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
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
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