Unified Interior Regions

Hawaii

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.

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Filter Total Items: 367
Map showing lower East Rift Zone lava flows and fissures
June 28, 2018

Map as of 2:00 p.m. HST, June 28, 2018

Thermal map of fissure system and lava flows
June 27, 2018

This thermal map shows the fissure system and lava flows as of 6 am on Wednesday, June 27

Map showing lower East Rift Zone lava flows and fissures
June 26, 2018

Map as of 10:00 a.m. HST, June 26, 2018.

Thermal map of fissure system and lava flows
June 26, 2018

This thermal map shows the fissure system and lava flows as of 6 am on Tuesday, June 26

Map showing lower East Rift Zone lava flows and fissures
June 25, 2018

Map as of 2:00 p.m. HST, June 25, 2018

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

This thermal map shows the fissure system and lava flows as of 6 am on Sunday, June 24

Map showing lower East Rift Zone lava flows and fissures
June 22, 2018

Map as of 2:00 p.m. HST, June 22, 2018

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

This thermal map shows the fissure system and lava flows as of 6 am on Thursday, June 21.

Map showing lower East Rift Zone lava flows and fissures
June 19, 2018

Map as of 1:00 p.m. HST, June 19, 2018

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

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

Map showing lower East Rift Zone lava flows and fissures
June 18, 2018

Map as of 9:00 a.m. HST, June 18, 2018

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.

Filter Total Items: 118
Publication Thumbnail
Year Published: 2001

Analytical Versus Numerical Estimates of Water-Level Declines Caused by Pumping, and a Case Study of the Iao Aquifer, Maui, Hawaii

Comparisons were made between model-calculated water levels from a one-dimensional analytical model referred to as RAM (Robust Analytical Model) and those from numerical ground-water flow models using a sharp-interface model code. RAM incorporates the horizontal-flow assumption and the Ghyben-Herzberg relation to represent flow in a one-...

Oki, Delwyn S.; Meyer, William
Analytical Versus Numerical Estimates of Water-Level Declines Caused by Pumping, and a Case Study of the Iao Aquifer, Maui, Hawaii; 2001; WRI; 2000-4244; Oki, Delwyn S.; Meyer, William

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Year Published: 2001

The Response of the Iao Aquifer to Ground-Water Development, Rainfall, and Land-Use Practices Between 1940 and 1998, Island of Maui, Hawaii

Ground water pumped from the Iao aquifer has been used for agricultural purposes since 1948, and domestic purposes since 1955. In 1990, the Hawaii State Commission on Water Resource Management established a value of 20 million gallons per day for the sustainable yield of the aquifer. Water-level data from observation wells throughout the aquifer...

Meyer, William; Presley, Todd K.
The Response of the Iao Aquifer to Ground-Water Development, Rainfall, and Land-Use Practices Between 1940 and 1998, Island of Maui, Hawaii; 2001; WRI; 2000-4223; Meyer, William; Presley, Todd K.

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Year Published: 2001

Sedimentation History of Waimaluhia Reservoir during Highway Construction, Oahu, Hawaii, 1983-98

Nine sedimentation surveys conducted from 1983 to 1998 at Waimaluhia Reservoir determined the rate of sediment accumulation in the reservoir during H-3 Highway construction upstream of the reservoir. Rates of storage-capacity loss ranged from 1.1 acre-feet per year between 1983 and 1988 to 4.9 acre-feet per year between 1988 and 1992. The average...

Wong, Michael F.
Sedimentation History of Waimaluhia Reservoir during Highway Construction, Oahu, Hawaii, 1983-98; 2001; WRI; 2001-4001; Wong, Michael F.

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Year Published: 2001

Statistical Summary of Hydrologic and Water-Quality Data from the Halawa, Haiku, and Kaneohe Drainage Basins Before, During, and After H-3 Highway Construction, Oahu, Hawaii, 1983-99

This report provides statistical summaries of rainfall, streamflow, suspended-sediment, and water-quality data collected in the Halawa, Haiku, and Kaneohe drainage basins before, during, and after construction of the H-3 Highway on the island of Oahu, Hawaii. Methods of data collection also are described. Data collected during water years 1983...

