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
Groundwater resources of Mosteiros basin, island of Fogo, Cape Verde, West Africa
Groundwater resources in Cape Verde provide water for agriculture, industry, and human consumption. These resources are limited and susceptible to contamination. Additional groundwater resources are needed for continued agricultural development, particularly during times of drought, but increased use and (or) climatic change may have adverse effects on the quantity and quality of freshwater availa
Interpreting canopy water balance and fog screen observations: separating cloud water from wind-blown rainfall at two contrasting forest sites in Hawai'i
Oxygen, hydrogen, and helium isotopes for investigating groundwater systems of the Cape Verde Islands, West Africa
Ground-Water Availability in the Wailuku Area, Maui, Hawai'i
Analysis of an unconfined aquifer subject to asynchronous dual-tide propagation
Water Use in Wetland Kalo Cultivation in Hawai`i
Cloud water in windward and leeward mountain forests: The stable isotope signature of orographic cloud water
Estimating hydraulic properties of volcanic aquifers using constant-rate and variable-rate aquifer tests
Median and Low-Flow Characteristics for Streams under Natural and Diverted Conditions, Northeast Maui, Hawaii
Three-dimensional variable-density flow simulation of a coastal aquifer in southern Oahu, Hawaii, USA
Effects of Surface-Water Diversions on Habitat Availability for Native Macrofauna, Northeast Maui, Hawaii
A thick lens of fresh groundwater in the southern Lihue Basin, Kauai, Hawaii, USA
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Groundwater resources of Mosteiros basin, island of Fogo, Cape Verde, West Africa
Groundwater resources in Cape Verde provide water for agriculture, industry, and human consumption. These resources are limited and susceptible to contamination. Additional groundwater resources are needed for continued agricultural development, particularly during times of drought, but increased use and (or) climatic change may have adverse effects on the quantity and quality of freshwater availa
AuthorsVictor M. Heilweil, Stephen B. Gingerich, Niel Plummer, Ingrid M. VerstraetenInterpreting canopy water balance and fog screen observations: separating cloud water from wind-blown rainfall at two contrasting forest sites in Hawai'i
No abstract available.AuthorsThomas W. Giambelluca, J. K. DeLay, M.A. Nullet, Martha A. Scholl, Stephen B. GingerichOxygen, hydrogen, and helium isotopes for investigating groundwater systems of the Cape Verde Islands, West Africa
Stable isotopes (??18O, ??2H), tritium (3H), and helium isotopes (3He, 4He) were used for evaluating groundwater recharge sources, flow paths, and residence times of three watersheds in the Cape Verde Islands (West Africa). Stable isotopes indicate the predominance of high-elevation precipitation that undergoes little evaporation prior to groundwater recharge. In contrast to other active oceanic hAuthorsV.M. Heilweil, K.D. Solomon, S. B. Gingerich, Ingrid M. VerstraetenGround-Water Availability in the Wailuku Area, Maui, Hawai'i
Most of the public water supply in Maui, Hawai'i, is from a freshwater lens in the Wailuku area of the island. Because of population growth, ground-water withdrawals from wells in this area increased from less than 10 Mgal/d during 1970 to about 23 Mgal/d during 2006. In response to increased withdrawals from the freshwater lens in the Wailuku area, water levels declined, the transition zone betweAuthorsStephen B. GingerichAnalysis of an unconfined aquifer subject to asynchronous dual-tide propagation
Most published solutions for aquifer responses to ocean tides focus on the one-sided attenuation of the signal as it propagates inland. However, island aquifers experience periodic forcing from the entire coast, which can lead to integrated effects of different tidal signals, especially on narrow high-permeability islands. In general, studies disregard a potential time lag as the tidal wave sweepsAuthorsK. Rotzoll, A. I. El-Kadi, S. B. GingerichWater 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 level. To ensure that flow and temperature data coAuthorsStephen B. Gingerich, Chiu W. Yeung, Tracy-Joy N. Ibarra, John A. EngottCloud water in windward and leeward mountain forests: The stable isotope signature of orographic cloud water
Cloud water can be a significant hydrologic input to mountain forests. Because it is a precipitation source that is vulnerable to climate change, it is important to quantify amounts of cloud water input at watershed and regional scales. During this study, cloud water and rain samples were collected monthly for 2 years at sites on windward and leeward East Maui. The difference in isotopic compositiAuthorsM. A. Scholl, T. W. Giambelluca, S. B. Gingerich, M.A. Nullet, L.L. LoopeEstimating hydraulic properties of volcanic aquifers using constant-rate and variable-rate aquifer tests
In recent years the ground-water demand of the population of the island of Maui, Hawaii, has significantly increased. To ensure prudent management of the ground-water resources, an improved understanding of ground-water flow systems is needed. At present, large-scale estimations of aquifer properties are lacking for Maui. Seven analytical methods using constant-rate and variable-rate withdrawals fAuthorsK. Rotzoll, A. I. El-Kadi, S. B. GingerichMedian and Low-Flow Characteristics for Streams under Natural and Diverted Conditions, Northeast Maui, Hawaii
Flow-duration statistics under natural (undiverted) and diverted flow conditions were estimated for gaged and ungaged sites on 21 streams in northeast Maui, Hawaii. The estimates were made using the optimal combination of continuous-record gaging-station data, low-flow measurements, and values determined from regression equations developed as part of this study. Estimated 50- and 95-percent flow dAuthorsStephen B. GingerichThree-dimensional variable-density flow simulation of a coastal aquifer in southern Oahu, Hawaii, USA
Three-dimensional modeling of groundwater flow and solute transport in the Pearl Harbor aquifer, southern Oahu, Hawaii, shows that the readjustment of the freshwater–saltwater transition zone takes a long time following changes in pumping, irrigation, or recharge in the aquifer system. It takes about 50 years for the transition zone to move 90% of the distance to its new steady position. Further,AuthorsS. B. Gingerich, C.I. VossEffects of Surface-Water Diversions on Habitat Availability for Native Macrofauna, Northeast Maui, Hawaii
Effects of surface-water diversions on habitat availability for native stream fauna (fish, shrimp, and snails) are described for 21 streams in northeast Maui, Hawaii. Five streams (Waikamoi, Honomanu, Wailuanui, Kopiliula, and Hanawi Streams) were chosen as representative streams for intensive study. On each of the five streams, three representative reaches were selected: (1) immediately upstreamAuthorsStephen B. Gingerich, Reuben H. WolffA thick lens of fresh groundwater in the southern Lihue Basin, Kauai, Hawaii, USA
A thick lens of fresh groundwater exists in a large region of low permeability in the southern Lihue Basin, Kauai, Hawaii, USA. The conventional conceptual model for groundwater occurrence in Hawaii and other shield-volcano islands does not account for such a thick freshwater lens. In the conventional conceptual model, the lava-flow accumulations of which most shield volcanoes are built form largeAuthorsS. K. Izuka, S. B. Gingerich - News