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Ararat River
Ararat River_1
The Ararat River's watershed ultimately contributes to which major ocean?
Indian Ocean
Pacific Ocean
Arctic Ocean
Southern Ocean
Atlantic Ocean
4
Ararat River
Ararat River_2
Approximately how far northwest of East Bend does the Ararat River join the Yadkin River?
3 miles
5 miles
10 km
15 miles
8 km
1
Arastradero Creek
Arastradero Creek_1
What is the approximate length of Arastradero Creek in kilometers?
3.0 km
2.4 km
5.3 km
4.5 km
3.9 km
4
Arastradero Creek
Arastradero Creek_2
Arastradero Creek originates in which mountain range?
Santa Clara Foothills
Palo Alto Foothills
San Francisco Mountains
Arastradero Range
Santa Cruz Mountains
4
Aravaipa Creek
Aravaipa Creek_1
What is the approximate distance in kilometers that Aravaipa Creek flows through the Aravaipa Canyon Wilderness before meeting the San Pedro River?
2709 km
9 km
35 km
8889 km
14 km
4
Aravaipa Creek
Aravaipa Creek_2
Aravaipa Creek originates at Durkee Canyon on the southeast flank of which mountain range?
Madrean Sky Islands
Santa Teresa Mountains
Pinaleno Mountains
San Pedro Mountains
Galiuro Mountains
4
Arbuckle Creek
Arbuckle Creek_1
What is the approximate length of Arbuckle Creek in miles?
15 miles
20 miles
30 miles
50 miles
25 miles
4
Arbuckle Creek
Arbuckle Creek_2
Arbuckle Creek originates from which lake?
Lake Kissimmee
Lake Arbuckle
Lake Okeechobee
Lake Marion
Lake Istokpoga
1
Arch Creek (Montana)
Arch Creek (Montana)_1
In which U.S. county is Arch Creek located?
Missoula County
Yellowstone County
Gallatin County
Flathead County
Carbon County
4
Arch Creek (Montana)
Arch Creek (Montana)_2
What geographical feature inspired the naming of Arch Creek?
A series of cascading waterfalls
A prominent rock formation
A distinctive bend in the river
A unique geological cave
A nearby natural arch
4
Archers Fork
Archers Fork_1
Archers Fork is a tributary to which larger river system?
Hocking River
Ohio River
Muskingum River
Great Miami River
Little Muskingum River
4
Archers Fork
Archers Fork_2
In which county is Archers Fork located?
Morgan County
Athens County
Meigs County
Noble County
Washington County
4
Arches Fork
Arches Fork_1
What is the primary geographical feature that Arches Fork is identified as in West Virginia?
A tributary
A river
A creek
A canal
A stream
4
Arches Fork
Arches Fork_2
The naming of Arches Fork is directly attributed to which individual?
Archibald Brown
Archibald Smith
Archibald Jones
Archibald Green
Archibald Woods
4
Arenosa Creek
Arenosa Creek_1
Arenosa Creek is located within which two Texas counties?
Matagorda County and Victoria County
Victoria County and Calhoun County
Jackson County and Goliad County
Calhoun County and Jackson County
Victoria County and Jackson County
4
Arenosa Creek
Arenosa Creek_2
The name 'Arenosa' is derived from which language?
French
Portuguese
Italian
Latin
Spanish
4
Argun (Caucasus)
Argun (Caucasus)_1
What is the total area of the Argun River's drainage basin in square miles?
92 sq mi
3,390 sq mi
148 sq mi
3,390 km²
1,310 sq mi
4
Argun (Caucasus)
Argun (Caucasus)_2
Which of the following rivers is the Argun River an affluent of?
Orga
Sunzha
Terek
Chantiy
Argun
1
Arikaree River
Arikaree River_1
What is the primary purpose of the Arikaree River's designation within the Colorado Natural Areas Program?
To serve as a primary source of irrigation for agricultural lands.
To protect native and uncommon species that may be endangered or threatened.
To provide recreational opportunities for fishing and boating.
To monitor and control floodwaters in the Great Plains region.
To facilitate commercial navigation and transportation.
