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Filter Total Items: 297
Map showing lower East Rift Zone lava flows and fissures
June 1, 2018

Map as of 6:00 p.m. HST, June 1, 2018.

Map showing lower East Rift Zone lava flows and fissures
June 1, 2018

Map as of 10:00 a.m. HST, June 1, 2018.

Map showing lower East Rift Zone lava flows and fissures
May 31, 2018

Map as of 2:00 p.m. HST, May 31, 2018.

Thermal map of fissure system and lava flows
May 31, 2018

This thermal map shows the fissure system and lava flows as of 12:15 pm on Thursday, May 31.

Map showing fissure flows
May 31, 2018

Map as of 9:00 a.m. HST, May 31, 2018.

Thermal map of fissure system and lava flows
May 30, 2018

This thermal map shows the fissure system and lava flows as of 12:15 pm on Wednesday, May 30.

Map showing fissure flows
May 30, 2018

Map as of 9:00 a.m. HST, May 30, 2018.

Map showing fissure flows
May 30, 2018

Map as of 3:00 p.m. HST, May 30, 2018.

Map showing fissure flows
May 29, 2018

Map as of 6:00 p.m. HST, May 29, 2018.

Map showing fissure flows
May 28, 2018

Map as of May 28, 2018 3:00 p.m. HST

Thermal map of fissure system and lava flows
May 28, 2018

This thermal map shows the fissure system and lava flows as of 1:15 pm on Monday, May 28.

Map showing fissure flows
May 27, 2018

Map as of 2:30 p.m. HST, May 27, 2018.

Filter Total Items: 108
Publication Thumbnail
Year Published: 2003

Availability and Distribution of Base Flow in Lower Honokohau Stream, Island of Maui

Honokohau Stream is one of the few perennial streams in the Lahaina District of West Maui. Current Honokohau water-use practices often lead to conflicts among water users, which are most evident during periods of base flow. To better manage the resource, data are needed that describe the availability and distribution of base flow in lower...

Fontaine, Richard A.
Availability and Distribution of Base Flow in Lower Honokohau Stream, Island of Maui; 2003; WRI; 2003-4060; Fontaine, Richard A.

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Year Published: 2003

Paleointensity in Hawaiian Scientific Drilling Project Hole (HSDP2): Results from submarine basaltic glass

Paleointensity estimates based on the high quality Thellier‐Thellier data from the early Brunhes (420–780 ka) are rare (only 30 in the published literature). The Second Hawaiian Scientific Drilling Project (HSDP2) drill hole recovered submarine volcanics spanning the approximate time period of 420–550 ka. These are of particular interest for...

Tauxe, L.; Love, Jeffrey J.

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Year Published: 2003

Environmental Setting and the Effects of Natural and Human-Related Factors on Water Quality and Aquatic Biota, Oahu, Hawaii

The island of Oahu is the third largest island of the State of Hawaii, and is formed by the eroded remnants of the Waianae and Koolau shield volcanoes. The landscape of Oahu ranges from a broad coastal plain to steep interior mountains. Rainfall is greatest in the mountainous interior parts of the island, and lowest near the southwestern coastal...

Oki, Delwyn S.; Brasher, Anne M.D.
Environmental Setting and the Effects of Natural and Human-Related Factors on Water Quality and Aquatic Biota, Oahu, Hawaii; 2003; WRI; 2003-4156; Oki, Delwyn S.; Brasher, Anne M. D.

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Year Published: 2003

Ground-Water Quality and its Relation to Land Use on Oahu, Hawaii, 2000-01

Water quality in the main drinking-water source aquifers of Oahu was assessed by a one-time sampling of untreated ground water from 30 public-supply wells and 15 monitoring wells. The 384 square-mile study area, which includes urban Honolulu and large tracts of forested, agricultural, and suburban residential lands in central Oahu, accounts for 93...

Hunt, Charles D.
Ground-Water Quality and its Relation to Land Use on Oahu, Hawaii, 2000-01; 2003; WRI; 2003-4305; Hunt, Charles D., Jr.

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Year Published: 2003

Land Use on the Island of Oahu, Hawaii, 1998

A hierarchical land-use classification system for Hawaii was developed, and land use on the island of Oahu was mapped. The land-use classification system emphasizes agriculture, developed (urban), and barren/mining uses. Areas with other land uses (conservation, forest reserve, natural areas, wetlands, water, and barren [sand, rock, or soil]...

