Unified Interior Regions


The Pacific Region has nine USGS Science Centers in California, Nevada, and Hawaii. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions.

States L2 Landing Page Tabs

Filter Total Items: 30
Date published: July 20, 2018
Status: Active

Guam (GUA)

The Guam observatory was established in 1957. The observatory is situated on property owned by the U.S. Air Force according to terms of an agreement with the USGS and the Geomagnetism Program. The facility is shared with the USGS Fort Collins Science Center (FORT) ...

Date published: May 1, 2018
Status: Active

Bird Banding Laboratory

The Bird Banding Laboratory (BBL) is an integrated scientific program established in 1920 supporting the collection, archiving, management and dissemination of information from banded and marked birds in North America.  This information is used to monitor the status and trends of resident and migratory bird populations. Because birds are good indicators of the health of the environment, the...

Date published: January 25, 2018
Status: Active

Stillaguamish Emerging Contaminants

Emerging contaminants are a group of chemical compounds that generally include pharmaceuticals, personal-care products, surfactants, industrial and household chemicals, and food additives. Their presence in the environment is typically associated with discharges from wastewater treatment-plants (WWTP), on-site septic systems, and some animal production operations. They are of particular...

Contacts: Patrick Moran
Date published: December 4, 2016
Status: Active

Biology, Impacts and Control of Invasive Reptiles in the Everglades

Invasive species are considered to be second only to habitat degradation in terms of negative impacts on the Earth’s ecosystems, and our scientists make up a significant proportion of the global expertise in the rapidly-growing problem of invasive reptiles.

Date published: December 1, 2016
Status: Active

USGS Brown Treesnake Laboratory and Rapid Response Facility - Guam

USGS scientists and staff associated with the Brown Treesnake Project are co-located at the Guam National Wildlife Refuge at the northern end of Guam in the western Pacific Ocean. Project staff work on developing and testing control tools for invasive brown treesnakes, as well as understanding their impacts on Guam's ecosystems. Project staff also lead the multi-agency Brown Treesnake Rapid...

Date published: August 1, 2016
Status: Active

Ecology of Insect-eating Bats

Bats are the only flying mammals that are active mostly at night and occur on all continents except Antarctica. Bats are ecologically diverse, with a range of species that specialize in feeding on fruit, nectar, blood, fish, small mammals, and insects. However, of the more than 1,100 known species of bats on Earth, the majority specialize in feeding on insects. In the United States for example...

Date published: July 26, 2016
Status: Active

HDgov: Multi-agency Website for Human Dimensions of Natural Resources

HDgov is an interactive and mobile-responsive online portal to interagency, academic, and non-government resources focused on the human dimensions of natural resource management. The web portal provides easy access to tools, publications, data, and methods that help ensure that the people side of natural resources is considered throughout the entire natural resource management process. The...

Date published: July 26, 2016
Status: Active

National Park Service Visitor Spending Effects

The National Park Service (NPS) manages the Nation’s most iconic destinations that attract millions of visitors from across the Nation and around the world. Trip-related spending by NPS visitors generates and supports a considerable amount of economic activity within park gateway communities. USGS economists collaborate with the National Park Service social science program to estimate NPS...

Date published: July 21, 2016
Status: Active

North American Waterfowl Management Plan

The ultimate success of North American Waterfowl Management Plan (NAWMP) depends on maintaining relevance to stakeholders and society. In order to be relevant, a first step is to better understand what people value in regard to waterfowl and their habitats. 

Date published: July 6, 2016
Status: Active

Brown Treesnake Rapid Response Team

Brown Treesnakes continue to cause major problems for the ecology, economy, and quality of life on Guam. Our scientists conduct research on this snake species, including control tool development and testing, ecological impacts, and early detection methods. We hold Brown Treesnake Rapid Response Team training courses on Guam throughout the year to develop the skills needed to effectively...

