

What is the designated order of Almshouse Branch as a tributary?

4th order

2nd order

3rd order

5th order

1st order

4

Almshouse Branch (Isaac Branch tributary)

Almshouse Branch (Isaac Branch tributary)_2

What is the length of Almshouse Branch in miles?

5.09 km

5.09 miles

3.16 miles

1.00 mile

3.16 km

2

Alpine Creek

Alpine Creek_1

What is the approximate latitude of Alpine Creek's source?

37°18′51″N

37°11′51″N

122°11′51″N

122°18′21″N

37°18′21″N

4

Alpine Creek

Alpine Creek_2

Alpine Creek forms San Gregorio Creek through its confluence with which other creek?

West Alpine Creek

Skyline Creek

La Honda Creek

San Mateo Creek

Russian Ridge Creek

2

Alplaus Kill

Alplaus Kill_1

Into which major river does the Alplaus Kill ultimately discharge?

Allegheny River

Hudson River

St. Lawrence River

Delaware River

Mohawk River

4

Alplaus Kill

Alplaus Kill_2

The name 'Alplaus Kill' is most likely derived from which language, suggesting a meaning related to 'eel pond'?

English

German

French

Swedish

Dutch

4

Alsea River

Alsea River_1

What is the total length of the Alsea River in miles, from its origin to its termination?

78.1 km

78.1 miles

48.5 km

126.6 miles

48.5 miles

4

Alsea River

Alsea River_2

The Alsea River's drainage basin extends into which county, specifically along the headwaters of one of its forks?

Siuslaw County

Benton County

Lincoln County

Pacific County

Lane County

4

Alsek River

Alsek River_1

What is the approximate distance the Alsek River's outlet is predicted to shift southeastward within Glacier Bay National Park?

35 miles (56 km)

10 miles (16 km)

25 miles (40 km)

5 miles (8 km)

17 miles (28 km)

4

Alsek River

Alsek River_2

In what year did the Alsek River notably alter its flow by capturing the water of the Slims River?

2005

2010

2020

2015

2016

4

Alston Branch (Leipsic River tributary)

Alston Branch (Leipsic River tributary)_1

What is the approximate distance in miles from Alston Branch to Dover, Delaware?

12 miles

2.17 miles

3.49 miles

0.6 miles

6 miles

4

Alston Branch (Leipsic River tributary)

Alston Branch (Leipsic River tributary)_2

Alston Branch is classified as what order tributary within its river system?

Leipsic River tributary

2nd order

3rd order

Kent County tributary

1st order

4

Altamaha River

Altamaha River_1

What is the approximate drainage basin size of the Altamaha River, including its tributaries?

220 square miles

36,000 miles

137 square miles

14,000 km

14,000 square miles

4

Altamaha River

Altamaha River_2

What is the Altamaha River's length in kilometers?

220 km

220 miles

36,000 km

14,000 km

137 km

0

Alum Creek (Ohio)

Alum Creek (Ohio)_1

Alum Creek originates in which county before flowing south?

Licking County

Delaware County

Franklin County

Union County

Morrow County

4

Alum Creek (Ohio)

Alum Creek (Ohio)_2

What is the approximate length of Alum Creek in kilometers?

93 km

93 miles

150 km

58 miles

58 km

0

Alum Creek (South Dakota)

Alum Creek (South Dakota)_1

What is the primary geological characteristic that led to Alum Creek's naming?

Unusual pH level of the water

Presence of aluminum deposits

High mineral content in the sediment

Abundance of alum-producing bacteria

Naturally occurring bitter river water

4

Alum Creek (South Dakota)

Alum Creek (South Dakota)_2

In which U.S. state is Alum Creek located?

North Dakota

Wyoming

South Dakota

Nebraska

Montana

2

Alum Fork

Alum Fork_1

Alum Fork is a tributary of which larger waterway?

Ohio River

Alum Creek

West Virginia River

Kanawha River

Leading Creek

4

Alum Fork

Alum Fork_2

The distinctive characteristic of Alum Fork's water that gives it its name is the presence of what chemical compound?

