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Filter Total Items: 66
USGS
Date Published: March 2, 2016

Hawaiian Volcano Observatory (HVO)

HVO operates monitoring networks, assesses hazards, and issues notifications of volcanic activity and earthquakes in the State of Hawai‘i. HVO scientists conduct fundamental research on volcanic processes and work to educate the communities at risk. HVO is located in Hawaiʻi Volcanoes National Park on the Island of Hawaii.

Image: Waterfall, Maui, Hawaii
Date Published: November 17, 2015
Status: Active

Webinar: Turning Ecological Stream Classifications into Actionable Science

View this webinar to learn about stream classification efforts in Hawai'i.

Contacts: Ralph Tingley
Sea Urchin (Tripneustes gratilla) in Coastal Waters of Hawaii
Date Published: September 10, 2014
Status: Completed

Sea Urchin Mortality in the Hawaiian Islands

Scientists from the U.S. Geological Survey (USGS), University of Hawaii, the State of Hawaii Division of Aquatic Resources, and The Nature Conservancy are investigating unusual mortality of collector urchins (Tripneustes gratilla) that has been ongoing since February 2014. As grazers, urchins play a critical role in preventing overgrowth of algae on tropical coral reefs. Awareness of...

Contacts: Thierry M Work
Thumbnail of a poster which is laid out with photos, images, and text.
Date Published: January 1, 2005
Status: Completed

Mud Damages Hawaiian Coral Reefs

Information about the USGS Pacific Coastal and Marine Science Center's research from 2000-2004, on how mud damages hawaiian coral reefs.

Thumbnail of a poster which is laid out with photos, images, and text.
Date Published: January 1, 2004
Status: Completed

Island-hopping Coral Larvae in Hawaii

Information about the USGS Pacific Coastal and Marine Science Center's 2003 study on island-hopping coral larvae in Hawaii.

Contacts: Curt Storlazzi
Thumbnail of a poster which is laid out with photos, images, and text.
Date Published: January 1, 2001
Status: Completed

Giant Hawaiian Underwater Landslides

Information about the USGS Pacific Coastal and Marine Science Center's studies of giant underwater landslides in 1986 and 1988.

Filter Total Items: 297
Thermal map of fissure system and lava flows
June 16, 2018

This thermal map shows the fissure system and lava flows as of 6 am on Saturday, June 16.

Map showing lower East Rift Zone lava flows and fissures
June 15, 2018

Map as of 10:00 a.m. HST, June 15, 2018

Map showing lower East Rift Zone lava flows and fissures
June 14, 2018

Map as of 11:00 a.m. HST, June 14, 2018

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

This thermal map shows the fissure system and lava flows as of 6 am on Thursday June 14

Map showing lower East Rift Zone lava flows and fissures
June 13, 2018

Map as of 10:00 a.m. HST, June 13, 2018

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

This thermal map shows the fissure system and lava flows as of 12:30 pm on Tuesday, June 5

Map showing lower East Rift Zone lava flows and fissures
June 11, 2018

Map as of 3:00 p.m. HST, June 11, 2018

Map showing lower East Rift Zone lava flows and fissures
June 10, 2018

Map as of 12:00 p.m. (noon) HST, June 10, 2018

Thermal map of fissure system and lava flows
June 10, 2018

This thermal map shows the fissure system and lava flows as of 6:45 am on Sunday, June 10

Thermal map of fissure system and lava flows
June 9, 2018

This thermal map shows the fissure system and lava flows as of 5:30 pm on Saturday, June 9

Map showing lower East Rift Zone lava flows and fissures
June 9, 2018

Map as of 10:00 a.m. HST, June 9, 2018

Thermal map of Fissure 8 lava flow at coast
June 8, 2018

This thermal map shows the Fissure 8 lava flow along the coast, as of 12:30 pm on Friday, June 8

Filter Total Items: 108
Publication Thumbnail
Year Published: 2008

Effects of the H-3 Highway Stormwater Runoff on the Water Quality of Halawa Stream, Oahu, Hawaii, November 1998 to August 2004

Since November 1998, water-quality data have been collected from the H-3 Highway Storm Drain C, which collects runoff from a 4-mi-long viaduct, and from Halawa Stream on Oahu, Hawaii. From January 2001 to August 2004, data were collected from the storm drain and four stream sites in the Halawa Stream drainage basin as part of the State of Hawaii...

