Skip to main content
U.S. flag

An official website of the United States government

Images

See more about our science.

Filter Total Items: 125
A concrete dam structure along a wooded river with a metal chute and chain‑link fencing beside a gray building.
Eden Mill Eel Ladder
Eden Mill Eel Ladder
Eden Mill Eel Ladder

An eel ladder constructed along the Eden Mill Damn to help American eels make their way up and over the water. 

An eel ladder constructed along the Eden Mill Damn to help American eels make their way up and over the water. 

Three people talk and look at plants in a greenhouse that has tables with native plant seedlings on them in Joshua Tree National Park
Greenhouse tour at Joshua Tree National Park
Greenhouse tour at Joshua Tree National Park
Greenhouse tour at Joshua Tree National Park

National Park Service and U.S. Geological Survey employees tour the greenhouse in Joshua Tree National Park greenhouse. The plants growing in the Joshua Tree National Park greenhouse will be used for revegetation and restoration efforts in the park.

National Park Service and U.S. Geological Survey employees tour the greenhouse in Joshua Tree National Park greenhouse. The plants growing in the Joshua Tree National Park greenhouse will be used for revegetation and restoration efforts in the park.

Four people pose and smile outside of a Bureau of Land Management office in Phoenix, Arizona
U.S. Geological Survey employees celebrate data collection for the Land Treatment Digital Library
U.S. Geological Survey employees celebrate data collection for the Land Treatment Digital Library
U.S. Geological Survey employees celebrate data collection for the Land Treatment Digital Library

U.S. Geological Survey employees (from left to right) Matthew Clark, Laura Shriver, Morgan Cheyney, and Sarah Birchard after collecting data for the Land Treatment Digital Library at the Bureau of Land Management Phoenix District Office. 

A person sitting in a chair with a clipboard smiles, there are orange globemallow flowers in the foreground and a cloudy blue sky in the background
Collecting RestoreNet restoration field trial data in northern Arizona
Collecting RestoreNet restoration field trial data in northern Arizona
Collecting RestoreNet restoration field trial data in northern Arizona

USGS employee Laura Shriver collects RestoreNet data in northern Arizona in a field of native globemallows (Sphaeralcea parvifolia). Photo by Sarah Birchard (USGS).

Four people smile in front of a Bureau of Land Management office in Phoenix, Arizona
Celebrating data collection for the Land Treatment Digital Library
Celebrating data collection for the Land Treatment Digital Library
Celebrating data collection for the Land Treatment Digital Library

USGS employees Matthew Clark, Laura Shriver, Morgan Cheyney, and Sarah Birchard celebrate data collection for the Land Treatment Digital Library at the Phoenix Bureau of Land Management District Office, Arizona.

A close up photo of purple owl’s clover (Castilleja exserta) flowers blooming, there are multiple flowers with many bright purple petals blooming, with some in focus in the foreground and others in soft focus in the background
Purple owl’s clover (Castilleja exserta) blooming in the Sonoran Desert
Purple owl’s clover (Castilleja exserta) blooming in the Sonoran Desert
Purple owl’s clover (Castilleja exserta) blooming in the Sonoran Desert

Purple owl’s clover (Castilleja exserta) blooming in the Sonoran Desert near Roosevelt Lake in the Tonto National Forest in March 2026. Photo by Sarah Birchard (USGS).

Dam in lower Yakima River
Dam in the lower Yakima River
Dam in the lower Yakima River
Dam in the lower Yakima River

This is a photo of a dam in the lower Yakima River. Efforts to ameliorate the negative effects of diversion dams on aquatic species of concern are important in rivers where water withdrawal supports agricultural economies, and they are likely to become increasingly important with impending climate change. 

This is a photo of a dam in the lower Yakima River. Efforts to ameliorate the negative effects of diversion dams on aquatic species of concern are important in rivers where water withdrawal supports agricultural economies, and they are likely to become increasingly important with impending climate change. 

graph of survival probabilities of fish through canals versus dams
Survival Probabilities of Fish Through Canals Versus Dams
Survival Probabilities of Fish Through Canals Versus Dams
Survival Probabilities of Fish Through Canals Versus Dams

Survival probability estimates and 95% confidence intervals for yearling Chinook Salmon, juvenile steelhead, and subyearling Chinook Salmon at three diversion dams on the Yakima River, Washington.

nine panel plot of passage entrainment vs canal flow
Nine Panel Plot of Fish Passage Entrainment vs Canal Flow
Nine Panel Plot of Fish Passage Entrainment vs Canal Flow
Nine Panel Plot of Fish Passage Entrainment vs Canal Flow

Estimated relationship between entrainment probability and proportion of river flow entering canals at Wapato Dam, Sunnyside Dam, and Prosser Dam on the Yakima River, Washington. The relationships are shown at the mean total river flow for (A) yearling Chinook Salmon, (B) juvenile steelhead, and (C) subyearling Chinook Salmon.

