Unified Interior Regions
Salton Sea
The Salton Sea is facing many challenges as inflows and water levels decline. USGS science helps identify problems and evaluate possible solutions.
Read moreRegion 8: Lower Colorado Basin
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The Lower Colorad Basin includes Arizona, southern Nevada, and souther California. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions. Our scientists do a broad array of research and technical assistance throughout the U.S. and across the globe.
News
Media Advisory: A Jaguar’s Field of Dreams – Live Online Public Lecture
The U.S. Geological Survey public lecture series is back and virtual. News reporters are invited to attend to learn how USGS scientists are helping protect one of the only jaguars that lives in the U.S.
Parts of US’s Southernmost States will “Tropicalize” as Climate Changes
Cold-sensitive plants, animals moving north due to fewer, weaker winter freezes
New Report Highlights Declining Sagebrush Ecosystem, Provides Foundation for Next Generation of Conservation and Management
Fort Collins, CO – Considered one of the most imperiled ecosystems in the world and home to mule deer, pronghorn, sage-grouse, pygmy rabbits and more than 350 other species of conservation concern, the sagebrush ecosystem continues to shrink rapidly due to a host of growing threats, according to a new scientific report.
The Nonindigenous Aquatic Species Alert Risk Mapper (ARM)
The Nonindigenous Aquatic Species (NAS) program has developed a new tool, the NAS Alert Risk Mapper (ARM), to characterize waterbodies in the conterminous U.S. and Hawaii at potential risk of invasion from a new nonindigenous species sighting.
Defining Native Ranges of U.S. Inland Fishes
Understanding the native versus non-native range of a species can provide useful information about dispersal, population distribution patterns, and human mediated movement across hydrologic barriers. The USGS Nonindigenous Aquatic Species (NAS) Program is working with partners to define native ranges of inland fishes in the United States to help identify which species should be included in the...
The Nonindigenous Aquatic Species Flood and Storm Tracker (FaST)
Storm-related flooding can lead to the potential spread of nonindigenous (or non-native) aquatic species into waterways they have not been seen in before. The USGS Nonindigenous Aquatic Species program has developed an innovative mapping tool to help natural resource managers with post-storm nonindigenous aquatic species detection and assessment efforts.
Nonindigenous Aquatic Species (NAS) Program
Welcome to the Nonindigenous Aquatic Species (NAS) information resource for the United States Geological Survey. Located at Gainesville, Florida, this site has been established as a central repository for spatially referenced biogeographic accounts of introduced aquatic species. The program provides scientific reports, online/realtime queries, spatial data sets, distribution maps, and general...
U.S. regions in the tropical-to-temperate transition
A map showing North America's tropical-to-temperate transition zone. Red, orange, and yellow depict the more tropical zones, and blues depict the more temperate zones, based on to the coldest recorded temperature for each area between 1980 and 2009. Photos show some cold-sensitive plants and animals with northern range limits governed by winter cold temperature extremes.
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Subtropical snook gather at a warm Florida springhead in winter
Winter temperature extremes control the distributions of subtropical fishes. Common snook (Centropomus undecimalis), aggregate at a spring in northern Florida during winter. Snook are warm saltwater game fish, common in Florida, that have been moving further northward as extreme cold spells become less frequent and less intense.
Fires transforming Sonoran Desert
Restoring areas infested with invasive species that carry catastrophic fire is a top priority for the Restoration Assessment and Monitoring Program for the Southest (RAMPS) and our partners. In 2019 & 2020, fires carried by the invasive red brome (Bromus rubens) grass destroyed hundreds of thousands of acres of Sonoran Desert Scrub, resulting in some of the
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How does restoration affect soils?
How do restoration plantings alter ecosystem function? NAU PhD student Kathleen Balazs and technician Sarah Negovan measure soil water infiltration rates at a RestoreNet site near La Sal, Utah. These measurements will illustrate how restoration plantings effect certain ecosystem functions
Dragonfly Mercury Project specimen collection in Glacier NP
Researchers instruct volunteers on how to collect dragonfly larvae in Glacier NP as a part of the Dragonfly Mercury Project.
Managing Fire on the US Mexico Borderlands
RAMPS met with DOI Office of Wildland Fire, US Customs and Border Patrol, and US Fish & Wildlife Service staff at Buenos Aires National Wildlife Refuge in southern AZ last November. The group is developing tools to reduce wildfire risk, conserve wildlife habitat and natural resources, and increase safety and security of border operations.
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Juniper Skeletons
Thinning rangelands by removing trees such as juniper is a common mangement action done across the intermountain west. The goals of this type of vegetation treatment typically are to increase forage and habitat for grazing animals, improve soil conditions, and/or reduce risks of catastrophic fire. In this photo, skeletons leftover from a chaining treatment dot a range in
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A single species stand of nonnative tamarisk
Single species stand of nonnative tamarisk on the Lower Colorado River at Cibola National Wildlife Refuge, California
The U.S. Geological Survey public lecture series is back and virtual. News reporters are invited to attend to learn how USGS scientists are helping protect one of the only jaguars that lives in the U.S.
Cold-sensitive plants, animals moving north due to fewer, weaker winter freezes
Fort Collins, CO – Considered one of the most imperiled ecosystems in the world and home to mule deer, pronghorn, sage-grouse, pygmy rabbits and more than 350 other species of conservation concern, the sagebrush ecosystem continues to shrink rapidly due to a host of growing threats, according to a new scientific report.
Streamflow in the Southwestern U.S. is projected to decrease by as much as 36–80% by the end of this century, reports a new study by the U.S. Geological Survey. Decreases of this magnitude would challenge our ability to meet future water demand in this region and could jeopardize compliance with interstate and international water-sharing agreements.
Restoration Assessment and Monitoring Program for the Southwest (RAMPS)
A Program of the Southwest Biological Science Center & Ecosystems Mission Area
To subscribe to our newsletter, please visit: https://listserv.usgs.gov/mailman/listinfo/ramps
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A total of $133,016 will fund new research and preserve important data across the Grand Canyon State.
The scarcity or overabundance of water presents some of the most dangerous, damaging and costly threats to human life, ecosystems and property in the form of drought, floods and debris flows.
This season's edition of the Restoration Assessment and Monitoring Program for the Southwest Newsletter contains recent program highlights including research updates, new projects, field updates and more.
To subscribe to our newsletter, please visit: https://listserv.usgs.gov/mailman/listinfo/ramps
Read more about how the network or RAMPS is enhancing restoration in drylands.
RestoreNet is a networked ecological experiment testing restoration treatments across the arid Southwest. Seven experimental sites were installed in the Summer of 2018 on the rangelands of Northern Arizona. The experiments tested seed mixes with various treatments to increase revegetation success (see photos above). These are the results after the first year.
Read more about RestoreNet here.
This season's edition of the Restoration Assessment and Monitoring Program for the Southwest Newsletter contains recent program highlights including research updates from our RestoreNet experiment, recently awarded funding, field updates and more.
To subscribe to our newsletter, please visit: https://listserv.usgs.gov/mailman/listinfo/ramps
Get the latest updates from RAMPS here.
U.S. Geological Survey field crews are measuring flooding across the country as spring weather is in full swing. Warming temperatures, increased precipitation and snowmelt have caused moderate to major flooding in the upper Midwest, East Coast, Central Plains and the Southeast portions of the country.
Budget Focuses on Bringing Science, Facilities, and Infrastructure into the 21st Century
Contacts
Locations
Region 8: Lower Colorado Basin
Phone: 916-278-9551