Stephen B Gingerich
Stephen Gingerich is a research hydrologist at the USGS Oregon Water Science Center.
Stephen Gingerich has been a Research Hydrologist for the U.S. Geological Survey since 1995. He has authored over 35 scientific papers on subjects such as groundwater modeling and island hydrology. He was a Fulbright Scholar working in Japan during 2008-09. He started working for the USGS in 1990 as a student. He has worked on hydrologic studies in Oregon, Hawaii, Guam, Japan, the Marshall Islands, American Samoa, the Northern Mariana Islands, and Diego Garcia.
Education and Certifications
BS in Geosciences from the Pennsylvania State University, 1986
MS in Hydrology from the University of Hawaii at Manoa, 1992
PhD in Hydrology from the University of Hawaii at Manoa, 1995
Science and Products
Filter Total Items: 60
Deep aquifer recharge in the Columbia River Basalt Group, upper Umatilla River Basin, northeastern Oregon Deep aquifer recharge in the Columbia River Basalt Group, upper Umatilla River Basin, northeastern Oregon
Groundwater is an important component of the water resources of the upper Umatilla River Basin of northeastern Oregon. As such, understanding the capacity of the resource is vital. Past studies have estimated recharge in the study area. One recent study of the upper Umatilla River Basin indicated that about 80 percent of recharge entering the groundwater system is discharged to streams...
Authors
Esther M. Pischel, Henry M. Johnson, Stephen B. Gingerich
Tropical cyclone projections: Changing climate threats for Pacific Island defense installations Tropical cyclone projections: Changing climate threats for Pacific Island defense installations
Potential changing climate threats in the tropical and subtropical North Pacific Ocean were assessed, using coupled ocean-atmosphere and atmosphere-only general circulation models, to explore their response to projected increasing greenhouse gas emissions. Tropical cyclone occurrence, described by their frequency and intensity, near islands housing major U.S. defense installations was...
Authors
Matthew J. Widlansky, Hariharasubramanian Annamalai, Stephen B. Gingerich, Curt D. Storlazzi, John J. Marra, Kevin I. Hodges, Barry Choy, Akio Kitoh
Most atolls will be uninhabitable by the mid-21st century because of sea-level rise exacerbating wave-driven flooding Most atolls will be uninhabitable by the mid-21st century because of sea-level rise exacerbating wave-driven flooding
Sea levels are rising, with the highest rates in the tropics, where thousands of low-lying coral atoll islands are located. Most studies on the resilience of these islands to sea-level rise have projected that they will experience minimal inundation impacts until at least the end of the 21st century. However, these have not taken into account the additional hazard of wave-driven overwash...
Authors
Curt D. Storlazzi, Stephen B. Gingerich, Ap van Dongeren, Olivia M. Cheriton, Peter W. Swarzenski, Ellen Quataert, Clifford I. Voss, Donald W. Field, Hariharasubramanian Annamalai, Greg A. Piniak, Robert T. McCall
Noble gas signatures in the Island of Maui, Hawaii: Characterizing groundwater sources in fractured systems Noble gas signatures in the Island of Maui, Hawaii: Characterizing groundwater sources in fractured systems
Uneven distribution of rainfall and freshwater scarcity in populated areas in the Island of Maui, Hawaii, renders water resources management a challenge in this complex and ill-defined hydrological system. A previous study in the Galapagos Islands suggests that noble gas temperatures (NGTs) record seasonality in that fractured, rapid infiltration groundwater system rather than the...
Authors
Yi Niu, M. Clara Castro, Chris M. Hall, Stephen B. Gingerich, Martha A. Scholl, Rohit B. Warrier
Seawater-flooding events and impact on freshwater lenses of low-lying islands: Controlling factors, basic management and mitigation Seawater-flooding events and impact on freshwater lenses of low-lying islands: Controlling factors, basic management and mitigation
An unprecedented set of hydrologic observations was collected after the Dec 2008 seawater-flooding event on Roi-Namur, Kwajalein Atoll, Republic of the Marshall Islands. By two days after the seawater flooding that occurred at the beginning of dry season, the observed salinity of water withdrawn by the island’s main skimming well increased to 100% seawater concentration, but by ten days...
Authors
Stephen B. Gingerich, Clifford I. Voss, Adam G. Johnson
Observations of nearshore groundwater discharge: Kahekili Beach Park submarine springs, Maui, Hawaii Observations of nearshore groundwater discharge: Kahekili Beach Park submarine springs, Maui, Hawaii
Study region The study region encompasses the nearshore, coastal waters off west Maui, Hawaii. Here abundant groundwater—that carries with it a strong land-based fingerprint—discharges into the coastal waters and over a coral reef.Study focus Coastal groundwater discharge is a ubiquitous hydrologic feature that has been shown to impact nearshore ecosystems and material budgets. A unique...
Authors
Peter W. Swarzenski, H. Dulai, K.D. Kroeger, Christopher G. Smith, N. Dimova, C. D. Storlazzi, N.G. Prouty, S. B. Gingerich, C. R. Glenn
Climate trends and projections for Guam Climate trends and projections for Guam
The island of Guam experiences a tropical marine climate, which is warm and humid moderated by seasonal tradewinds and a wet and dry season. The dry season lasts from January to June, while the rainy months are from July to December. Annual rainfall totals 84-116 inches (2133-2946 mm), of which two-thirds fall during the rainy season. Seasonal temperatures and precipitation are also...