Estimated relationship between entrainment probability and proportion of river flow entering canals at Wapato Dam, Sunnyside Dam, and Prosser Dam on the Yakima River, Washington. The relationships are shown at the mean total river flow for (A) yearling Chinook Salmon, (B) juvenile steelhead, and (C) subyearling Chinook Salmon.

Students watch a USGS ecologist describe restoration experiments in a field in Northern Arizona rangelands
A USGS Ecologist gives a tour of a Northern Arizona RestoreNet site
A USGS Ecologist gives a tour of a Northern Arizona RestoreNet site
A USGS Ecologist gives a tour of a Northern Arizona RestoreNet site

Laura Shriver, RAMPS coordinator, gives a tour of a Northern Arizona RestoreNet site to Northern Arizona University students. Photo by Jessica Archibald (Diablo Trust).

Five ranchers and researchers stand outdoors in a field looking at a large map, discussing land management
Researchers and ranchers discuss land management in Northern Arizona
Researchers and ranchers discuss land management in Northern Arizona
Researchers and ranchers discuss land management in Northern Arizona

Researchers from the U.S. Geological Survey and University of Arizona collaborate with Diablo Trust ranchers on range improvement and restoration efforts on Northern Arizona rangelands. Photo by Jessica Archibald (Diablo Trust).

Researchers from the U.S. Geological Survey and University of Arizona collaborate with Diablo Trust ranchers on range improvement and restoration efforts on Northern Arizona rangelands. Photo by Jessica Archibald (Diablo Trust).

A field of native plants under a cloud filled sky in Northern Arizona grasslands/rangelands
Monsoon season at a Northern Arizona RestoreNet site
Monsoon season at a Northern Arizona RestoreNet site
Monsoon season at a Northern Arizona RestoreNet site

A RestoreNet site in Northern Arizona with late summer monsoon rain clouds in the background. Photo by Laura Shriver.

infographic displaying economic statistics of various characteristics and challenges in ecosystems science.
Discover Ecosystems
Discover Ecosystems
Discover Ecosystems

America’s diverse ecosystems are an asset to current and future generations by supporting economically and recreationally important fish, wildlife, and lands. Healthy ecosystems support people and nature, fostering prosperity and enjoyment for all. 

America’s diverse ecosystems are an asset to current and future generations by supporting economically and recreationally important fish, wildlife, and lands. Healthy ecosystems support people and nature, fostering prosperity and enjoyment for all. 

infographic displaying economic statistics of various characteristics and challenges in ecosystems science.
Discover Ecosystems
Discover Ecosystems
Discover Ecosystems

America’s diverse ecosystems are an asset to current and future generations by supporting economically and recreationally important fish, wildlife, and lands. Healthy ecosystems support people and nature, fostering prosperity and enjoyment for all. 

America’s diverse ecosystems are an asset to current and future generations by supporting economically and recreationally important fish, wildlife, and lands. Healthy ecosystems support people and nature, fostering prosperity and enjoyment for all. 

Map of the Southwest showing level 3 ecoregions and black dots representing the locations of 23 RestoreNet sites in California, Arizona, New Mexico, Utah, and Colorado
RestoreNet Map
RestoreNet Map
RestoreNet Map

RestoreNet is a networked ecological restoration experiment spanning drylands of the American Southwest. It is engaging diverse partners to develop methods for successful revegetation projects that mitigate the effects of drought, invasion by non-native species, and land use practices.

RestoreNet is a networked ecological restoration experiment spanning drylands of the American Southwest. It is engaging diverse partners to develop methods for successful revegetation projects that mitigate the effects of drought, invasion by non-native species, and land use practices.

A bulldozed fire break in vegetation in steep, hilly terrain
Dozer Line through Repaired Habitat Supervised by SPARCS Fireline Resource Advisors during the Palisades Fire
Dozer Line through Repaired Habitat Supervised by SPARCS Fireline Resource Advisors during the Palisades Fire
Dozer Line through Repaired Habitat Supervised by SPARCS Fireline Resource Advisors during the Palisades Fire

Bulldozer lines create breaks in vegetation and are commonly used when fighting wildfires.  This dozer line was created during the Palisades Fire in Los Angeles County, California in January 2025.

A Sonoran Desert landscape with a blue sky, saguaro cactus in the background, and shrubs, cacti, and grasses in the foreground
A Sonoran Desert RestoreNet site
A Sonoran Desert RestoreNet site
A Sonoran Desert RestoreNet site

A RestoreNet Field Trial Network restoration experiment site in the Sonoran Desert, Arizona, in spring 2024. Photo by Laura Shriver (USGS).

A RestoreNet Field Trial Network restoration experiment site in the Sonoran Desert, Arizona, in spring 2024. Photo by Laura Shriver (USGS).

Scenic view of red rock mesas surrounding Canyonlands Research Center in Southern Utah
Canyonlands Research Center
Canyonlands Research Center
Canyonlands Research Center

Scenic view of the red rock mesas surrounding Canyonlands Research Center (The Nature Conservancy) in southern Utah.

Scenic view of the red rock mesas surrounding Canyonlands Research Center (The Nature Conservancy) in southern Utah.

Was this page helpful?