Wolff, Reuben H.; Wong, Michael F.
Effects of the H-3 Highway Stormwater Runoff on the Water Quality of Halawa Stream, Oahu, Hawaii, November 1998 to August 2004; 2008; SIR; 2008-5034; Wolff, Reuben. H.; Wong, Michael F.

Publication Thumbnail
Year Published: 2007

Variations in Community Exposure and Sensitivity to Tsunami Hazards in the State of Hawai'i

Hawai`i has experienced numerous destructive tsunamis and the potential for future events threatens the safety and economic well being of its coastal communities. Although tsunami-evacuation zones have been delineated, what is in these areas and how communities have chosen to develop within them has not been documented. A community-level...

Wood, Nathan; Church, Alyssia; Frazier, Tim; Yarnal, Brent
Variations in Community Exposure and Sensitivity to Tsunami Hazards in the State of Hawai'i; 2007; SIR; 2007-5208; Wood, Nathan; Church, Alyssia; Frazier, Tim; Yarnal, Brent

Publication Thumbnail
Year Published: 2007

Effects of Agricultural Land-Use Changes and Rainfall on Ground-Water Recharge in Central and West Maui, Hawai`i, 1926-2004

Concern surrounding declines in ground-water levels and an increase in the chloride concentration of water pumped from wells in the Iao aquifer system on the Island of Maui has prompted an investigation into the long-term sustainability of current (2006) and future ground-water withdrawals. As part of this investigation, a water budget for central...

Engott, John A.; Vana, Thomas T.
Effects of Agricultural Land-Use Changes and Rainfall on Ground-Water Recharge in Central and West Maui, Hawai`i, 1926-2004; 2007; SIR; 2007-5103; Engott, John A.; Vana, Thomas T.

Publication Thumbnail
Year Published: 2007

Effects of Ground-Water Withdrawal on Kaunakakai Stream Environmental Restoration Plan, Moloka`i, Hawai`i

The U.S. Army Corps of Engineers, in cooperation with the County of Maui Department of Public Works and Environmental Management, has proposed to construct 2.75 acres of shallow ponds and mudflats near the mouth of Kaunakakai Stream, Moloka`i, Hawai`i to restore habitat for the endangered native Hawaiian Stilt. Kaunakakai Stream is ephemeral...

Oki, Delwyn S.
Effects of Ground-Water Withdrawal on Kaunakakai Stream Environmental Restoration Plan, Moloka`i, Hawai`i; 2007; SIR; 2007-5128; Oki, Delwyn S.

Publication Thumbnail
Year Published: 2007

Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2006 to June 30, 2007

Storm runoff water-quality samples were collected as part of the State of Hawaii Department of Transportation Stormwater Monitoring Program. This program is designed to assess the effects of highway runoff and urban runoff on Halawa Stream. For this program, rainfall data were collected at two stations, continuous streamflow data at three stations...

Young, Stacie T.M.; Jamison, Marcael T.J.
Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2006 to June 30, 2007; 2007; OFR; 2007-1213; Young, Stacie T. M.; Jamison, Marcael T. J.

Publication Thumbnail
Year Published: 2007

Natural and Diverted Low-Flow Duration Discharges for Streams Affected by the Waiahole Ditch System, Windward O`ahu, Hawai`i

For nearly a century, the Waiahole Ditch System has diverted an average of approximately 27 million gallons per day of water from the wet, northeastern part of windward O`ahu, Hawai`i, to the dry, central part of the island to meet irrigation needs. The system intercepts large amounts of dike-impounded ground water at high altitudes (above...

