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Filter Total Items: 68
A rat peeks through the tall grass in Hawaii Volcanoes National Park
Date Published: June 26, 2018
Status: Active

Monitoring Bird and Rat Behavior to Improve Invasive Species Management

Introduced rats are notorious predators of birds and their nests worldwide, but especially on remote islands. Rats (Rattus exulans) first arrived in Hawai‘i with Polynesian colonists about 1,000 years ago, resulting in deleterious consequences for native birds and ecosystems. Since Western contact in 1778, two additional rat species have become established in Hawai‘i, including the highly...

screenshot of part of Oahu map with yellow and orange colors where landslides could occur
Date Published: June 15, 2018
Status: Active

Preliminary Landslide Susceptibility Maps and Data for Hawaii

Landslide Susceptibility Data and Maps provide tools for hazard assessment prior to an event that may cause landslides.

Close-up photograph of stem, leaves and flower buds of haha plant
Date Published: June 6, 2018
Status: Active

Using Plant Physiologic Responses to Environmental Conditions to Improve Species and Habitat Management in Hawaii

Recent studies show that past and ongoing environmental changes have been substantial and have likely already affected conservation efforts in Hawai‘i. Much of the state has experienced substantial drying, including decreases in mean annual precipitation since the 1920s, longer rainless periods, and decreasing stream flow. Temperatures have been increasing in Hawai‘i for the last 40 years,...

Photo of Bird Bands in a Variety of Sizes and Types
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...

coastal vulnerability of sea-level rise map
Date Published: January 18, 2018
Status: Active

National Assessment of Coastal Vulnerability to Sea Level Rise

The original national coastal vulnerability index (CVI) assessment was motivated by expected accelerated sea-level rise (SLR) and the uncertainty in the response of the coastline to SLR. This research was conducted between 1999 and 2001, and is currently being updated using new data sources and methodology. This original study was part of the ...

Oblique aerial photograph looking to the southwest along the southern end of Cedar Island, Virginia
Date Published: January 18, 2018
Status: Active

Long-Term Coastal Change

Goals of this task include developing and improving coastal-change assessments and supporting long-term planning and decision making to ensure sustainable coastal economies, infrastructure, and ecosystems.

Kawela ridge, Moloka'i, Hawaii
Date Published: January 11, 2018
Status: Completed

Studies on the Rapidly Eroding Reef

This study focuses on assessing changes in vegetation cover and composition inside and outside a fenced exclosure within the USGS Ridge-to-Reef study area on the island of Moloka‘i. This information will be delivered to federal, state, and private land managers who are trying to determine best management practices to reduce erosion and sediment runoff from this dry habitat which has been...

Rufus fantail nestlings
Date Published: December 29, 2017
Status: Active

Pacific Island Bird Survey Design and Data Analysis

Abundance data are collected for bird populations throughout the Pacific Islands by numerous federal, state, university, and non-profit organizations. In order to ensure data are standardized and available to researchers throughout the region, interagency bird databases have been created and continue to be used. These databases contain more than a million compiled, proofed, and standardized...

Koa flowers
Date Published: December 27, 2017
Status: Completed

Adaptation in Montane Plants

Montane plant communities in widely separated intact natural environments of the world have responded to changes in precipitation and temperature regimes by shifting both margins and core distributional ranges upward in elevation.  Reduced evapotranspiration rates in cooler climate zones at higher elevation may compensate for less precipitation and higher temperatures within species’ former...

Trained scent-detection dog and dog trainer at work in a taro field at Hanalei National Wildlife Refuge
Date Published: November 21, 2017
Status: Active

Efficacy of Avian Botulism Surveillance and Mitigation Using Detection Canines

Avian botulism causes waterbird mortality in Hawai‘i's wetlands and elsewhere. We will evaluate using trained scent-detection canines (sniffer dogs) as a new tool to survey for the presence of avian botulism. Biologists will compare variables influencing detection probability and detection rates with traditional search methods. The pilot study will test the feasibility of this approach as a...