1
Arikaree River
Arikaree River_2
Considering its geographical flow, what river does the Arikaree River ultimately merge with in Nebraska?
The North Fork of the Republican River
The Missouri River
The Republican River
The South Fork of the Republican River
The South Platte River
0
Arivaca Creek
Arivaca Creek_1
What is the approximate length of Arivaca Creek in miles?
5 miles
8.9 miles
2 miles
6 miles
5.5 miles
4
Arivaca Creek
Arivaca Creek_2
Which of the following is located in the upper reaches of Arivaca Creek and is described as a rare swamp-like desert wetland area?
Wilbur Ranch House
Buenos Aires NWR
Brawley Wash
Arivaca Valley
Arivaca Cienega
4
Arkansas River
Arkansas River_1
What is the mean discharge of the Arkansas River in cubic feet per second?
440,000 cubic feet per second
1,100 cubic feet per second
170,000 cubic feet per second
2,364 cubic feet per second
40,000 cubic feet per second
4
Arkansas River
Arkansas River_2
Which U.S. state marks the mouth of the Arkansas River?
Arkansas
Colorado
Kansas
Missouri
Oklahoma
0
Armand Bayou
Armand Bayou_1
Armand Bayou is primarily known for its proximity to which major Texas estuary?
San Antonio Bay
Corpus Christi Bay
Matagorda Bay
Trinity Bay
Galveston Bay
4
Armand Bayou
Armand Bayou_2
The environmental leadership for which Armand Bayou and its nature center are named was demonstrated during what decade?
1980s
1950s
1970s
1990s
1960s
4
Armstrong Creek (West Virginia)
Armstrong Creek (West Virginia)_1
What is the approximate total length of Armstrong Creek and its Left Fork combined?
13.8 miles (22.2 km)
14.2 miles (22.9 km)
11.5 miles (18.5 km)
16.4 miles (26.4 km)
11.5 miles (18.5 km)
2
Armstrong Creek (West Virginia)
Armstrong Creek (West Virginia)_2
From what unincorporated community is the Right Fork Armstrong Creek approximately 1.4 miles north-northeast?
Powellton
Westerly
Elkridge
Kimberly
McDunn
1
Armstrong River (Minnesota)
Armstrong River (Minnesota)_1
What is the primary reason for the naming of the Armstrong River in Minnesota?
It was named for a rare indigenous plant found along its banks.
It was named for a mining prospector.
It was named after a significant historical battle site.
It was named after a geological formation in the region.
It was named after a prominent local politician.
1
Armstrong River (Minnesota)
Armstrong River (Minnesota)_2
The Armstrong River is a geographical feature located within which U.S. state?
Minnesota
Iowa
North Dakota
South Dakota
Wisconsin
0
Army Creek
Army Creek_1
What is the approximate area of the Army Creek watershed in square kilometers?
1.6 km2
6.4 km2
10 km2
4 km2
26 km2
4
Army Creek
Army Creek_2
The floodgate on Army Creek, located just downstream of DE 9, primarily serves to prevent what from influencing the stream?
Superfund site contamination
Industrial runoff
Urban development
Airport emissions
Tidal influence
4
Arnell Creek (Love Creek tributary)
Arnell Creek (Love Creek tributary)_1
What is the stated length of Arnell Creek in miles?
3.90 mi
4.97 mi
3.00 mi
5.00 mi
3.09 mi
4
Arnell Creek (Love Creek tributary)
Arnell Creek (Love Creek tributary)_2
Arnell Creek is classified as what order tributary?
4th order
1st order
3rd order
5th order
2nd order
1
Arnold Creek (Huntington Creek tributary)
Arnold Creek (Huntington Creek tributary)_1
What is the total watershed area of Arnold Creek in square miles?
12.2 square miles
5.2 square miles
8.4 square miles
206 square miles
4.72 square miles
4
Arnold Creek (Huntington Creek tributary)
Arnold Creek (Huntington Creek tributary)_2
Arnold Creek is classified as Class A Wild Trout Waters for what proportion of its entire length?
The portion flowing through Ross Township
Its entire length
Only in areas within State Game Lands Number 206
The section downstream of Pennsylvania Route 118
Approximately half of its length
1
Arnold Creek (West Virginia)
Arnold Creek (West Virginia)_1
What is the total drainage area of Arnold Creek in square miles?