Nitrate

Sulfate

Chloride

Phosphate

Alum

4

Amargosa River

Amargosa River_1

What is the approximate length of the Amargosa River in miles?

143 miles

298 miles

42 miles

26 miles

185 miles

4

Amargosa River

Amargosa River_2

A protected segment of the Amargosa River, designated as National Wild and Scenic, spans how many kilometers between Shoshone and Dumont Dunes?

143 km

298 km

42 km

26 km

185 km

2

Amazon Creek

Amazon Creek_1

Amazon Creek is a tributary to which larger river system?

Coast Fork Willamette River

Willamette River

McKenzie River

Siuslaw River

Long Tom River

4

Amazon Creek

Amazon Creek_2

Relative to the Willamette River, what is the approximate size ranking of Amazon Creek within Eugene?

Fifth-largest waterway

Third-largest waterway

Fourth-largest waterway

Largest waterway

Second-largest waterway

4

American Crow Creek

American Crow Creek_1

What geographical feature is American Crow Creek?

A tributary

A river

A creek

A canal

A stream

4

American Crow Creek

American Crow Creek_2

According to tradition, who is credited with naming American Crow Creek?

The U.S. Geological Survey

Native American tribes

Early European settlers

Local conservationists

The Lewis and Clark Expedition

4

American Fork (river)

American Fork (river)_1

In which specific county in Utah is the American Fork River located?

Summit County

Salt Lake County

Davis County

Wasatch County

Utah County

4

American Fork (river)

American Fork (river)_2

What is the primary geographical designation of the American Fork River within Utah?

A tributary in Utah County, Utah, United States

A creek in Utah County, Utah, United States

A stream in Utah County, Utah, United States

A canal in Utah County, Utah, United States

A river in Utah County, Utah, United States

4

American Horse Creek

American Horse Creek_1

According to one prevailing theory, what is the primary origin of the name 'American Horse Creek'?

It is named after a prominent American explorer.

It is named after a famous American cavalry horse.

It is named after a historical battle involving American soldiers.

It is named after a type of wild horse found in America.

It is named after an Oglala Lakota chief named American Horse.

4

American Horse Creek

American Horse Creek_2

What alternative etymological explanation for 'American Horse Creek' involves a specific type of equine and an individual's occupation?

A treaty negotiation concerning the ownership of American horses.

A herd of wild horses discovered by an American naturalist.

The capture of a prized stallion belonging to an American settler.

The migration of a specific breed of horse from America.

An incident involving an Indian horse thief and his 'American horses'.

4

American River

American River_1

What is the primary natural phenomenon that feeds the American River?

Glacial melt from higher peaks

Seasonal monsoon rains from the south

Underground aquifer replenishment

Coastal fog condensation

Melting snowpack of the Sierra Nevada

4

American River

American River_2

Which historical event, initiated by a discovery at Sutter's Mill, significantly contributed to the large-scale settlement of California by European immigrants?

The construction of transcontinental railroads

The establishment of agricultural colonies

The discovery of oil reserves

The founding of the first missions

The California Gold Rush

4

American River (Washington)

American River (Washington)_1

Which river system is the American River a part of, ultimately leading to the Pacific Ocean?

Yukon River basin

Colorado River basin

Mississippi River basin

Snake River basin

Columbia River basin

4

American River (Washington)

American River (Washington)_2

What was the original name of the American River, according to historian Gretta Gossett?

Pleasant Valley Creek

Chinook Creek

Rainier Fork

American Lake Creek

Miners Creek

4

Americano Creek

Americano Creek_1

What is the combined total length of Americano Creek and the Estero Americano in miles?

7.5 miles

12.0 miles

9.2 miles

21.2 miles

16.7 miles

4

Americano Creek

Americano Creek_2

If Americano Creek flows westward, into which cardinal direction does the Estero Americano ultimately discharge?

West

South

East

Northeast

North

0

Ames Creek (South Santiam River tributary)

Ames Creek (South Santiam River tributary)_1

What is the approximate river mileage of Ames Creek from its confluence with the South Santiam River to its origin near Chimney Rock?