Cliffs meet the ocean in the North Kohala District of Hawaii
Date Published: September 18, 2017
Status: Active

Webinar: Rainfall Variability and Drought in the Hawaiian Islands

View this webinar to learn about the state of the science on drought in Hawai'i.

Contacts: Abby Frazier
Filter Total Items: 62
USGS
January 1, 2019

In-situ near-shore seawater measurements of dissolved radon, conductivity, and water level were used to determine the advection rate of groundwater onto the fringing reef off Makua, HI, USA.

USGS
January 1, 2019

Observations of bleached coral were documented by scuba divers along pre-determined transects and are presented here in comma-separated format. Included in the table are coral species observed, colony size, size of bleached area on colony, and seawater temperature.

USGS
January 1, 2019

Seafloor photographs were collected by SCUBA divers along pre-determined transects using an underwater digital camera following benthic survey protocols developed by the National Park Service (NPS) at Kaloko-Honokohau National Historical Park (Marrack and others, 2014; Weijerman and others, 2014) and modeled after the U.S. Geological Survey (USGS) and NPS coral reef survey proto

Map of the Pacific Ocean and surrounding continents with boxes drawn around areas to show study locations.
January 1, 2019

This data release provides flooding extent polygons (flood masks) and depth values (flood points) based on wave-driven total water levels for 22 locations within the States of Hawaii and Florida, the Territories of Guam, American Samoa, Puerto Rico, and the U.S. Virgin Islands, and the Commonwealth of the Northern Mariana Islands. For each of the 22 locations there are eight ass

A map shows islands plotted on a latitude and longitude scale with colors that show varying ocean depth.
January 1, 2019

Projected wave climate trends from WAVEWATCH3 model output were used as input for nearshore wave models (for example, SWAN) for the main Hawaiian Islands to derive data and statistical measures (mean and top 5 percent values) of wave height, wave period, and wave direction for the recent past (1996-2005) and future projections (2026-2045 and 2085-2100).
Three-hourly global

USGS
January 1, 2019

Conductivity-Temperature-Depth (CTD) profile data were collected along transects across study areas of west and east Hawaii Island between 2010 and 2014. Measurements were made over a range of tide and weather conditions and help characterize the spatial extent and variability in estuarine conditions across the reef when grouped by 1 to 2-hour survey period or by season. Sites of cold and war

USGS
January 1, 2019

Time-series data of water temperature were collected at 33 locations along the west coast of the Island of Hawaii, including within Kaloko-Honokohau National Historical Park (KAHO), and Puu o Honaunau National Historical Park (PUHO) between 2010 and 2013 in nearshore coral reef and anchialine pool settings. Temperature sensors were attached to fossil limestone, rock or dead coral wi

USGS
January 1, 2019

Strontium isotope ratios of historical Kīlauea summit and rift lavas were analyzed by thermal ionization mass spectrometry (TIMS) at the Southwest Isotope Research Laboratories of the U.S. Geological Survey (USGS) in Denver. There were 151 analyses of 49 samples obtained from the field, the collections of the USGS Hawaiian Volcano Observatory (HVO), and the Smithsonian Institution. Data for

Laysan albatross adults and chicks
June 18, 2018

This collection of nine datasets covers Midway Atoll and Laysan Island in the Northwestern Hawaiian Islands, and was created to help estimate the impacts of the March 11, 2011 tsunami event on avifauna in the Northwestern Hawaiian Islands. 

Aerial photograph of Laysan Island, Hawaii
June 18, 2018

This data release consists of two ESRI geodatabases that store inundation areas for various future scenarios of sea-level rise, groundwater rise, and storm waves for Laysan Island and Midway Atoll in the Northwestern Hawaiian Islands.

Akepa
March 23, 2018

We quantified the availability of breeding habitat of the endangered Hawaiian Akepa (Loxops coccineus). The species is thought to nest excusively in natural cavities within mature ohia (Metrosideros polymorpha) trees but birds commonly occur in short stature trees that presumably do not have any natural cavities because of their polyploidal (many-branched) structure.