17.5 square miles
10.9 square miles
34.7 km2
90 square miles
34.7 square miles
4
Arnold Creek (West Virginia)
Arnold Creek (West Virginia)_2
Arnold Creek is formed by the confluence of its left and right forks. What is the approximate distance between the source of the Left Fork Arnold Creek and West Union?
4.9 miles
2.4 miles
3.5 miles
7.9 miles
2.2 miles
4
Aroostook River
Aroostook River_1
What is the approximate length of the Aroostook River in kilometers?
150 km
112 km
200 km
180 miles
180 km
4
Aroostook River
Aroostook River_2
The Aroostook River is a tributary to which larger river system?
Saint John River Basin
Saint Lawrence River
Penobscot River
Saint John River Tributary
Saint John River
4
Arrow Creek (Fergus County, Montana)
Arrow Creek (Fergus County, Montana)_1
What is the approximate length of Arrow Creek in miles?
60 miles
73 miles
30 miles
50 miles
45 miles
4
Arrow Creek (Fergus County, Montana)
Arrow Creek (Fergus County, Montana)_2
Arrow Creek originates in which mountain range?
Missouri Mountains
Highwood Mountains
Gros Ventre Mountains
Rocky Mountains
Lewis and Clark National Forest
1
Arrow Creek (Fresno County, California)
Arrow Creek (Fresno County, California)_1
Arrow Creek is located within which protected federal land designation?
Sierra National Forest
Sequoia National Forest
Yosemite National Park
Ansel Adams Wilderness
Kings Canyon National Park
4
Arrow Creek (Fresno County, California)
Arrow Creek (Fresno County, California)_2
Arrow Creek is a tributary of which larger river system?
San Joaquin River
North Fork Kings River
Merced River
Kaweah River
South Fork Kings River
4
Arroyo Bayo
Arroyo Bayo_1
Arroyo Bayo is a perennial stream that is approximately how many miles long?
5 miles
13 miles
10 miles
15 miles
8 miles
4
Arroyo Bayo
Arroyo Bayo_2
In which mountain range is Arroyo Bayo located?
Coast Ranges
Santa Cruz Mountains
Sierra Nevada
Transverse Ranges
Diablo Range
4
Arroyo Calabasas
Arroyo Calabasas_1
What is the approximate length of Arroyo Calabasas in miles?
7.5 miles
11.3 miles
6.5 miles
10.0 miles
7.0 miles
4
Arroyo Calabasas
Arroyo Calabasas_2
Arroyo Calabasas is a tributary of which larger river system?
Ballona Creek
Los Angeles River
Santa Clara River
Verdugo Wash
San Gabriel River
1
Arroyo Colorado
Arroyo Colorado_1
What is the approximate eastward flow distance of the Arroyo Colorado River before it reaches its terminus?
143 miles
143 kilometers
89 kilometers
Approximately 100 miles
89 miles
4
Arroyo Colorado
Arroyo Colorado_2
The Spanish origin of the name 'Arroyo Colorado' directly translates to which geographical feature?
Red stream
Colorado river
Arroyo Grande
Colorado creek
Red creek bed
4
Arroyo Conejo
Arroyo Conejo_1
What is the total watershed area of Arroyo Conejo in square kilometers?
36 km2
57 km2
110 km2
343 km2
150 km2
4
Arroyo Conejo
Arroyo Conejo_2
Arroyo Conejo is part of which larger watershed system?
Pleasant Valley basin watershed
Calleguas Creek watershed
Conejo Valley watershed
Wildwood Canyon watershed
Santa Rosa Valley watershed
1
Arroyo Corte Madera del Presidio
Arroyo Corte Madera del Presidio_1
What is the approximate area of the catchment basin for Arroyo Corte Madera del Presidio?
21 square miles (54.4 km2)
4.1 square miles (10.6 km2)
6.6 square miles (17.1 km2)
10 square miles (25.9 km2)
8 square miles (21 km2)
4
Arroyo Corte Madera del Presidio
Arroyo Corte Madera del Presidio_2
Which body of water serves as the discharge point for Arroyo Corte Madera del Presidio?