Klasner, Frederick L.; Mikami, Clinton D.
Land Use on the Island of Oahu, Hawaii, 1998; 2003; WRI; 2002-4301; Klasner, Frederick L.; Mikami, Clinton D.

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Year Published: 2003

Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2002 to June 30, 2003

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 was collected at two sites, continuous streamflow data at three sites, and...

Young, Stacie T.M.; Ball, Marcael T.J.
Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2002 to June 30, 2003; 2003; OFR; 2003-331; Young, Stacie T. M.; Ball, Marcael T. J.

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Year Published: 2003

Surface Water in Hawaii

Surface water in Hawaii is a valued resource as well as a potential threat to human lives and property. The surface-water resources of Hawaii are of significant economic, ecologic, cultural, and aesthetic importance. Streams supply more than 50 percent of the irrigation water in Hawaii, and although streams supply only a few percent of the...

Oki, Delwyn S.
Surface Water in Hawaii; 2003; FS; 045-03; Oki, Delwyn S.

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Year Published: 2002

Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2001 to June 30, 2002

The State of Hawaii Department of Transportation Stormwater Monitoring Program was implemented on January 1, 2001. The program includes the collection of rainfall, streamflow, and water-quality data at selected sites in the Halawa Stream drainage basin. Rainfall data were collected at two sites, and streamflow data were collected at 3 sites for...

Presley, Todd K.
Rainfall, Streamflow, and Water-Quality Data During Stormwater Monitoring, Halawa Stream Drainage Basin, Oahu, Hawaii, July 1, 2001 to June 30, 2002; 2002; OFR; 2002-319; Presley, Todd K.

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Year Published: 2002

Reassessment of Ground-Water Recharge and Simulated Ground-Water Availability for the Hawi Area of North Kohala, Hawaii

An estimate of ground-water availability in the Hawi area of north Kohala, Hawaii, is needed to determine whether ground-water resources are adequate to meet future demand within the area and other areas to the south. For the Hawi area, estimated average annual recharge from infiltration of rainfall, fog drip, and irrigation is 37.5 million...

Oki, Delwyn S.
Reassessment of Ground-Water Recharge and Simulated Ground-Water Availability for the Hawi Area of North Kohala, Hawaii; 2002; WRI; 2002-4006; Oki, Delwyn S.

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Year Published: 2002

Streamflow and Erosion Response to Prolonged Intense Rainfall of November 1-2, 2000, Island of Hawaii, Hawaii

A combination of several meteorologic and topographic factors produced extreme rainfall over the eastern part of the island of Hawaii on November 1-2, 2000. Storm rainfall was concentrated in two distinct areas, the Waiakea and Kapapala areas, where maximum rainfall totals of 32.47 and 38.97 inches were recorded. Resultant flooding caused damages...

Fontaine, Richard A.; Hill, Barry R.
Streamflow and Erosion Response to Prolonged Intense Rainfall of November 1-2, 2000, Island of Hawaii, Hawaii; 2002; WRI; 2002-4117; Fontaine, Richard A.; Hill, Barry R.

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Year Published: 2002

Numerical Simulation of Ground-Water Withdrawals in the Southern Lihue Basin, Kauai, Hawaii

Numerical simulations indicate that ground-water withdrawals from the Hanamaulu and Puhi areas of the southern Lihue Basin will result in a decline in water levels and reductions in base flows of streams near proposed new water-supply wells. Most of the changes will be attained within 10 to 20 years of the start of pumping. Except for areas such...

Izuka, Scot K.; Oki, Delwyn S.
Numerical Simulation of Ground-Water Withdrawals in the Southern Lihue Basin, Kauai, Hawaii; 2002; WRI; 2001-4200; Izuka, Scot K.; Oki, Delwyn S.

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Year Published: 2002

Whole-rock and glass major-element geochemistry of Kilauea Volcano, Hawaii, near-vent eruptive products: September 1994 through September 2001

This report presents major-element geochemical data for glasses and whole-rock aliquots among 523 lava samples collected near the vent on Kilauea's east rift zone between September 1994 and October 2001. Information on sample collection, analysis techniques and analytical standard reproducibility are presented as a PDF file, which also includes a...