Filter Total Items: 297
Map showing lower East Rift Zone lava flows and fissure
July 24, 2018

Map as of 10:00 a.m. HST, July 24, 2018

Thermal map of fissure system and lava flows
July 24, 2018

This thermal map shows the fissure system and lava flows as of 6 am on Tuesday, July 24.

Map showing lower East Rift Zone lava flows and fissure
July 23, 2018

Map as of 1:00 p.m. HST, July 23, 2018.

Map showing lower East Rift Zone lava flows and fissure
July 22, 2018

As of 2:00 p.m. HST, July 22, 2018, the lava flow margins had not expanded since the previous map, so no red areas (indicating expansion) appear on this map.

Thermal map of fissure system and lava flows
July 21, 2018

This thermal map shows the fissure system and lava flows as of 6 am on Saturday, July 21

Map showing lower East Rift Zone lava flows and fissure
July 19, 2018

Map as of 12:00 p.m. HST, July 19, 2018

Thermal map of fissure system and lava flows
July 19, 2018

This thermal map shows the fissure system and lava flows as of 6 am on Thursday, July 19

Map showing lower East Rift Zone lava flows and fissure
July 18, 2018

Map as of 10:00 a.m. HST, July 18, 2018.

Thermal map of fissure system and lava flows
July 17, 2018

This thermal map shows the fissure system and lava flows as of 6 am on Tuesday, July 17.

Map of Kīlauea East Rift Zone lava flows and fissures
July 16, 2018

Map as of 1:00 p.m. HST, July 16, 2018

Thermal map of fissure system and lava flows
July 14, 2018

This thermal map shows the Fissure 8 flow as of 6 am on Saturday, July 14

Thermal map of fissure system and lava flows
July 12, 2018

This thermal map shows the fissure system and lava flows as of 6 am on Thursday, July 12

Filter Total Items: 110
Publication Thumbnail
Year Published: 2013

Freshwater and drought on Pacific Islands

Izuka, Scot K.; Keener, Victoria
Freshwater and drought on Pacific Islands; 2013; Book chapter; Book; Climate Change and Pacific Islands: Indicators and Impacts: Report for the 2012 Pacific Islands Regional Climate Assessment; Scot K Izuka; Keener, Victoria

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Year Published: 2013

Trends and shifts in streamflow in Hawaii, 1913-2008

This study addresses a need to document changes in streamflow and base flow (groundwater discharge to streams) in Hawai'i during the past century. Statistically significant long-term (1913-2008) downward trends were detected (using the nonparametric Mann-Kendall test) in low-streamflow and base-flow records. These long-term downward trends are...

Bassiouni, Maoya; Oki, Delwyn S.
Trends and shifts in streamflow in Hawaii, 1913-2008; 2013; Article; Journal; Hydrological Processes; Bassiouni, Maoya; Oki, Delwyn S.

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Year Published: 2012

Availability and distribution of low flow in Anahola Stream, Kauaʻi, Hawaiʻi

Anahola Stream is a perennial stream in northeast Kauaʻi, Hawaiʻi, that supports agricultural, domestic, and cultural uses within its drainage basin. Beginning in the late 19th century, Anahola streamflow was diverted by Makee Sugar Company at altitudes of 840 feet (upper intake) and 280 feet (lower intake) for irrigating sugarcane in the Keālia...

Cheng, Chui Ling; Wolff, Reuben H.
Availability and distribution of low flow in Anahola Stream, Kauaʻi, Hawaiʻi; 2012; SIR; 2012-5264; Cheng, Chui Ling; Wolff, Reuben H.

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Year Published: 2012

Low-flow characteristics of streams under natural and diversion conditions, Waipiʻo Valley, Island of Hawaiʻi, Hawaiʻi

Over the past 100 years, natural streamflow in Waipiʻo Valley has been reduced by the transfer of water out of the valley by Upper and Lower Hāmākua Ditches. The physical condition and diversion practices along the two ditch systems have varied widely over the years, and as a result, so have their effects on natural streamflow in Waipiʻo...