Around 10 miles

53 miles

Approximately 20 miles

Just under 40 miles

33 miles

4

Ames Creek (South Santiam River tributary)

Ames Creek (South Santiam River tributary)_2

At what geographical feature does Ames Creek merge with the South Santiam River?

U.S. Route 20

Chimney Rock

Linn County

The Cascade Range foothills

Sweet Home

4

Amite River

Amite River_1

What is the navigable length of the Amite River in miles?

188 miles

117 miles

59.5 miles

74 miles

37 miles

4

Amite River

Amite River_2

The Amite River originates as two forks in which U.S. state before flowing south into Louisiana?

Alabama

Mississippi

Texas

Arkansas

Louisiana

1

Ammonoosuc River

Ammonoosuc River_1

What is the approximate length of the Ammonoosuc River in kilometers?

100 km

55 km

144 km

72 km

89 km

4

Ammonoosuc River

Ammonoosuc River_2

Which of the following rivers is a tributary that the Ammonoosuc River collects before flowing into the Connecticut River?

Long Island Sound

Gale River

Connecticut River

Mount Washington River

Wild Ammonoosuc River

4

Amnicon River

Amnicon River_1

What geological feature is highlighted by the two major waterfalls along the Amnicon River, and what formations do they separate?

The Wisconsin Divide, separating metamorphic and igneous formations

The Amnicon Gorge, separating granite and shale formations

The Superior Uplift, separating limestone and quartzite formations

The Lake Superior Escarpment, separating sedimentary and volcanic formations

The Douglas Fault, separating basalt and sandstone formations

4

Amnicon River

Amnicon River_2

What was the primary historical use of the Amnicon River during the nineteenth century, and what was its significance for nearby developing towns?

Irrigation for agricultural expansion in central Douglas County

Water power generation for early industrial mills in Superior

Fishing and trade routes connecting to Lake Michigan

Transportation of iron ore to processing facilities in Duluth

Log transportation for building materials for Superior and Duluth

4

Amo Creek

Amo Creek_1

What is the geographical region where Amo Creek is located?

Denali Borough, Alaska

Yukon-Koyukuk Census Area, Alaska

Fairbanks North Star Borough, Alaska

Matanuska-Susitna Borough, Alaska

North Slope Borough, Alaska

4

Amo Creek

Amo Creek_2

The name 'Amo' for this creek is derived from which linguistic origin?

Athabaskan phrase for 'salmon spawning'

Native Alaskan word meaning 'fast-flowing'

Inuit term for 'northern lights'

Aleut dialect signifying 'mountain stream'

Eskimo word meaning 'wolf'

4

Amon Creek

Amon Creek_1

What is the approximate total length of Amon Creek, from the source of its East Fork to its mouth, in miles?

15 miles

21 miles

10 miles

25 miles

13 miles

4

Amon Creek

Amon Creek_2

Which of the following describes the general flow direction of the West Fork of Amon Creek as it exits Badger Canyon?

Westbound

Southbound

Eastbound

Northwestbound

Northbound

4

Amtkeli

Amtkeli_1

What is the approximate catchment area of the Amtkeli River in square miles?

50 sq mi

398 sq mi

1030 sq mi

200 sq mi

154 sq mi

4

Amtkeli

Amtkeli_2

Which of the following best describes the typical seasonal flow pattern of the Amtkeli River?

Floods in autumn and winter, low flows in spring

Consistent flow year-round with minor fluctuations

Floods in late spring and summer, low flows in winter

Floods in winter, low flows in summer

Low flows in late spring and summer, floods in winter

2

Ana River

Ana River_1

What is the approximate length of the Ana River in miles?

15 miles

11 miles

5 miles

9 miles

7 miles

4

Ana River

Ana River_2

Which rare fish species, found in the Ana River, is specifically mentioned as habitat within the Summer Lake Wildlife Area?

