Scot K Izuka

Biography

Scot Izuka has been a hydrologist with the USGS Pacific Islands Water Science Center since 1989 and has conducted water-resources studies in Hawai‘i, American Samoa, and Micronesia. Most of his work is in island groundwater and surface-water hydrology, but he also has published research in geomorphology, climate, sedimentology, stratigraphy, geochemistry, geochronology, paleontology, and paleogeography. Scot is currently the project lead for the Hawai‘i Volcanic Aquifer Study, one of several regional groundwater-availability assessments being conducted by the USGS Water Availability and Use Science Program.

 

Education

PhD, Geology and Geophysics, University of Hawai‘i at Mānoa, 1988

MS, Geology, University of Kansas, 1983

BS, Geology and Geophysics, University of Hawai‘i at Mānoa, 1981

 

Professional Experience

Hydrologist, USGS Pacific Islands Water Science Center, Honolulu, Hawai‘i, 1989–present

Lecturer, Department of Math and Science, Kapi‘olani Community College, University of Hawai‘i, 1988–1991          

 

Publications

Izuka, S.K., 1983, Biostratinomy of ostracode assemblages from a small reef flat in Maunalua Bay, Oahu, Hawaii: Master's thesis, University of Kansas.

Izuka, S.K., and Kaesler, R.L., 1986, Biostratinomy of ostracode assemblages from a small reef flat in Maunalua Bay, Oahu, Hawaii: Journal of Paleontology, v. 60, p. 347-360.

Izuka, S.K., 1988, Relationship of magnesium and other minor elements in the tests of Cassidulina subglobosa and C. oriangulata to physical oceanic properties: Journal of Foraminiferal Research, v. 18, p. 151-157.

Izuka, S.K., 1988, The variation of magnesium concentrations in the tests of fossil and recent benthic foraminifera: PhD dissertation, University of Hawaii.

Coulbourn, W.T., Campbell, J.F., Anderson, P.N., Daugherty, P.M., Greenberg, V.A., Izuka, S.K., Lauritzen, R.A., Tsutsui, B.O., and Yan, C., 1988, Sand deposits offshore Oahu, Hawaii: Pacific Science, v. 42, no. 3-4, p. 267-299.

Izuka, S.K., 1992, Geology and stream infiltration of North Halawa Valley, Oahu, Hawaii: U.S. Geological Survey Water-Resources Investigations Report 91-4197, 21 p.

Izuka, S.K., Hill, B.R., Shade, P.J., and Tribble, G.W., 1993, Geohydrology and possible transport routes of polychlorinated biphenyls in Haiku Valley, Oahu, Hawaii: U.S. Geological Survey Water-Resources Investigations Report 92-4168, 48 p.

Izuka, S.K., and Ewart, C.J., III, 1995, Geology, streamflow, and water chemistry of the Talufofo Stream Basin, Saipan, Northern Mariana Islands: U.S. Geological Survey Water-Resources Investigations Report 95-4183, 26 p.

Izuka, S.K., 1996, Summary of ground-water and rainfall data for Tutuila and Aunuu Islands, American Samoa, for July 1984 through September 1995: U.S. Geological Survey Open-File Report, 96-116, 44 p.

Izuka, S.K., 1997, Summary of ground-water and rainfall data for Tutuila and Aunuu Islands, American Samoa, for July 1985 through September 1996: U.S. Geological Survey Open-File Report, 97-654, 44 p.

Izuka, S.K., and Gingerich, S.B., 1997a, Construction, geologic log, and aquifer tests of the Hanamaulu monitor well (state well 2-5923-08), Lihue, Kauai, Hawaii: U.S. Geological Survey Open-File Report 97-36, 23 p.

Izuka, S.K., and Gingerich, S.B., 1997b, Construction, geologic log, and aquifer tests of the Northeast Kilohana monitor well (state well 2-0124-01), Lihue, Kauai, Hawaii: U.S. Geological Survey Open-File Report 97-37, 21 p.

