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 |
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