Authors
Stephen B. Gingerich, Victoria Keener, Melissa L. Finucane
The effects of withdrawals and drought on groundwater availability in the Northern Guam Lens Aquifer, Guam The effects of withdrawals and drought on groundwater availability in the Northern Guam Lens Aquifer, Guam
Owing to population growth, freshwater demand on Guam has increased in the past and will likely increase in the future. During the early 1970s to 2010, groundwater withdrawals from the limestone Northern Guam Lens Aquifer, the main source of freshwater on the island, tripled from about 15 to 45 million gallons per day. Because of proposed military relocation to Guam and expected...
Authors
Stephen B. Gingerich
Estimating hydraulic properties from tidal attenuation in the Northern Guam Lens Aquifer, territory of Guam, USA Estimating hydraulic properties from tidal attenuation in the Northern Guam Lens Aquifer, territory of Guam, USA
Tidal-signal attenuations are analyzed to compute hydraulic diffusivities and estimate regional hydraulic conductivities of the Northern Guam Lens Aquifer, Territory of Guam (Pacific Ocean), USA. The results indicate a significant tidal-damping effect at the coastal boundary. Hydraulic diffusivities computed using a simple analytical solution for well responses to tidal forcings near the...
Authors
Kolja Rotzoll, Stephen B. Gingerich, John W. Jenson, Aly I. El-Kadi
Groundwater availability in the Lahaina District, west Maui, Hawai'i 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 salinity of water pumped from some of...
Authors
Stephen B. Gingerich, John A. Engott
Hydrogeology of the Hawaiian islands Hydrogeology of the Hawaiian islands
Volcanic-rock aquifers are the most extensive and productive aquifers in the Hawaiian Islands. These aquifers contain different types of groundwater systems depending on the geologic setting in which they occur. The most common groundwater systems include coastal freshwater-lens systems in the dike-free flanks of the volcanoes and dike-impounded systems within the dike-intruded areas of...
Authors
Stephen B. Gingerich, Delwyn S. Oki
Canopy water balance of windward and leeward Hawaiian cloud forests on Haleakalā, Maui, Hawai'i Canopy water balance of windward and leeward Hawaiian cloud forests on Haleakalā, Maui, Hawai'i
The contribution of intercepted cloud water to precipitation at windward and leeward cloud forest sites on the slopes of Haleakalā, Maui was assessed using two approaches. Canopy water balance estimates based on meteorological monitoring were compared with interpretations of fog screen measurements collected over a 2-year period at each location. The annual incident rainfall was 973 mm...
Authors
Thomas W. Giambelluca, John K. DeLay, Michael A. Nullet, Martha A. Scholl, Stephen B. Gingerich
Science and Products
Filter Total Items: 60
Deep aquifer recharge in the Columbia River Basalt Group, upper Umatilla River Basin, northeastern Oregon Deep aquifer recharge in the Columbia River Basalt Group, upper Umatilla River Basin, northeastern Oregon
Groundwater is an important component of the water resources of the upper Umatilla River Basin of northeastern Oregon. As such, understanding the capacity of the resource is vital. Past studies have estimated recharge in the study area. One recent study of the upper Umatilla River Basin indicated that about 80 percent of recharge entering the groundwater system is discharged to streams...
Authors
Esther M. Pischel, Henry M. Johnson, Stephen B. Gingerich
Tropical cyclone projections: Changing climate threats for Pacific Island defense installations Tropical cyclone projections: Changing climate threats for Pacific Island defense installations
Potential changing climate threats in the tropical and subtropical North Pacific Ocean were assessed, using coupled ocean-atmosphere and atmosphere-only general circulation models, to explore their response to projected increasing greenhouse gas emissions. Tropical cyclone occurrence, described by their frequency and intensity, near islands housing major U.S. defense installations was...
Authors
Matthew J. Widlansky, Hariharasubramanian Annamalai, Stephen B. Gingerich, Curt D. Storlazzi, John J. Marra, Kevin I. Hodges, Barry Choy, Akio Kitoh
Most atolls will be uninhabitable by the mid-21st century because of sea-level rise exacerbating wave-driven flooding Most atolls will be uninhabitable by the mid-21st century because of sea-level rise exacerbating wave-driven flooding
Sea levels are rising, with the highest rates in the tropics, where thousands of low-lying coral atoll islands are located. Most studies on the resilience of these islands to sea-level rise have projected that they will experience minimal inundation impacts until at least the end of the 21st century. However, these have not taken into account the additional hazard of wave-driven overwash...