Izuka, S.K., and Gingerich, S.B., 1997c, Construction, geologic log, and aquifer tests of the Pukaki Reservoir monitor well (state well 2-0023-01), Lihue, Kauai, Hawaii: U.S. Geological Survey Open-File Report 97-41, 22 p.

Izuka, S.K., and Gingerich, S.B., 1997d, Construction and geologic log of the South Wailua monitor well (state well 2-0121-01), Lihue, Kauai, Hawaii: U.S. Geological Survey Open-File Report 97-38, 14 p.

Gingerich, S.B., and Izuka, S.K., 1997a, Construction, geologic log, and aquifer tests of the Northwest Kilohana monitor well (state well 2-0126-01), Lihue, Kauai, Hawaii: U.S. Geological Survey Open-File Report 97-40, 20 p.

Gingerich, S.B., and Izuka, S.K., 1997b, Construction, geologic log, and aquifer tests of the Puakukui Springs monitor well (state well 2-5626-01), Lihue, Kauai, Hawaii: U.S. Geological Survey Open-File Report 97-39, 18 p.

Gingerich, S.B., Izuka, S.K., and Presley, T.K, 1998, Ground-water resources of the coastal plain of Aunuu Island, American Samoa, 1996-97, U.S. Geological Survey Water-Resources Investigations Report 98-4029 (atlas), 2 sheets.

Izuka, S.K., and Gingerich, S.B., 1998a, Ground water in the southern Lihue Basin, Kauai, Hawaii: U.S. Geological Survey Water-Resources Investigations Report, 98-4031, 71 p.

Izuka, S.K., and Gingerich, S.B., 1998b, Estimation of the depth to the freshwater-saltwater interface from the head gradient in wells in coastal and island aquifers: Hydrogeology Journal, v. 6, p. 365-373.

Reiners, P.W., Nelson, B.K., and Izuka, S.K., 1999, Structural and petrologic evolution of the Lihue basin and eastern Kauai, Hawaii: Geological Society of America Bulletin, v. 111, p. 674-685.

Izuka, S.K., 1999, Hydrogeologic interpretations from available ground-water data, Tutuila, American Samoa: U.S. Geological Survey Water-Resources Investigations Report. 99-4064, 2 sheets (atlas format).

Izuka, S.K., and Oki, D.S., 2002, Numerical simulation of ground-water withdrawals from the southern Lihue Basin, Kauai, Hawaii: U. S. Geological Survey Water-Resources Investigations Report 01-4200, 54 p.

Izuka, S.K., and Oki, D.S., 2002, Estimating groundwater-withdrawal effects on streams in Lihue, Kauai, Hawaii: in Kenny, J.F. (ed), Proceedings: Ground-water/Surface water interactions, American Water Resources Association Summer Specialty Conference, Keystone Colorado, p. 541-546

Izuka, S.K., and Gingerich, S.B., 2003, A thick lens of fresh groundwater in the southern Lihue Basin, Kauai, Hawaii: Hydrogeology Journal v. 11, p. 240-248.

Izuka, S.K., Giambelluca, T.W., Nullet, M.A., and Asalele, F.O., 2004, Microclimate data from an evapotranspiration station at Cape Matatula, Tutuila, American Samoa: in Schnell, R.C., Buggle, A.M., and Rosson, R.M. (eds.) Climate Monitoring and Diagnostics Laboratory Summary Report No. 27 2002-2003, p. 144-146.  

Izuka, S.K., 2005, Construction, Geology, and Aquifer Testing of the Maalo Road, Aahoaka Hill, and Upper Eleele Tank Monitor Wells, Kauai, Hawaii: U.S. Geological Survey Open-File Report 05-1159, 21 p.

Izuka, S.K., 2005, Reconnaissance of the hydrogeology of Ta‘u, American Samoa: U.S. Geological Survey Scientific Investigations Report 2004-5240, 20 p.