Mount Tamalpais
San Francisco Bay
Point San Quentin
Corte Madera Creek
Richardson Bay
4
Arroyo Dolores
Arroyo Dolores_1
What is the primary geographical location of the Arroyo Dolores?
Our Lady of Sorrow Creek
Mission Creek Channel
China Basin
Spanish California
San Francisco, California
4
Arroyo Dolores
Arroyo Dolores_2
Where does the Arroyo Dolores currently drain into above ground?
The Pacific Ocean
China Basin
San Francisco Bay
The culverted portion
Mission Creek Channel
4
Arroyo Grande Creek
Arroyo Grande Creek_1
What is the approximate length of Arroyo Grande Creek in kilometers?
18 km
22 km
56 km
40 km
35 km
4
Arroyo Grande Creek
Arroyo Grande Creek_2
From which mountain range does Arroyo Grande Creek originate?
Transverse Ranges
Sierra Nevada
San Gabriel Mountains
Coast Ranges
Santa Lucia Range
4
Arroyo Hondo (Santa Clara County)
Arroyo Hondo (Santa Clara County)_1
What is the precise length of Arroyo Hondo in miles?
13.9 miles
20.9 miles
10.3 miles
20.0 miles
13.0 miles
4
Arroyo Hondo (Santa Clara County)
Arroyo Hondo (Santa Clara County)_2
Arroyo Hondo is formed by the confluence of which two creeks?
Isabel Creek and Calaveras Creek
Oak Creek and Poverty Creek
Calaveras Creek and Smith Creek
Ridge Creek and Hondo Creek
Smith Creek and Isabel Creek
4
Arroyo Hondo (Santa Clara County)
Arroyo Hondo (Santa Clara County)_1
What is the approximate length of Arroyo Hondo in kilometers?
15.5 km
13.0 km
25.0 km
30.0 km
20.9 km
4
Arroyo Hondo (Santa Clara County)
Arroyo Hondo (Santa Clara County)_2
Arroyo Hondo is formed by the confluence of which two creeks?
Isabel Creek and Milpitas Creek
Oak Creek and Poverty Creek
Calaveras Creek and Smith Creek
Ridge Creek and Hondo Creek
Smith Creek and Isabel Creek
4
Arroyo Las Positas
Arroyo Las Positas_1
Arroyo Las Positas originates from the confluence of which two watercourses north of Livermore?
Cayetano Creek and Arroyo Hondo
Arroyo Mocho and Arroyo Seco
Arroyo Las Positas and Arroyo Mocho
Arroyo Seco and Arroyo Hondo
Arroyo Seco and Cayetano Creek
4
Arroyo Las Positas
Arroyo Las Positas_2
What is the approximate length of Arroyo Las Positas in kilometers?
7.4 miles
11.9 miles
11.9 km
19.3 km
7.4 km
2
Arroyo León
Arroyo León_1
What is the approximate length of Arroyo León in kilometers?
10.0 km
6.5 km
16.0 km
11.5 km
10.5 km
4
Arroyo León
Arroyo León_2
Arroyo León is a tributary of which other creek?
Bear Creek
San Mateo Creek
Lion Creek
Coyote Creek
Pilarcitos Creek
4
Arroyo Mocho
Arroyo Mocho_1
What is the total length of Arroyo Mocho in kilometers?
34.7 km
34.7 km
55.8 miles
80.5 km
55.8 km
4
Arroyo Mocho
Arroyo Mocho_2
After Arroyo Mocho joins South San Ramon Creek, what is the name of the resulting stream before it flows into Alameda Creek?
Arroyo Mocho
South San Ramon Creek
Alameda Creek
San Francisco Bay
Arroyo de la Laguna
4
Arroyo Seco (Alameda County)
Arroyo Seco (Alameda County)_1
What is the maximum depth at which groundwater flow is discontinuous across the Tesla Fault?
18.8 feet (5.7 m)
15 feet (50 m)
11.7 feet (3.6 m)
50 km
50 feet (15 m)
4
Arroyo Seco (Alameda County)
Arroyo Seco (Alameda County)_2
Arroyo Seco empties into which watercourse?
