Alaska

Arizona

Utah

Yukon

Northwest Territories

District of Columbia

Florida

Idaho

New Hampshire

Rhode Island

Vermont

Washington

Wyoming

Nunavut

Montana

Maine

North Dakota

Kentucky

Nova Scotia

Virginia

Delaware

Prince Edward Island

Saskatchewan

Mississippi

West Virginia

Nebraska

Texas

Missouri

Louisiana

North Carolina

Oregon

New Brunswick

Alabama

New Mexico

Kansas

Wisconsin

British Columbia

Newfoundland and Labrador

New Jersey

South Carolina

Michigan

Alberta

Connecticut

Pennsylvania

Colorado

Nevada

Massachusetts

Georgia

New York

Maryland

Québec

Manitoba

Oklahoma

Tennessee

Ontario

California

Arkansas

South Dakota

Ohio

Indiana

Minnesota

Iowa

Illinois

None

A map shows major drainage basins depicted as blue dashed lines. Some of the notable basins include Columbia, Colorado in North America; Amazon, Orinoco in South America; Niger in Africa; Danube in Europe; Indus in Asia; and Murray-Darling in Australia.

The world's drainage basins: land areas where surface water converges to a single point

Major Drainage Basins

World

USGS

Hawaii

Sea-surface temperature anomalies during El Niño. The most intense warming (2 to 2.25 degrees Celsius, dark brown) occurs off the coast of South America. Cooler areas (negative 2.25 to negative 2 degrees Celsius, dark blue) are in the Arctic Ocean.

A composite of sea-surface temperature anomalies during El Niño from November to March during the following years: 1958, 1966, 1973, 1983, 1987, 1992, 1996, and 1998. When sea-surface temperatures in the tropical eastern Pacific rise well above normal, it is known as an El Niño event.

Sea-Surface Temperature Anomalies: El Niño

Oceans

NOAA

Change in degrees Celsius (°C)

Anthropogenic Biomes

Areas at Risk of Soil Degradation

Average Annual Precipitation

Biomes

Climate Zones

Global Mean Temperature, January

Global Mean Temperature, July

Global Surface Warming: Worst-Case Projections (NASA)

Insolation

Land Cover

Major Soil Orders

Prevailing Agricultural Practices

World Elevations

Display by:	Major Drainage Basins	Sea-Surface Temperature Anomalies: El Niño
	Major Drainage Basins	-0.25 to 0.25	0.75 to 1.0	1.0 to 1.25	1.25 to 1.5	1.5 to 1.75
Arizona	95.5%
Utah	47.8%
Yukon	26.5%
Northwest Territories	44.0%
District of Columbia	100%
Idaho	0.316%
New Hampshire	0.302%
Vermont	4.27%
Wyoming	21.0%
Montana	0.445%
North Dakota	42.0%
Kentucky	100%
Saskatchewan	46.3%
Mississippi	49.8%
West Virginia	15.3%
Nebraska	100%
Missouri	100%
Oregon	2.50%
Alabama	13.6%
New Mexico	54.2%
Kansas	100%
Wisconsin	69.3%
South Carolina	99.9%
Michigan	100%
Alberta	29.9%
Connecticut	1.05%
Pennsylvania	64.1%
Colorado	7.14%
Nevada	10.9%
Georgia	2.66%
Québec	64.3%
Manitoba	47.7%
Oklahoma	100%
Tennessee	99.9%
Ontario	11.8%
Arkansas	100%
South Dakota	0.773%
Ohio	71.3%
Indiana	89.5%
Minnesota	35.3%
Iowa	100%
Illinois	98.7%
Alaska	98.0%	0.318%
Florida	98.4%	0.596%
Rhode Island	92.6%	4.64%
Washington	27.9%	0.513%
Nunavut	96.5%	0.352%
Maine	23.3%	0.133%
Nova Scotia	94.2%	0.847%
Virginia	55.4%	0.126%
Delaware	97.0%	0.762%
Prince Edward Island	61.9%	1.25%		0.264%
Texas	18.4%	0.183%
Louisiana	91.0%	0.184%
Hawaii		1.74%	1.20%	0.113%	0.444%	2.10%
North Carolina	12.8%	0.319%
New Brunswick	40.2%	0.522%
British Columbia	31.2%	0.126%
Newfoundland and Labrador	0.795%	0.392%
New Jersey	97.8%	0.329%
Massachusetts	2.45%	1.78%
New York	45.5%	0.105%
Maryland	93.5%	0.874%
California	2.37%	0.110%