Yeung, Chiu W.; Fontaine, Richard A.
Natural and Diverted Low-Flow Duration Discharges for Streams Affected by the Waiahole Ditch System, Windward O`ahu, Hawai`i; 2007; SIR; 2006-5285; Yeung, Chiu W.; Fontaine, Richard A.

Publication Thumbnail
Year Published: 2007

Water Use in Wetland Kalo Cultivation in Hawai`i

Ten cultivation areas (8 windward, 2 leeward) were selected for a kalo water-use study, primarily on the basis of the diversity of environmental and agricultural conditions under which wetland kalo is grown and landowner permission and availability. Flow and water-temperature data were collected at the lo`i complex level and at the individual lo`i...

Gingerich, Stephen B.; Yeung, Chiu W.; Ibarra, Tracy-Joy N.; Engott, John A.
Water Use in Wetland Kalo Cultivation in Hawai`i; 2007; OFR; 2007-1157; Gingerich, Stephen B.; Yeung, Chiu W.; Ibarra, Tracy-Joy N.; Engott, John A.

Publication Thumbnail
Year Published: 2007

Ground-Water Nutrient Flux to Coastal Waters and Numerical Simulation of Wastewater Injection at Kihei, Maui, Hawaii

Water sampling and numerical modeling were used to estimate ground-water nutrient fluxes in the Kihei area of Maui, where growth of macroalgae (seaweed) on coral reefs raises ecologic concerns and accumulation on beaches has caused odor and removal problems. Fluxes and model results are highly approximate, first-order estimates because very few...

Hunt, Charles D.
Ground-Water Nutrient Flux to Coastal Waters and Numerical Simulation of Wastewater Injection at Kihei, Maui, Hawaii; 2007; SIR; 2006-5283; Hunt, Charles D., Jr.

Publication Thumbnail
Year Published: 2006

Water Resources Data: Hawaii and Other Pacific Areas, Water Year 2005. Volume 1. Hawaii

Water resources data for the 2005 water year for Hawaii consist of records of stage, discharge, and water quality of streams and springs; water levels and quality of water wells; and rainfall totals. * Water discharge for 59 gaging stations on streams, springs, and ditches. * Water-quality data for 6 streams. * Water levels for 80 observation...

Fontaine, Richard A.
Water Resources Data: Hawaii and Other Pacific Areas, Water Year 2005. Volume 1. Hawaii; 2006; WDR; HI-05-1; Fontaine, Richard A.

Publication Thumbnail
Year Published: 2006

Effects of Surface-Water Diversion and Ground-Water Withdrawal on Streamflow and Habitat, Punaluu Stream, Oahu, Hawaii

The surface- and ground-water resources of the Punaluu area of northeast Oahu, Hawaii, have been and continue to be important for cultural, domestic, agricultural, recreational, and aesthetic purposes. Punaluu Stream flows perennially because rain falls frequently in the area and ground water discharges to the stream. Flow in Punaluu Stream is...

Oki, Delwyn S.; Wolff, Reuben H.; Perreault, Jeff A.
Effects of Surface-Water Diversion and Ground-Water Withdrawal on Streamflow and Habitat, Punaluu Stream, Oahu, Hawaii; 2006; SIR; 2006-5153; Oki, Delwyn S.; Wolff, Reuben H.; Perreault, Jeff A.

Publication Thumbnail
Year Published: 2006

Numerical Simulation of the Hydrologic Effects of Redistributed and Additional Ground-Water Withdrawal, Island of Molokai, Hawaii

Because of increased demand for water associated with a growing population, projected increases in demand over the next few decades, and rising salinity of the water pumped from some existing wells, the County of Maui Department of Water Supply (DWS) is currently (2006) considering drilling additional wells to replace or supplement existing wells...

Oki, Delwyn S.
Numerical Simulation of the Hydrologic Effects of Redistributed and Additional Ground-Water Withdrawal, Island of Molokai, Hawaii; 2006; SIR; 2006-5177; Oki, Delwyn S.