Mocho Subbasin
Arroyo Mocho
Arroyo Seco watershed
Livermore Valley watershed
Arroyo Las Positas
4
Arroyo Seco (Los Angeles County)
Arroyo Seco (Los Angeles County)_1
What is the approximate length of the Arroyo Seco in kilometers?
24.9 miles
24.9 km
40.1 miles
16.2 km
40.1 km
4
Arroyo Seco (Los Angeles County)
Arroyo Seco (Los Angeles County)_2
Which historical figure is credited with naming the Arroyo Seco, and what was the basis for this naming?
A Spanish explorer, due to the canyon's dry appearance.
Chief Hahamog-na, due to the canyon having the least water observed.
Gaspar de Portolà, due to the canyon's significant water flow.
Gaspar de Portolà, due to the canyon's extensive length.
Gaspar de Portolà, due to the canyon having the least water observed.
4
Arroyo Seco (Salinas River tributary)
Arroyo Seco (Salinas River tributary)_1
What is the approximate length of the Arroyo Seco in miles?
50 miles
64 miles
30 miles
20 miles
40 miles
4
Arroyo Seco (Salinas River tributary)
Arroyo Seco (Salinas River tributary)_2
The Arroyo Seco is a primary tributary to which larger river system?
Carmel River
Salinas River
Monterey River
Pajaro River
Big Sur River
1
Arroyo Seco (Sonoma County)
Arroyo Seco (Sonoma County)_1
What is the approximate geological age of the Mayacamas mountain block that Arroyo Seco Creek drains?
Holocene era
Pleistocene era
Pliocene era
Cretaceous era
Miocene era
4
Arroyo Seco (Sonoma County)
Arroyo Seco (Sonoma County)_2
Arroyo Seco Creek's watershed covers an area of approximately how many square miles?
12 square miles
6.9 square miles
30 square miles
4 square miles
11.4 square miles
4
Arroyo Simi
Arroyo Simi_1
What is the total length of the Arroyo Simi in miles from its origin to its confluence with Calleguas Creek?
31 miles
12 miles
7 miles
343 miles
19 miles
4
Arroyo Simi
Arroyo Simi_2
Which of the following is NOT listed as a tributary or drain to the Arroyo Simi?
White Oak Creek
Sycamore Creek
Tapo Canyon Creek
Moorpark Drain
Alamos Canyon Creek
3
Arroyo Trabuco
Arroyo Trabuco_1
What is the approximate drainage area of the Arroyo Trabuco watershed in square miles?
140 square miles
35 square miles
22 square miles
40 square miles
54 square miles
4
Arroyo Trabuco
Arroyo Trabuco_2
According to local legend, what type of firearm is the Arroyo Trabuco named after, and what event led to this naming?
A pistol fired in celebration by the Spanish colonizers.
A blunderbuss lost by a Franciscan missionary friar during the Gaspar de Portolà Expedition.
A rifle dropped by John 'Don Juan' Forster while establishing Rancho Trabuco.
A cannon that was part of an early settlement's defense.
A musket lost during a hunting expedition by the Luiseño people.
1
Arroyo Valle
Arroyo Valle_1
What is the approximate total length of the Arroyo Valle in kilometers?
62.1 km
36.4 km
45.2 km
30.0 km
58.6 km
4
Arroyo Valle
Arroyo Valle_2
Which of the following waterways is directly downstream of Arroyo Valle before reaching Alameda Creek?
Arroyo Seco
San Francisco Bay
Lake Del Valle
Alameda River
Arroyo de la Laguna
4
Arroyo Viejo
Arroyo Viejo_1
What is the approximate length of Arroyo Viejo in miles?
6.0 miles
8.2 miles
4.0 miles
3.1 miles
5.1 miles
4
Arroyo Viejo
Arroyo Viejo_2
Arroyo Viejo originates in which California county?
Santa Clara County
San Francisco County
Contra Costa County
Marin County
Alameda County
4
Arroyo de en Medio
Arroyo de en Medio_1
What is the approximate length of Arroyo de en Medio in kilometers?