Fontaine, Richard A.
Low-flow characteristics of streams under natural and diversion conditions, Waipiʻo Valley, Island of Hawaiʻi, Hawaiʻi; 2012; SIR; 2011-5118; Fontaine, Richard A.

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Year Published: 2012

Development of invertebrate community indexes of stream quality for the islands of Maui and Oahu, Hawaii

In 2009-10 the U.S. Geological Survey (USGS) collected physical habitat information and benthic macroinvertebrates at 40 wadeable sites on 25 perennial streams on the Island of Maui, Hawaiʻi, to evaluate the relations between the macroinvertebrate assemblages and environmental characteristics and to develop a multimetric invertebrate community...

Wolff, Reuben H.

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Year Published: 2012

Measurements of seepage losses and gains, East Maui Irrigation diversion system, Maui, Hawaiʻi

The U.S. Geological Survey conducted a field study from March to October 2011 to identify ditch characteristics and quantify seepage losses and gains in the East Maui Irrigation (EMI) diversion system, east Maui, Hawaiʻi. The EMI diversion system begins at Makapipi Stream in the east and ends at Māliko Gulch in the west. It consists of...

Cheng, Chui Ling
Measurements of seepage losses and gains, East Maui Irrigation diversion system, Maui, Hawaiʻi; 2012; OFR; 2012-1115; Cheng, Chui Ling

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Year Published: 2012

Sources of suspended sediment in the Waikele watershed, Oʻahu, Hawaiʻi

Data from streamflow/sediment gages and measurements of changes in channel-bed sediment storage were gathered between October 1, 2007, and September 30, 2010, to assess the sources of suspended sediment in the Waikele watershed, Oʻahu, Hawaiʻi. Streamflow from the watershed averaged 33 cubic feet per second during the study period, with...

Izuka, Scot K.
Sources of suspended sediment in the Waikele watershed, Oʻahu, Hawaiʻi; 2012; SIR; 2012-5085; Izuka, Scot K.

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Year Published: 2012

Groundwater availability in the Lahaina District, west Maui, Hawai'i

Most of the public water supply in the Lahaina District, west Maui, Hawai'i, is pumped from a freshwater lens in volcanic rocks. Because of population growth, groundwater withdrawals from wells in this area are expected to increase from about 5.8 million gallons per day in 2007 to more than 11 million gallons per day by 2030. Currently (2011), the...

Gingerich, Stephen B.; Engott, John A.
Groundwater availability in the Lahaina District, west Maui, Hawai'i; 2012; SIR; 2012-5010; Gingerich, Stephen B.; Engott, John A.

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Year Published: 2012

Numerical simulation of flow in deep open boreholes in a coastal freshwater lens, Pearl Harbor Aquifer, O‘ahu, Hawai‘i

The Pearl Harbor aquifer in southern O‘ahu is one of the most important sources of freshwater in Hawai‘i. A thick freshwater lens overlays brackish and saltwater in this coastal aquifer. Salinity profiles collected from uncased deep monitor wells (DMWs) commonly are used to monitor freshwater-lens thickness. However, vertical flow in...

Rotzoll, Kolja
Numerical simulation of flow in deep open boreholes in a coastal freshwater lens, Pearl Harbor Aquifer, O‘ahu, Hawai‘i; 2012; SIR; 2012-5009; Rotzoll, Kolja

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Year Published: 2011

From ridge to reef—linking erosion and changing watersheds to impacts on the coral reef ecosystems of Hawai‘i and the Pacific Ocean

Coral reef ecosystems are threatened by unprecedented watershed changes in the United States and worldwide. These ecosystems sustain fishing and tourism industries essential to the economic survival of many communities. Sediment, nutrients, and pollutants from watersheds are increasingly transported to coastal waters, where these contaminants...