Publication Thumbnail
Year Published: 2006

Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2005 to June 30, 2006

Storm runoff water-quality samples were collected as part of the State of Hawaii Department of Transportation Stormwater Monitoring Program. This program is designed to assess the effects of highway runoff and urban runoff on Halawa Stream. For this program, rainfall data were collected at two stations, continuous discharge data at one station,...

Presley, Todd K.; Jamison, Marcael T.J.; Young-Smith, Stacie T. M.
Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2005 to June 30, 2006; 2006; OFR; 2006-1223; Presley, Todd K.; Jamison, Marcael T. J.; Young-Smith, Stacie T. M.

Filter Total Items: 1,463
Lava flow thickness 2018
December 31, 2018

Lava flow thickness 2018

This preliminary thickness map of Kīlauea Volcano's 2018 lower East Rift Zone lava flows was calculated by subtracting pre-eruption ground surface elevations from post-eruption ground surface elevations mapped with USGS Unmanned Aerial System (drone) flights. The drones acquired 2,800 aerial photos from which 1.5 billion common points were automatically selected by Surface

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Wind turbines and trees against sky at sunset.
December 31, 2018

Windmills at sunset, Oʻahu

Turbines at a wind energy site on Oʻahu, Hawaiʻi.

 Department of Interior UAS pilots
December 31, 2018

UAS pilots at Kilauea

Department of Interior UAS pilots from left to right – Elizabeth Pendleton (USGS, Woods Hole, MA), Colin Milone (Office of Aviation Services, AK), John Vogel (USGS; Flagstaff, AZ), Sandy Brosnahan (USGS, Woods Hole, MA), Brandon Forbes (USGS; Tucson, AZ), Chris Holmquist-Johnson (USGS; Fort Collins, CO), Hannah Dietterich (USGS; Anchorage, AK), and Emily Sturdivant (USGS,

...
View from the sky of a massive lava flow with glowing lava and smoke coming from a fissure in the earth.
December 31, 2018

Fissure 8 cone and 8-mile lava flow

An aerial view, collected from a USGS UAS, of Hawai‛i’s fissure 8 cone, and the start of the 8-mile lava flow to reach the ocean entry point.

December 31, 2018

Hovering Above—UAS’ Role in the 2018 Kīlauea Volcano Eruption Response

The 2018 Kīlauea Volcano eruption marked the first time the federal government used Unmanned Aircraft Systems (UAS) to assist in an eruption response in the United States. The UAS were used to survey areas otherwise inaccessible or too hazardous for field crews or manned aircraft, collect multiple types of data, and provide 24/7 real-time situational awareness at Kīlauea

...
December 31, 2018

Hovering Above—UAS’ Role in the 2018 Kīlauea Volcano Eruption (AD)

The 2018 Kīlauea Volcano eruption marked the first time the federal government used Unmanned Aircraft Systems (UAS) to assist in an eruption response in the United States. The UAS were used to survey areas otherwise inaccessible or too hazardous for field crews or manned aircraft, collect multiple types of data, and provide 24/7 real-time situational awareness at Kīlauea

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progression of the magmatic intrusion from Kīlauea
December 31, 2018

progression of the magmatic intrusion from Kīlauea

Earthquakes (red dots) track the progression of the magmatic intrusion from Kīlauea Volcano's middle East Rift Zone to the lower East Rift Zone between April 30 and May 3, 2018. Orange triangles show the locations of fissure 1 (right), which erupted on May 3, and Pu‘u ‘Ō‘ō (left). The earthquakes shown here are well-located with magnitudes less than 3.5 and depths

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November 29, 2018

Impact of Future Climate and Non-Natives on HI's Aquatic Ecosystems

A warming climate will have fundamental impacts on freshwater, a critical driver of tropical island ecosystems. Declining baseflows are of particular concern as they threaten to interrupt the link between the freshwater habitats of adult migratory fish and the marine environments where their larvae grow and disperse, especially where habitat availability is already limited

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Image of yellow bat against blue and red background.
November 9, 2018

Near-infrared image of a bat in flight

A near-infrared image of a Hawaiian Hoary bat in flight is part of a project to measure bat activity on a wind energy site on Oʻahu, Hawaiʻi.