1.0 km
2.5 km
5.0 km
3.5 km
4.0 km
4
Arroyo de en Medio
Arroyo de en Medio_2
Arroyo de en Medio originates on the western slopes of which prominent geographical feature?
Pacific Highlands
San Mateo Peak
Half Moon Ridge
Coastal Divide
Montara Mountain
4
Arroyo de la Laguna
Arroyo de la Laguna_1
What is the primary river into which Arroyo de la Laguna flows, and what is its ultimate destination?
Arroyo Valle, which flows into the Pacific Ocean
South San Ramon Creek, which flows into the Pacific Ocean
Arroyo Mocho, which flows into the Sacramento River
Sinbad Creek, which flows into the San Francisco Bay
Alameda Creek, which flows into the San Francisco Bay
4
Arroyo de la Laguna
Arroyo de la Laguna_2
Which two named creeks are identified as the direct tributaries that form the origin of Arroyo de la Laguna?
Sinbad Creek and South San Ramon Creek
Arroyo Valle and Sinbad Creek
Arroyo Mocho and Arroyo Valle
Arroyo de la Laguna and Alameda Creek
South San Ramon Creek and Arroyo Mocho
4
Artichoke Creek (South Dakota)
Artichoke Creek (South Dakota)_1
What geographical feature is the primary reason for the naming of Artichoke Creek?
The discovery of an ancient artichoke cultivation site
The abundance of edible tubers found near its banks
The unique shape of the riverbed resembling an artichoke
The vibrant green color of the water, similar to artichoke leaves
The presence of wild artichokes along its course
4
Artichoke Creek (South Dakota)
Artichoke Creek (South Dakota)_2
In which U.S. state is Artichoke Creek located?
Wyoming
North Dakota
Montana
Nebraska
South Dakota
4
Artichoke River (Massachusetts)
Artichoke River (Massachusetts)_1
What is the approximate length of the Artichoke River in kilometers?
1.5 km
1.2 km
3.0 km
2.5 km
1.9 km
4
Artichoke River (Massachusetts)
Artichoke River (Massachusetts)_2
Which of the following is NOT one of the dams located along the Artichoke River's course?
Merrimack Dam
Lower Artichoke Dam
Upper Artichoke Dam
All of the above are on the river
Emory Lane Dam
0
Ash Clove Brook
Ash Clove Brook_1
In which U.S. state is Ash Clove Brook located?
Delaware
Pennsylvania
New Jersey
Connecticut
New York
4
Ash Clove Brook
Ash Clove Brook_2
Ash Clove Brook is a tributary of which other named brook?
Oak Stream
Willow Creek
Maple Run
Pine Brook
Trout Brook
4
Ash Creek (Arizona)
Ash Creek (Arizona)_1
Ash Creek is situated within which federally protected mountain range?
Santa Catalina Mountain Range
Chiricahua Mountain Range
Galiuro Mountain Range
Dragoon Mountain Range
Pinaleño Mountain Range
4
Ash Creek (Arizona)
Ash Creek (Arizona)_2
Approximately how far is the closest major city to Ash Creek?
25 miles
11 miles
18 miles
32 miles
7 miles
4
Ash Creek (California)
Ash Creek (California)_1
What is the approximate distance from Ash Creek's origin to the town of Madeline?
56 miles (8.0 km)
35 miles (56 km)
2 miles (3.2 km)
8 miles (5 km)
5 miles (8.0 km)
4
Ash Creek (California)
Ash Creek (California)_2
Ash Creek flows through which two counties before joining the Pit River?
Modoc County and Siskiyou County
Lassen County and Modoc County
Lassen County and Tehama County
Plumas County and Lassen County
Modoc County and Shasta County
1
Ash Creek (Minnesota)
Ash Creek (Minnesota)_1
Ash Creek is a tributary of which larger river system?
Red River
Minnesota River
Mississippi River
St. Croix River
Rock River
4
Ash Creek (Minnesota)
Ash Creek (Minnesota)_2
In which U.S. county is Ash Creek located?
Olmsted County, Minnesota
Ramsey County, Minnesota
Hennepin County, Minnesota
Dakota County, Minnesota
Rock County, Minnesota
4