Stock, Jonathan D.; Cochran, Susan A.; Field, Michael E.; Jacobi, James D.; Tribble, Gordon
From ridge to reef—linking erosion and changing watersheds to impacts on the coral reef ecosystems of Hawai‘i and the Pacific Ocean; 2011; FS; 2011-3049; Stock, Jonathan D.; Cochran, Susan A.; Field, Michael E.; Jacobi, James D.; Tribble, Gordon

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Year Published: 2011

A water-budget model and assessment of groundwater recharge for the Island of Hawaiʻi

Concern surrounding increasing demand for groundwater on the Island of Hawaiʻi, caused by a growing population and an increasing reliance on groundwater as a source for municipal and private water systems, has prompted a study of groundwater recharge on the island using the most current data and accepted methods. For this study, a daily water...

Engott, John A.
A water-budget model and assessment of groundwater recharge for the Island of Hawaiʻi; 2011; SIR; 2011-5078; Engott, John A.

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Year Published: 2011

Potential effects of roadside dry wells on groundwater quality on the Island of Hawai'i-Assessment using numerical groundwater models

Widespread use of dry wells to dispose of roadside runoff has raised concern about the potential effects on the quality of groundwater on the Island of Hawai‘i. This study used semi-generic numerical models of groundwater flow and contaminant transport to assess the potential effect of dry wells on groundwater quality on the Island of Hawai...

Izuka, Scot K.
Potential effects of roadside dry wells on groundwater quality on the Island of Hawai'i-Assessment using numerical groundwater models; 2011; SIR; 2011-5072; Izuka, Scot K.

Filter Total Items: 1,613
Earthquake Hypocenters Map - Past 5 Years - Kīlauea
December 31, 2019

Earthquake Hypocenters Map - Past 5 Years - Kīlauea

Map showing locations of earthquakes during the past 5 years.

Summit Vertical Motion - Past Year Mauna Loa
December 31, 2019

Summit Vertical Motion - Past Year

Summit Vertical Motion - Past Year

Earthquake Depths - Past 5 Years Mauna Loa
December 31, 2019

Earthquake Depths - Past 5 Years Mauna Loa

Earthquake Depths - Past 5 Years Mauna Loa. Depth of earthquakes during the past week in the area shown on the map above. On both figures, circle-size represents magnitude, and color indicates depth.

Electronic Tilt at Kīlauea Summit and East Rift Zone - Past Week
December 31, 2019

Electronic Tilt at Kīlauea Summit and East Rift Zone - Past Week

Electronic Tilt at Kīlauea Summit and East Rift Zone - Past Week. The blue line shows the radial tilt at Uwekahuna station (UWE), on the western rim of Kīlauea's caldera. The green line is radial tilt at Pu‘u ‘Ō‘ō (POO), north of Pu‘u ‘Ō‘ō cone. These are recorded by continuously operating electronic tiltmeters. Positive changes often indicate inflation of the magma 

...
Earthquake Hypocenters Cross Section - Past 5 Years - Kīlauea
December 31, 2019

Earthquake Hypocenters Cross Section - Past 5 Years - Kīlauea

 Depth of earthquakes (circles) during the past 5 years. Circle-size represents magnitude, and color indicates depth. 

Summit Vertical Motion - Past 5 Years Mauna Loa
December 31, 2019

Summit Vertical Motion - Past 5 Years

Summit Vertical Motion - Past 5 Years

Cross-caldera Distance Change - Past 5 Years Mauna Loa
December 31, 2019

Cross-caldera Distance Change - Past 5 Years Mauna Loa

Cross-caldera Distance Change - Past 5 Years Mauna Loa. Changes in distance between two GPS stations on opposite sides of Moku'āweoweo, Mauna Loa's summit caldera. Extension across the caldera is often an indication of inflation of the shallow summit magma reservoir.

Earthquake Hypocenters Map - Past Month - Kilauea
December 31, 2019

Earthquake Hypocenters Map - Past Month - Kīlauea

Map showing locations of earthquakes during the past month.

Earthquake Rates - Past 5 Years - Kīlauea
December 31, 2019

Earthquake Rates - Past 5 Years - Kīlauea

Number of earthquakes per month during the past 5 years (blue bars). The red line is the cumulative moment (energy) release. 

Earthquake Hypocenters Map - Past Week Mauna Loa
December 31, 2019

Earthquake Hypocenters Map - Past Week Mauna Loa

Earthquake Hypocenters Map and Cross Section - Past Week Mauna Loa. Map showing locations of earthquakes during the past week. 