Authors
Curt D. Storlazzi, Stephen B. Gingerich, Ap van Dongeren, Olivia M. Cheriton, Peter W. Swarzenski, Ellen Quataert, Clifford I. Voss, Donald W. Field, Hariharasubramanian Annamalai, Greg A. Piniak, Robert T. McCall
Noble gas signatures in the Island of Maui, Hawaii: Characterizing groundwater sources in fractured systems Noble gas signatures in the Island of Maui, Hawaii: Characterizing groundwater sources in fractured systems
Uneven distribution of rainfall and freshwater scarcity in populated areas in the Island of Maui, Hawaii, renders water resources management a challenge in this complex and ill-defined hydrological system. A previous study in the Galapagos Islands suggests that noble gas temperatures (NGTs) record seasonality in that fractured, rapid infiltration groundwater system rather than the...
Authors
Yi Niu, M. Clara Castro, Chris M. Hall, Stephen B. Gingerich, Martha A. Scholl, Rohit B. Warrier
Seawater-flooding events and impact on freshwater lenses of low-lying islands: Controlling factors, basic management and mitigation Seawater-flooding events and impact on freshwater lenses of low-lying islands: Controlling factors, basic management and mitigation
An unprecedented set of hydrologic observations was collected after the Dec 2008 seawater-flooding event on Roi-Namur, Kwajalein Atoll, Republic of the Marshall Islands. By two days after the seawater flooding that occurred at the beginning of dry season, the observed salinity of water withdrawn by the island’s main skimming well increased to 100% seawater concentration, but by ten days...
Authors
Stephen B. Gingerich, Clifford I. Voss, Adam G. Johnson
Observations of nearshore groundwater discharge: Kahekili Beach Park submarine springs, Maui, Hawaii Observations of nearshore groundwater discharge: Kahekili Beach Park submarine springs, Maui, Hawaii
Study region The study region encompasses the nearshore, coastal waters off west Maui, Hawaii. Here abundant groundwater—that carries with it a strong land-based fingerprint—discharges into the coastal waters and over a coral reef.Study focus Coastal groundwater discharge is a ubiquitous hydrologic feature that has been shown to impact nearshore ecosystems and material budgets. A unique...
Authors
Peter W. Swarzenski, H. Dulai, K.D. Kroeger, Christopher G. Smith, N. Dimova, C. D. Storlazzi, N.G. Prouty, S. B. Gingerich, C. R. Glenn
Climate trends and projections for Guam Climate trends and projections for Guam
The island of Guam experiences a tropical marine climate, which is warm and humid moderated by seasonal tradewinds and a wet and dry season. The dry season lasts from January to June, while the rainy months are from July to December. Annual rainfall totals 84-116 inches (2133-2946 mm), of which two-thirds fall during the rainy season. Seasonal temperatures and precipitation are also...
Authors
Stephen B. Gingerich, Victoria Keener, Melissa L. Finucane
The effects of withdrawals and drought on groundwater availability in the Northern Guam Lens Aquifer, Guam The effects of withdrawals and drought on groundwater availability in the Northern Guam Lens Aquifer, Guam
Owing to population growth, freshwater demand on Guam has increased in the past and will likely increase in the future. During the early 1970s to 2010, groundwater withdrawals from the limestone Northern Guam Lens Aquifer, the main source of freshwater on the island, tripled from about 15 to 45 million gallons per day. Because of proposed military relocation to Guam and expected...
Authors
Stephen B. Gingerich
Estimating hydraulic properties from tidal attenuation in the Northern Guam Lens Aquifer, territory of Guam, USA Estimating hydraulic properties from tidal attenuation in the Northern Guam Lens Aquifer, territory of Guam, USA
Tidal-signal attenuations are analyzed to compute hydraulic diffusivities and estimate regional hydraulic conductivities of the Northern Guam Lens Aquifer, Territory of Guam (Pacific Ocean), USA. The results indicate a significant tidal-damping effect at the coastal boundary. Hydraulic diffusivities computed using a simple analytical solution for well responses to tidal forcings near the...
Authors
Kolja Rotzoll, Stephen B. Gingerich, John W. Jenson, Aly I. El-Kadi
Groundwater availability in the Lahaina District, west Maui, Hawai'i 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 salinity of water pumped from some of...
Authors
Stephen B. Gingerich, John A. Engott
Hydrogeology of the Hawaiian islands Hydrogeology of the Hawaiian islands
Volcanic-rock aquifers are the most extensive and productive aquifers in the Hawaiian Islands. These aquifers contain different types of groundwater systems depending on the geologic setting in which they occur. The most common groundwater systems include coastal freshwater-lens systems in the dike-free flanks of the volcanoes and dike-impounded systems within the dike-intruded areas of...
Authors
Stephen B. Gingerich, Delwyn S. Oki
Canopy water balance of windward and leeward Hawaiian cloud forests on Haleakalā, Maui, Hawai'i Canopy water balance of windward and leeward Hawaiian cloud forests on Haleakalā, Maui, Hawai'i
The contribution of intercepted cloud water to precipitation at windward and leeward cloud forest sites on the slopes of Haleakalā, Maui was assessed using two approaches. Canopy water balance estimates based on meteorological monitoring were compared with interpretations of fog screen measurements collected over a 2-year period at each location. The annual incident rainfall was 973 mm...
Authors
Thomas W. Giambelluca, John K. DeLay, Michael A. Nullet, Martha A. Scholl, Stephen B. Gingerich