Date published: April 13, 2016

Understanding Coastal Change

Scientists perform a range of studies that document, assess, and model coastal change, risk, and vulnerability. Studies include historical shoreline change, the geologic structure and history of coastal regions, sediment supply and transport, sea-level rise, and how extreme storm events affect rates and impacts of coastal change.

Date published: April 13, 2016

Geologic Hazards and Catastrophic Events

We study the distribution and hazard potential of coastal and submarine events such as earthquakes and submarine landslides and associated tsunami potential, hurricane induced coastal inundation, extreme storms, sea-level rise and oil and gas spills. We also model development to help evaluate and forecast coastal hazard probability and occurrence.

Filter Total Items: 21
Date published: January 1, 2017

Stream Segments for the southern Guam watershed model, PRMS_2016

The stream segments available here were used in the Precipitation Runoff Modeling System (PRMS) of southern Guam documented by Rosa and Hay (2017). A Geographic Information System (GIS) file for the stream segments is provided as a shapefile with attributes ParentSeg, Region, and RegionSeg identifying the numbering convention used in the PRMS_2016 southern Guam model parameter fil

Date published: January 1, 2017

Surficial sediment data on the North Fork Stillaguamish River and State Route 530 landslide near Oso, Washington

These tables document grain-size distributions of sediment collected as part of a study on the geomorphic impacts of the March 2014 State Route 530 Landslide near Oso, Washington. This includes samples of material from the landslide deposit itself, covering a range of distinct facies present in the landslide, and samples of sand and gravel at various locations along the North Fork Stillagua...

Date published: April 20, 2016

Structures Data

USGS data portray selected structures data, including the location and characteristics of manmade facilities. Characteristics consist of a structure's physical form (footprint), function, name, location, and detailed information about the structure. The types of structures collected are largely determined by the needs of the disaster planning and response and homeland security organizations....

Date published: April 19, 2016

The United States Interagency Elevation Inventory (USIEI)

The USIEI is a comprehensive, nationwide listing of known high-accuracy topographic and bathymetric data for the United States and its territories. The project is a collaborative effort of the USGS and NOAA with contributions from other federal agencies. The inventory supports the 3D Elevation Program and the Integrated Ocean and Coastal Mapping effort. This resource is updated in Spring and...

Date published: April 19, 2016

Elevation Data

The 3DEP products and services available through The National Map consist of lidar point clouds (LPC), standard digital elevation models (DEMs) at various horizontal resolutions, elevation source and associated datasets, an elevation point query service and bulk point query service. All 3DEP products are available, free of charge and without use restrictions.

Date published: April 12, 2016

Orthoimagery Data

Orthoimagery data typically are high resolution aerial images that combine the visual attributes of an aerial photograph with the spatial accuracy and reliability of a planimetric map. The National Map offers public domain, 1-meter orthoimagery for the conterminous United States with many urban areas and other locations at 2-foot or finer resolution.

Date published: April 12, 2016

The National Map Small-Scale Collection

The National Map offers a collection of small-scale datasets, most of which are at 1:1,000,000. The National Map publishes two data collections at one million-scale: one for Global Map users and one for National Map users. In terms of vector geometry, the lines, points, and areas in these data collections are identical. The difference is in the attributes assigned to these features.

Filter Total Items: 15
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Year Published: 2005

Rainfall-Runoff and Water-Balance Models for Management of the Fena Valley Reservoir, Guam

The U.S. Geological Survey's Precipitation-Runoff Modeling System (PRMS) and a generalized water-balance model were calibrated and verified for use in estimating future availability of water in the Fena Valley Reservoir in response to various combinations of water withdrawal rates and rainfall conditions. Application of PRMS provides a physically...

Yeung, Chiu W.
Rainfall-Runoff and Water-Balance Models for Management of the Fena Valley Reservoir, Guam; 2005; SIR; 2004-5287; Yeung, Chiu W.