Wong, Michael F.; Young, Stacie T.M.
Statistical Summary of Hydrologic and Water-Quality Data from the Halawa, Haiku, and Kaneohe Drainage Basins Before, During, and After H-3 Highway Construction, Oahu, Hawaii, 1983-99; 2001; OFR; 2001-64; Wong, Michael F.; Young, Stacie T. M.

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Year Published: 2001

Seismic hazard in Hawaii: High rate of large earthquakes and probabilistics ground-motion maps

The seismic hazard and earthquake occurrence rates in Hawaii are locally as high as that near the most hazardous faults elsewhere in the United States. We have generated maps of peak ground acceleration (PGA) and spectral acceleration (SA) (at 0.2, 0.3 and 1.0 sec, 5% critical damping) at 2% and 10% exceedance probabilities in 50 years. The...

Klein, F. W.; Frankel, A.D.; Mueller, C.S.; Wesson, R.L.; Okubo, P. G.
Seismic hazard in Hawaii: High rate of large earthquakes and probabilistics ground-motion maps; 2001; Article; Journal; Bulletin of the Seismological Society of America; Klein, F. W.; Frankel, A. D.; Mueller, C. S.; Wesson, R. L.; Okubo, P. G.

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Year Published: 2000

Site Selection for a Deep Monitor Well, Kualapuu, Molokai, Hawaii

Management of the ground-water resources near Kualapuu on the island of Molokai, Hawaii, is hindered by the uncertainty in the vertical salinity structure in the aquifer. In the State of Hawaii, vertical profiles of ground-water salinity are commonly obtained from deep monitor wells, and these profiles are used to estimate the thicknesses of the...

Oki, Delwyn S.
Site Selection for a Deep Monitor Well, Kualapuu, Molokai, Hawaii; 2000; WRI; 99-4291; Oki, Delwyn S.

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Year Published: 2000

Gravitational stability of three-dimensional stratovolcano edifices

Catastrophic flank collapses have occurred at many stratovolcanoes worldwide. We present a three-dimensional (3-D) slope stability analysis for assessing and quantifying both the locations of minimum edifice stability and the expected volumes of potential failure. Our approach can search the materials underlying a topographic surface, represented...

Reid, M.E.; Christian, S.B.; Brien, D.L.

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Year Published: 1996

Summary of the Oahu, Hawaii, Regional Aquifer-System Analysis

Oahu, the third largest of the Hawaiian islands, is formed by the eroded remnants of two elongated shield volcanoes with broad, low profiles. Weathering and erosion have modified the original domed surfaces of the volcanoes, leaving a landscape of deep valleys and steep interfluvial ridges in the interior highlands. The Koolau Range in eastern...

Nichols, William D.; Shade, Patricia J.; Hunt, Charles D.
Summary of the Oahu, Hawaii, Regional Aquifer-System Analysis; 1996; PP; 1412-A; Nichols, William D.; Shade, Patricia J.; Hunt, Charles D., Jr.

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Year Published: 1995

Estimated Water Use in 1990, Island of Kauai, Hawaii

The estimated total quantity of freshwater withdrawn on the island of Kauai, Hawaii, in 1990 was 370.84 million gallons per day of which 46.29 million gallons per day (12 percent) was from ground-water sources, and 324.55 million gallons per day (88 percent) was from surface-water sources. An additional estimated 40.94 million gallons per day of...

Shade, Patricia J.
Estimated Water Use in 1990, Island of Kauai, Hawaii; 1995; WRI; 93-4180; Shade, Patricia J.

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Year Published: 1990

National water summary 1987: Hydrologic events and water supply and use

Water use in the United States, as measured by freshwater withdrawals in 1985, averaged 338,000 Mgal/d (million gallons per day), which is enough water to cover the 48 conterminous States to a depth of about 2.4 inches. Only 92,300 Mgal/d, or 27.3 percent of the water withdrawn, was consumptive use and thus lost to immediate further use; the...