Thornber, Carl R.; Sherrod, David R.; Siems, David F.; Heliker, Christina C.; Meeker, Gregory P.; Oscarson, Robert L.; Kauahikaua, James P.
Whole-rock and glass major-element geochemistry of Kilauea Volcano, Hawaii, near-vent eruptive products: September 1994 through September 2001; 2002; OFR; 2002-17; Thornber, Carl R.; Sherrod, David R.; Siems, David F.; Heliker, Christina C.; Meeker, Gregory P.; Oscarson, Robert L.; Kauahikaua, James P.

Filter Total Items: 1,463
August 9, 2018

Lava Entering Ocean Near Isaac Hale Beach Park

Lava continues to enter the ocean near the Isaac Hale Beach Park on Kīlauea Volcano's lower East Rift Zone. Although lava output from fissure 8 remains low, the ocean entry was still active during HVO's helicopter overflight on August 9, 2018. Numerous small streams of lava were oozing into the ocean near Ahalanui, creating weak plumes of laze. The southern flow margin

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New outcrops make good geology
August 6, 2018

New outcrops make good geology

This aerial view of the western part of Kīlauea Volcano's caldera was taken on August 6, 2018. The down-dropped block is faulted about 120 m (400 feet) below the caldera floor. Many 19th-century lava flows are exposed in the fault scarps. Halema‘uma‘u (not visible) is to the left of this photo.

August 6, 2018

Overflight of Kīlauea Summit

Between mid-May and early August, 2018, the depth of Halema‘uma‘u more than tripled and its diameter more than doubled as magma from Kīlauea's shallow summit reservoir moved into the lower East Rift Zone. Evidence of subsidence is visible in this video, taken during an early morning helicopter overflight on August 6, 2018. Cracks and down-dropped blocks of the caldera 

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August 6, 2018

Lava Fountaining at Fissure 8

During this morning's overflight, HVO geologists observed low levels of lava fountaining within the fissure 8 spatter cone and crusted lava in the spillway and channel downstream. The significance of this change is not yet clear. Eruptions can wax and wane or pause for days to weeks before returning to high levels of lava discharge. New outbreaks in the area of the active 

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Hot, molten lava flows slowly into the ocean, and the temperature difference between lava and water is creating steam.
August 5, 2018

Viscous lava hits ocean water

A viscous pāhoehoe flow from Kilauea Volcano, Hawaiʻi , entering the ocean near Isaac Hale Beach Park on the morning of August 5, 2018.

August 3, 2018

Pāhoehoe Breakout

This lava, erupted from fissure 8 on Kīlauea Volcano's lower East Rift Zone, shows classic pāhoehoe behavior. Exposed to the air, the surface of the flow chills to form a thin crust that can be stretched or broken apart, forming pieces of crust that are "subducted" back into the molten interior. The main sound is wind noise, but crackles can also be heard as flakes of

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fissures were characterized by low eruption rates
July 29, 2018

fissures were characterized by low eruption rates

During the first two weeks of Kīlauea Volcano's 2018 lower East Rift Zone eruption, fissures were characterized by low eruption rates and small flows. This was because the erupted lava originated from pockets of cooler, less fluid magma stored in the rift zone. Later fissures erupted hotter, more fluid magma, resulting in higher eruption rates and large, fast-moving lava

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Feral pigs approach out of the forest, Hilo Hawaii.
July 27, 2018

Feral pigs approach the road next to a forested area in Hilo, Hawaii

A group of feral pigs leaves the forest and approaches the photographer at the side of the road. Many parts of Hilo and Hawaii Island are experiencing increased interaction with feral wildlife.

July 24, 2018

Collapse at Kīlauea (July 24, 2018)

A collapse event occurred at the summit of Kīlauea this morning (July 24, 2018) at 6:41 a.m. HST, releasing energy equivalent to a magnitude-5.3 earthquake, which is similar to that released by previous collapse events. In this video, watch as today's event unfolds from the perspective of HVO's live-stream camera. At 6:41:08 (time stamp at upper left), a small tree along

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July 21, 2018

Ocean Entry of Lava Near Ahalanui

During HVO's early morning helicopter overflight along the coastline, orange streams of lava were entering the ocean in the vicinity of Ahalanui. Strong trade winds were pushing the white laze plumes inland.