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Year Published: 2003

Flooding Associated with Typhoon Chata'an, July 5, 2002, Guam

Introduction On July 5, 2002, starting at about 8 a.m., the southern half of the eye of Typhoon Chata'an passed directly over the northern part of the island of Guam. Data collected on Guam indicate that the typhoon had sustained winds of 85 to 90 miles per hour (mi/hr) with gusts of up to 115 mi/hr (Charles Guard, National Weather Service,...

Fontaine, Richard A.
Flooding Associated with Typhoon Chata'an, July 5, 2002, Guam; 2003; FS; 061-03; Fontaine, Richard A.

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Year Published: 2003

Hydrologic Resources of Guam

Introduction The U.S. Territory of Guam, which lies in the western Pacific Ocean near latitude 13?28'N and longitude 144?45'E, is the largest (211 mi2) and southernmost of the islands in the Mariana chain. Ground water supplies about 80 percent of the drinking water for the island's 150,000 residents and nearly one million visitors per year. In...

Gingerich, Stephen B.
Hydrologic Resources of Guam; 2003; WRI; 2003-4126; Gingerich, Stephen B.

Filter Total Items: 14
August 3, 2021

Aggregates Data by State, Type, and End Use; 1971–2018

This data set contains supplemental aggregates data for the USGS Minerals Yearbook Volume II—Area Reports: Domestic. It contains data for the years 1971 through 2018 and replaces the discrete construction aggregate tables that were included in the individual State chapters prior to 2014. It contains

Filter Total Items: 27
January 23, 2015

The U.S. Geological Survey Earthquake Program will be hosting an annual workshop to facilitate communication and research collaboration among scientists from the USGS and other institutions studying earthquakes in northern California. 

December 18, 2014

Secretary of the Interior Sally Jewell announced today that Interior’s Pacific Islands Climate Science Center is awarding over $600,000 to universities and other partners for research to guide managers of parks, refuges and other cultural and natural resources in planning how to help communities, species and ecosystems adapt to climate change.

December 20, 2013

David Helweg has been selected as the first permanent director of the U.S. Department of the Interior'sPacific Islands Climate Science Center, headquartered at the University of Hawai'i, Manoa.

December 19, 2013

Secretary of the Interior Sally Jewell announced today that Interior’s Pacific Islands Climate Science Center is awarding more than $700,000 to universities and other partners for research to guide managers of parks, refuges and other cultural and natural resources in planning how to help species and ecosystems adapt to climate change.

USGS science for a changing world logo
October 13, 2009

Five giant non-native snake species would pose high risks to the health of ecosystems in the United States should they become established here, according to a U.S. Geological Survey (USGS) report released today.
The USGS report details the risks of nine non-native boa, anaconda and python species that are invasive or potentially invasive in the United States.

USGS science for a changing world logo
August 13, 2009

Residents and critical infrastructure in the nation's six highest-risk volcanic areas—including the Northern Mariana Islands -- will benefit from increased monitoring and analysis as a result of Recovery Act funds being channeled into volcano monitoring, Secretary Salazar announced today.

USGS science for a changing world logo
January 13, 2009

Real-time stream flow and rainfall data for selected sites on Guam is now available online from the U.S. Geological Survey (USGS) Pacific Islands Water Science Center Web site. This information is useful for emergency responders and local government to forecast potential flooding events and minimize the risk to human safety and property.

USGS science for a changing world logo
December 19, 2002

Despite considerable damage to facilities and stream gages resulting from supertyphoon Pongsona, the U.S. Geological Survey’s hydrological team in the Pacific Islands is hard at work assisting in flood assessment and drinking water recovery on the islands of Guam and Rota.

March 22, 1999

The newly released book "Problem Snake Management: The Habu and the Brown Treesnake" promises to be instrumental in helping Saipan and other Pacific Islands confront the threat of brown tree snakes, a prolific pest species that has caused health and economic hazards for Guam’s residents, as well as devastating native bird, lizard, and bat populations.