Carr, Jerry E.; Chase, Edith B.; Paulson, Richard W.; Moody, David W.
National water summary 1987: hydrologic events and water supply and use; 1990; WSP; 2350; Carr, Jerry E.; Chase, Edith B.; Paulson, Richard W.; Moody, David W.

Filter Total Items: 2,120
Color photograph of volcanic vent
April 21, 2021

April 20, 2021 — Kīlauea vent

A telephoto view of the west vent and lava lake inlet within Halema‘uma‘u crater at the summit of Kīlauea. Lava erupting from the west vent (upper left) continues to feed into the active lava lake through a wide inlet near the base of the cone (center right). This photo was taken from the south rim of Halema‘uma‘u crater, in an area of Hawai‘i Volcanoes National Park that

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Color photograph of lava lake
April 21, 2021

April 20, 2021 — Kīlauea lava lake

Lava continues to erupt from the west vent within Halema‘uma‘u crater and feed the active lava lake at Kīlauea summit. Volcanic gas emissions from the west vent (lower left) remain elevated and were last measured on April 14 at about 950 t/d. This photo was taken from the west rim of Halema‘uma‘u, in an area of Hawai‘i Volcanoes National Park that remains closed to the

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Color photograph of lava lake
April 21, 2021

April 20, 2021 — Kīlauea lava lake and rocks

A telephoto view of the southern lava lake crust and Halema‘uma‘u crater wall at the summit of Kīlauea. Many rockfalls from the steep and unstable crater walls of Halema‘uma‘u have deposited large boulders onto the stagnant lava surface over the past few months. This photo was taken from the west rim of Halema‘uma‘u looking southeast. USGS photo taken by L. DeSmither on

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Color animated gif of lava lake rise
April 20, 2021

Kīlauea summit eruption four-month anniversary

April 20 was the four-month anniversary of Kīlauea's ongoing summit eruption in Halema‘uma‘u. This animated GIF features approximately one thermal image for each day of the eruption and demonstrates eruptive activity over the past four months. At 9:30 p.m. HST on December 20, 2020, vents opened in the northwest and north walls of Halema‘uma‘u, erupting lava and vaporizing

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April 17, 2021

Kīlauea Summit Lava Lake (April 17, 2021)

The lava lake in Halema‘uma‘u Crater, at the summit of Kīlauea Volcano, remains active. This video is shown at 30x speed and shows the lava supplying the lake from the western fissure, with scattered crustal foundering across the lake surface. 
 

April 17, 2021

Kīlauea Lava Lake Inlet (April 17, 2021)

The lava lake in Halema‘uma‘u Crater, at the summit of Kīlauea Volcano, remains active. This video is shown at 20x speed and shows the lava supplying the lake from the western fissure. 
 

April 17, 2021

Kīlauea West Fissure Spatter (April 17, 2021)

The lava lake in Halema‘uma‘u Crater, at the summit of Kīlauea Volcano, remains active. This video shows spattering from a small vent at the western fissure. 
 

Color photograph of lava lake
April 16, 2021

April 16, 2021: Overview of Halema‘uma‘u lava lake western portion

During a Kīlauea summit helicopter overflight on Friday, April 16, an HVO scientist captured this photo of the erupting western fissure and surrounding lava lake within Halema‘uma‘u. The active western potion of the lava lake, as seen here, measured approximately 300 m (984 ft) from end-to-end at the time. USGS image.

An HVO geologist surveys the lava lake from the eastern rim of Halema‘uma‘u Crater
April 16, 2021

Halema‘uma‘u, Kīlauea summit—April 16, 2021

An HVO geologist surveys the lava lake from the eastern rim of Halema‘uma‘u Crater, at the summit of Kīlauea. The cliff that covers most of the top half of the photo formed during the collapse events of 2018, and gives a sense of the scale of that event. USGS photo by M. Patrick on April 16, 2021.

A view of the south margin of the perched lava lake in Halema‘uma‘u Crater
April 16, 2021

Halema‘uma‘u lava lake, Kīlauea summit eruption—April 16, 2021

A view of the south margin of the perched lava lake in Halema‘uma‘u Crater, at the summit of Kīlauea. This photo was taken from the east rim of the crater, and shows the steep levee containing the lake. USGS photo by M. Patrick.