July 14, 2018

July 14, 2018, Kīlauea fissure 8 video captured by UAS

In this July 14, 2018, video captured by the UAS (Unmanned Aircraft Systems) team, lava was erupting from within the 120-foot-high fissure 8 cinder cone built of chilled lava fragments. Lava emerging from the cone was traveling about 13-16 miles per hour, flowing freely over a small set of cascades (rapids) and into a perched channel that was as much as 50 feet above the

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July 13, 2018

Kīlauea Volcano's summit (DEM)

Since early May 2018, the floor of Halema‘uma‘u Crater has dropped 450 m (about 1480 ft). Extensive cracking and faulting around the crater, along with inward slumping of the crater rim, has more than doubled its diameter. Like a balloon slowly losing air, subsidence occurs because magma in Kīlauea's shallow summit reservoir is moving into the East Rift Zone more rapidly

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Filter Total Items: 1,438
a tiltmeter is ready for installation
September 27, 2018

The USGS Hawaiian Volcano Observatory (HVO) uses a diverse set of instruments to monitor active volcanoes in Hawaii. These include seismometers, gas sensors, Global Positioning System (GPS) stations, and webcams. Each provides a unique type of data critical to understanding volcanic systems.

thumbnail image of Preliminary summary of Kīlauea Volcano’s 2018 lower East Rift Zone eruption and summit collapse
September 27, 2018

Overview of Kīlauea Volcano's activity from April 30 through September 22, 2018.

Thinly bedded Kīlauea explosion deposits
September 20, 2018

The limited collapse of the inner part of Kīlauea Volcano's caldera this summer fell well short of the larger summit-wide collapses that occurred in the past. How many such limited collapses can we recognize at Kīlauea before written records were kept? The answer is none.

seismologists install a nodal geophone on Kīlauea's lower East Rift Zone
September 13, 2018

Kīlauea Volcano's 2018 lower East Rift Zone eruption and summit collapse provided a rare opportunity to study dynamic eruptive processes beneath and at the surface of the volcano.

lava is rapidly advancing through communities
September 6, 2018

In 1902, Thomas A. Jaggar, a geologist and founder of the Hawaiian Volcano Observatory (HVO), visited the scene of one of the most deadly volcanic disasters in modern history: Mount Pelee on the Caribbean Island of Martinique.

Before and after views of a water fall.  First shows light flow of water over the falls, the second shows heavy flow.
August 24, 2018

Editor’s note: This article will be updated online with more information on the USGS response to Hurricane Lane as it becomes available.

50,000 tons of sulfur dioxide gas per day
August 23, 2018

Many Island of Hawai‘i residents are familiar with the volcanic air pollution known as "vog." The main culprit in the formation of vog is sulfur dioxide gas (SO2) released from Kīlauea's eruptions (see vog.ivhhn.org/what-vog for more information).

Nighttime scene from shipboard of lava entering the Pacific Ocean
August 16, 2018

The visible part of Kīlauea from the summit to the Lower East Rift Zone (LERZ) makes up only a small portion of the total volcano. Much of Kīlauea lies beneath the sea, including the Puna ridge to the east, and the south flank extending offshore beyond the southern coastline.

visibly active lava on Kīlauea Volcano's lower East Rift Zone
August 9, 2018

Since the morning of August 4, 2018, activity at Kīlauea Volcano's summit and its lower East Rift Zone (LERZ) has diminished dramatically—and the slowdown continues.

active lava channel on Kīlauea Volcano's lower East Rift Zone
August 2, 2018

"How long will it last?" is one of the most challenging questions asked about a volcanic eruption, including Kīlauea Volcano's current lower East Rift Zone (LERZ) eruption.

Changes at Halemaumau over time...
July 31, 2018

We've compiled some Frequently Asked Questions that address the reasons behind the current activity summit activity and what might happen over the next several months.

lava temperatures were about 2000 degrees Fahrenheit
July 27, 2018

"What's happening inside the volcano?" is just one of many questions asked about Kīlauea's ongoing lower East Rift Zone eruption. Looking at the geochemistry of erupted lava can help us answer these questions.