Skip to main content
U.S. flag

An official website of the United States government

Science

Our fish health program is built around four science themes, “Disease Control Tools”, “Disease Ecology”, “Disease Surveillance”, and “Environmental Health.”  These themes are interrelated and often overlapping. Investigations cover both basic and applied research aimed at providing scientific information relevant to the needs of federal, tribal, state, and local natural resource managers.

link

Disease Control Tools

link

Disease Ecology

link

Disease Surveillance

link

Environmental Health

FAQs

What is the Earth's "water cycle?"

The water cycle, also known as the hydrologic cycle, describes the continuous movement of water as it makes a circuit from the oceans to the atmosphere to the Earth and on again. Most of Earth's water is in the oceans. The sun, which drives the water cycle, heats water in the oceans. Some of it evaporates as vapor into the air. Rising vapor cools and condenses into clouds. Cloud particles grow and...

link

What is the Earth's "water cycle?"

The water cycle, also known as the hydrologic cycle, describes the continuous movement of water as it makes a circuit from the oceans to the atmosphere to the Earth and on again. Most of Earth's water is in the oceans. The sun, which drives the water cycle, heats water in the oceans. Some of it evaporates as vapor into the air. Rising vapor cools and condenses into clouds. Cloud particles grow and...

Learn More

How much of the Earth's water is stored in glaciers?

About 2.1% of all of Earth's water is frozen in glaciers. 97.2% is in the oceans and inland seas 2.1% is in glaciers 0.6% is in groundwater and soil moisture less than 1% is in the atmosphere less than 1% is in lakes and rivers less than 1% is in all living plants and animals. About three-quarters of Earth's freshwater is stored in glaciers. Therefore, glacier ice is the second largest reservoir...

link

How much of the Earth's water is stored in glaciers?

About 2.1% of all of Earth's water is frozen in glaciers. 97.2% is in the oceans and inland seas 2.1% is in glaciers 0.6% is in groundwater and soil moisture less than 1% is in the atmosphere less than 1% is in lakes and rivers less than 1% is in all living plants and animals. About three-quarters of Earth's freshwater is stored in glaciers. Therefore, glacier ice is the second largest reservoir...

Learn More

How important is groundwater?

Groundwater, which is in aquifers below the surface of the Earth, is one of the Nation's most important natural resources. Groundwater is the source of about 37 percent of the water that county and city water departments supply to households and businesses (public supply). It provides drinking water for more than 90 percent of the rural population who do not get their water delivered to them from...

link

How important is groundwater?

Groundwater, which is in aquifers below the surface of the Earth, is one of the Nation's most important natural resources. Groundwater is the source of about 37 percent of the water that county and city water departments supply to households and businesses (public supply). It provides drinking water for more than 90 percent of the rural population who do not get their water delivered to them from...

Learn More

Education

Questions and Answers About Salmon

A list of questions asked by students and answers provided by a USGS-WFRC Scientist.

link

Questions and Answers About Salmon

A list of questions asked by students and answers provided by a USGS-WFRC Scientist.

Learn More

Teaching Resources

Parasite collection and teaching slides

link

Teaching Resources

Parasite collection and teaching slides

Learn More