Summit Vertical Motion - Past 5 Years Mauna Loa
December 31, 2019

Summit Vertical Motion - Past 5 Years Mauna Loa

Summit Vertical Motion - Past 5 Years Mauna Loa. Vertical motion of a GPS station on the southeast side of Mauna Loa's summit caldera. This station is in an area that has historically shown the largest amount of uplift with inflation. An offset in early 2014 is due to an equipment change at the station and is not related to deformation of the volcano.

Depth of Earthquakes - Past Month - Kīlauea
December 31, 2019

Depth of Earthquakes - Past Month - Kīlauea

Depth of earthquakes (circles) during the past month. Circle-size represents magnitude, and color indicates depth.

Filter Total Items: 1,825
USGS
June 10, 2019

A summary chronology and interesting facts about Kīlauea Volcano's 2018 lower East Rift Zone eruption and summit collapse.

routine inspection of a UAS system prior to a flight
June 6, 2019

The Hawaiian Volcano Observatory (HVO) is no rookie when it comes to using flight to assist with monitoring Hawaiian volcanoes. Helicopters and fixed-wing aircraft have transported HVO volcanologists for decades, giving them access for visual and thermal observations, equipment maintenance, and other geophysical and geochemical measurements.

Kīlauea that will be covered by a helicopter lidar survey in June 2019
May 30, 2019

Since the end of 2018's volcanic activity, USGS Hawaiian Volcano Observatory scientists have wanted to resurvey Kīlauea Volcano's ground surface to document changes brought about by the Puna eruption and summit collapse. Doing so would allow us to more accurately answer questions about the total volumes of erupted lava and summit subsidence that occurred last summer. 

lava fountain
May 23, 2019

May 24, 2019, is a notable date in Kīlauea Volcano's history. It is the one-year anniversary of several key events in the 2018 Kīlauea eruption, most notably, the reactivation of fissure 8 with intermittent spattering while fissures 7 and 21 were producing two ‘a‘ā flows.

USGS
May 22, 2019

This GIS dataset shows the evolution of the "June 27th" lava flow (episode 61e of the Pu‘u ‘Ō‘ō eruption) that was active from June 27, 2014, to June 8, 2016.

Students from the Teaching Through Technology (T3) Alliance
May 16, 2019

During the 2018 eruption of Kīlauea Volcano, when fissures erupted and lava flowed in the lower East Rift Zone (LERZ), many Puna residents were displaced from their homes. We, as a community, watched from the sidelines as the eruption went on, helpless in averting the course of nature.

Ash rises above Halema‘uma‘u within Kīlauea's summit caldera
May 9, 2019

A year ago, USGS Hawaiian Volcano Observatory scientists and Island of Hawai‘i residents were in the throes of an historically unprecedented series of events for Kīlauea.

11:47 a.m. HST. Scientist measures the surface temperature of a cra...
May 8, 2019

The team at the U.S. Geological Survey Hawaiian Volcano Observatory is one of several finalists nominated for the 2019 Service to America Medals.

A long skinny core section of mud with a sandy layer in the middle of it lays on the marsh grass near where the core was taken.
May 3, 2019

In a comprehensive survey of Hawaiian tsunami deposits, USGS scientists from the USGS Pacific Coastal and Marine Science Center and collaborators found evidence for a widespread tsunami striking the islands between 1250 and 1450 CE.

field crews of Hawaiian Volcano Observatory
May 2, 2019

With the one-year anniversary of the onset of Kīlauea Volcano's 2018 lower East Rift Zone eruption upon us, USGS Hawaiian Volcano Observatory (HVO) staff, like many Hawai‘i residents, are reflecting on this historic event. 

Preview image of timelapse sequence at Mauna Loa's summit
April 29, 2019

This timelapse sequence of webcam images over a 24-hour period shows a typical day at the summit of Mauna Loa. 

USGS
April 27, 2019

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.2 earthquake on Saturday, April 27, 2019, at 5:26 p.m. HST.

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