Winter Ridge Tui chub

Great Basin Tui chub

Oregon Tui chub

Ana Reservoir Tui chub

Summer Lake Tui chub

4

Anacostia River

Anacostia River_1

What is the approximate length of the Anacostia River in miles?

9.7 miles

14.0 miles

7.8 miles

14.0 kilometers

8.7 miles

4

Anacostia River

Anacostia River_2

Into which major river does the Anacostia River ultimately empty?

The Anacostia River itself

The Washington Channel

The Chesapeake Bay

The Atlantic Ocean

The Potomac River

4

Anahulu River

Anahulu River_1

What is the approximate length of the Anahulu River in miles?

6.5 miles

11.4 miles

10 miles

8.2 miles

7.1 miles

4

Anahulu River

Anahulu River_2

The Hawaiian meaning of 'Anahulu' translates to what duration?

One day

Seven days

Eleven days

Fourteen days

Ten days

4

Anaktuvuk River

Anaktuvuk River_1

What is the approximate length of the Anaktuvuk River in miles?

120 miles

217 miles

150 miles

100 miles

135 miles

4

Anaktuvuk River

Anaktuvuk River_2

Which mountain lies on the watershed divide between the Arctic Coastal Plain and the Koyukuk River, feeding the Anaktuvuk River via Graylime Creek?

Mount Schrader

Fan Mountain

Alapah Mountain

Mount Marshall

Limestack Mountain

4

Anchor River

Anchor River_1

What is the approximate distance between the Anchor River's mouth and Homer?

20 miles (32 km)

30 miles (48 km)

10 miles (16 km)

5 miles (8 km)

15 miles (24 km)

4

Anchor River

Anchor River_2

The Anchor River and Fritz Creek Critical Habitat Area is primarily designated to protect which specific type of wildlife?

Bears

Salmon

Bald Eagles

Sea Otters

Moose

4

Anclote River

Anclote River_1

What is the approximate length of the Anclote River in kilometers?

29 miles

29 km

47 miles

76 km

47 km

4

Anclote River

Anclote River_2

The Anclote River's westward flow terminates into which major body of water?

Lake Okeechobee

Atlantic Ocean

Tampa Bay

Caloosahatchee River

Gulf of Mexico

4

Anderson Creek (Pennsylvania)

Anderson Creek (Pennsylvania)_1

What is the total vertical drop of Anderson Creek?

38.0 ft

1450 ft

1175 ft

23.6 ft

275 ft

4

Anderson Creek (Pennsylvania)

Anderson Creek (Pennsylvania)_2

Anderson Creek is classified as a whitewater stream with what approximate difficulty rating?

Class IV-V

Class III-IV

Class II-III+

Class I-III

Class I-II

2

Anderson Fork

Anderson Fork_1

Anderson Fork is a stream located in which two Ohio counties?

Lucas and Wood counties

Hamilton and Clermont counties

Franklin and Delaware counties

Stark and Summit counties

Clinton and Greene counties

4

Anderson Fork

Anderson Fork_2

The naming of Anderson Fork is attributed to which individual?

Thomas Jefferson

William H. Harrison

George Washington

Andrew Jackson

Richard C. Anderson

4

Anderson River (Indiana)

Anderson River (Indiana)_1

What is the approximate distance in miles the Anderson River flows before joining the Ohio River?

55.0 miles

81.1 miles

45.9 miles

70.2 miles

50.4 miles

4

Anderson River (Indiana)

Anderson River (Indiana)_2

Which of the following bodies of water is the Anderson River a tributary of, ultimately connecting to the Mississippi River watershed?

The Ohio River's Middle Fork

The Mississippi River

The Wabash River

The Hoosier River

The Ohio River

4

Andi Koysu

Andi Koysu_1

What is the total drainage basin area of the Andi Koysu river in square miles?

1,760 sq mi

4,810 sq mi

1,960 sq mi

2,860 sq mi

1,860 sq mi

4

Andi Koysu

Andi Koysu_2

If the Andi Koysu river's length is considered including its longest source river, what is its total length in miles?

119 mi

192 mi

89 mi

109 mi

144 mi

0