November 7, 2018

3D model of Pu‘u ‘Ō‘ō's crater

This 3D model of Pu‘u ‘Ō‘ō's crater was created from thermal images during an overflight of the cone. The deepest portion of the crater is about 320 meters (1050 feet) below the crater floor that existed prior to April 30.

panoramic view, Hawai‘i Volcanoes National Park's Crater Rim Drive
October 16, 2018

panoramic view, Hawai‘i Volcanoes National Park's Crater Rim Drive

In this panoramic view, Hawai‘i Volcanoes National Park's Crater Rim Drive (left foreground) disappears into the enormous void created by the collapse of Halema‘uma‘u and portions of the Kīlauea caldera floor during the dramatic events at the summit of the volcano in May-August 2018.

September 11, 2018

Kīlauea Summit

The Unmanned Aircraft Systems (UAS) team completed its mission at Kīlauea Volcano's summit, mapping changes within the caldera. Since August 4, 2018, the number of earthquakes at the summit have decreased and the rate of subsidence has stabilized. Sulfur dioxide (SO2) emission rates at the summit is less than 200 tonnes/day, which is lower than at any time since

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Filter Total Items: 1,438
USGS
February 22, 2019

Information about how to stay informed about Hawaiian volcanoes.

USGS
February 22, 2019

A temporary monitoring camera on the west rim of Kīlauea caldera now provides views looking east toward the bottom of the recently enlarged Halema‘uma‘u.

test flight of an unmanned aerial system
February 21, 2019

With the end of Kīlauea Volcano's 2018 lower East Rift Zone eruption, the Island of Hawai‘i was able, at long last, to say goodbye to strong vog—volcanic smog produced by voluminous sulfur dioxide (SO2) emissions.

USGS
February 19, 2019

January 2019 is Hawaiʻi Island's 10th annual Volcano Awareness Month.

Hawaii that extend offshore
February 14, 2019

Earthquakes in Hawaii are intimately related to the volcanoes. In addition to helping scientists track moving magma, sometimes they happen simply because the earth under the island chain gets bent out of shape.

Fissure 8 reactivated on the afternoon of May 28 and at times, was ...
February 7, 2019

The 2018 lower East Rift Zone (LERZ) eruption of Kīlauea brought an end to the 35+ year eruption at Pu‘u ‘Ō‘ō. With the draining of the summit and the collapse of Pu‘u ‘Ō‘ō, Puna residents were concerned that the eruption in the LERZ could be long-lived.

helicopter overflight
January 31, 2019

One of the most frequent questions asked of USGS Hawaiian Volcano Observatory (HVO) scientists the last several months has been, “Is the lower East Rift eruption over?” But the same question could – and should – be asked of the Pu‘u ‘Ō‘ō eruption.

USGS
January 18, 2019

Due to the lapse in appropriations, USGS Hawaiian Volcano Observatory scientists are unable to present public lectures as planned.

USGS
January 6, 2019

Due to the lapse in appropriations, USGS Hawaiian Volcano Observatory scientists are unable to present lectures as planned. 

USGS
December 21, 2018

During the current federal government shutdown, the Volcano Hazard Program and all five U.S. Volcano Observatories will continue to issue updates, warnings, and notifications through the usual channels, including websites, email, and social media. 

midwinter dawn at Halema‘uma‘u
December 20, 2018

The field day begins with a summit weather check at first light. It is a reflective moment at 6:15 AM atop Kīlauea Volcano, and the fumarole cracks are steaming like the coffee from my thermos. The weather at Halema‘uma‘u crater is cool and dry, with light trade winds from the northeast. We hope for these mornings.

Kīlauea Volcano’s 2018 summit collapse
December 13, 2018

January 2019 marks the 10th annual “Volcano Awareness Month” on the Island of Hawai‘i.