A view of the lava lake from the east rim of Halema‘uma‘u Crater
April 16, 2021

Halema‘uma‘u lava lake, Kīlauea summit eruption—April 16, 2021

A view of the lava lake from the east rim of Halema‘uma‘u Crater, at the summit of Kīlauea. The active portion of the lake is present at the far (western) end of the crater. USGS photo by M. Patrick on April 16, 2021.

Color map of lava lake temperature
April 16, 2021

April 19, 2021—Kīlauea summit eruption thermal map

A helicopter overflight on April 16, 2021, at approximately 12 p.m. HST allowed for aerial visual and thermal imagery to be collected of the eruption within Halema‘uma‘u crater at the summit of Kīlauea Volcano. Active surface lava is largely limited to the western side of the lake; the eastern portion of the lake has stagnated and is dominated by cooling, solidified crust

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Filter Total Items: 2,298
Aerial photograph of the Pāhala area, on the southern side of the Island of Hawaiʻi, taken on December 11, 1976
March 25, 2021

A new project at the USGS Hawaiian Volcano Observatory (HVO) is once again making use of old aerial photographs and field notes that were used to make geologic and hazard maps. Buried within hundreds of old mapping photos and field notes are the locations and thicknesses of several ash deposits on the flanks of Mauna Loa that have never been fully quantified. 

A wide view of the lava lake within Halema‘uma‘u crater at Kīlauea summit
March 25, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; the west vent in Halema‘uma‘u erupts lava into the lava lake. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear and PPE—monitor the current eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

The lava lake in Halema‘uma‘u crater, at the summit of Kīlauea, remains active
March 24, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; the west vent in Halema‘uma‘u erupts lava into the lava lake. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear and PPE—monitor the current eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

UAS close-up of island in eastern portion of Halema‘uma‘u lava lake, March 16, 2021
March 23, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; the west vent in Halema‘uma‘u erupts lava into the lava lake. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear and PPE—monitor the current eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

Lava continued to erupt from the west vent in Halema‘uma‘u crater at Kīlauea Volcano's summit
March 19, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; the west vent in Halema‘uma‘u erupts lava into the lava lake. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear and PPE—monitor the current eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

Active lava lake at the summit of Kīlauea Volcano
March 18, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; the west vent in Halema‘uma‘u erupts lava into the lava lake. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear and PPE—monitor the current eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

USGS science for a changing world
March 18, 2021

Mauna Loa Volcano is not erupting. A small swarm of shallow seismicity, that began at 1:00 a.m. HST this morning, is occurring beneath the upper Ka‘ōiki seismic zone, under Mauna Loa’s southeast flank and northwest of Kīlauea's summit. Other Mauna Loa monitoring data streams remain stable and show no signs of increased activity.

Scientist services one of the temporary seismometers deployed on the down-drop block at Kīlauea summit
March 18, 2021

Ocean swells occur continuously around the world. As these swells rise and fall, they couple with the ocean floor below them creating a constant signal. These signals, called oceanic microseisms, travel through the solid earth and are observed at the surface using instruments called seismometers.  

View of the lava lake from the south rim of Halema‘uma‘u, at the summit of Kīlauea
March 17, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; the west vent in Halema‘uma‘u erupts lava into the lava lake. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear and PPE—monitor the current eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

View of the lava lake from the south rim of Halema‘uma‘u, at the summit of Kīlauea
March 16, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; the west vent in Halema‘uma‘u erupts lava into the lava lake. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear and PPE—monitor the current eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.

USGS science for a changing world
March 14, 2021

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.1  earthquake located beneath Kīlauea Volcano's south flank on Sunday, March 14, at 8:59 p.m., HST.

Color photograph of lava lake and vent
March 12, 2021

Kīlauea's summit eruption continues on the Island of Hawai‘i; the west vent in Halema‘uma‘u erupts lava into the lava lake. Gas emissions and seismic activity at the summit remain elevated. HVO field crews—equipped with specialized safety gear and PPE—monitor the current eruption from within the closed area of Hawai‘i Volcanoes National Park with NPS permission.