Izuka, S.K., Giambelluca, T.W., and Nullet, M.A., 2005, Potential evapotranspiration on Tutuila, American Samoa: U.S. Geological Survey Scientific Investigations Report 2005-5200, 40 p.

Izuka, S.K., Oki, D.S., and Chen, C., 2005, Effects of irrigation and rainfall reduction on ground-water recharge in the Lihue Basin, Kauai, Hawaii: U.S. Geological Survey Scientific Investigations Report 2005-5146, 48 p.

Izuka, S.K., 2006, Effects of irrigation, drought, and ground-water withdrawals on ground-water levels in the southern Lihue Basin, Kauai, Hawaii: U.S. Geological Survey Scientific Investigations Report 2006-5921, 44 p.

Izuka, S.K., Perreault, J.A, and Presley, T.K., 2007, Areas contributing recharge to wells in the Tafuna-Leone Plain, Tutuila, American Samoa: U.S. Geological Survey Scientific Investigations Report 2007-5167, 51 p.

Izuka, S.K., and Resig, J.M., 2008, Evidence of late Pliocene to early Pleistocene marine environments in the deep subsurface of the Lihue basin, Kauai, Hawaii: Palaios, v 23, p. 442-451. 

Izuka, S.K., Senter, C.A., and Johnson, A.G., 2009, Reconnaissance assessment of the potential for roadside dry wells to affect water quality on the Island of Hawai‘i: U.S. Geological Survey Scientific Investigations Report 2009-5249, 55 p.

Izuka, S.K., Oki, D.S., and Engott, J.A., 2010, Simple method for estimating groundwater recharge on tropical islands: Journal of Hydrology, v 387, p. 81-89.

Izuka, S.K., and Abbott, L.L., 2010, Streamflow, suspended-sediment, and soil-erosion data from Kaulana and Hakioawa Watersheds, Kaho‘olawe, Hawai‘i, 2006 to 2010: U.S. Geological Survey Open-File Report 2010-1182, 40 p.

Izuka, S.K., 2011, Potential effects of roadside dry wells on groundwater quality on the Island of Hawai‘i—assessment using numerical groundwater models: U.S. Geological Survey Scientific Investigations Report 2011-5072, 30 p.

Izuka, S.K, Perreault, J.A., Jones, T., and Kozar, K., 2011. Protocol for long term groundwater-hydrology monitoring in American Memorial Park, Commonwealth of the Northern Mariana Islands, and Kaloko-Honokohau National Historic Park, Hawaii.  Natural Resource Report NPS/PACN/NRR—2011/472. National Park Service, Fort Collins, Colorado, 242 p.

Izuka, S.K., 2012, Sources of suspended sediment in the Waikele watershed O‘ahu, Hawai‘i: U.S. Geological Survey Scientific Investigations Report 2012-5085, 28 p.

Keener, V.W., Izuka, S.K., and Anthony, S., 2012, Freshwater and Drought on Pacific Islands: in Keener, V.W., Marra, J.J., Finucane, M.L., Spooner, D., and Smith, M.H. (eds.), Climate change and Pacific Islands—Indicators and impacts. Report for the 2012 Pacific Islands Regional Climate Assessment, Washington, DC, Island Press, p. 35-64.

Keener, V.W., Hamilton, K., Izuka, S.K., Kunkel, K.E., Stevens, L.E., and Sun, L., 2013, Regional climate trends and scenarios for the U.S. National Climate Assessment, Part 8, Climate of the Pacific: National Oceanic and Atmospheric Administration Technical Report NESDIS 142-8, 44 p.

Sherrod, D.R., Izuka, S.K., and Cousens, B.L., 2015, Onset of rejuvenated-stage volcanism and the formation of Līhu‘e Basin—Kaua‘i events that occurred 3–4 million years ago: in Carey, R., Cayol, V., Poland, M., and Weis, D., (eds), Hawaiian Volcanoes—from source to surface, AGU Geophysical Monograph 208, p. 105-123.

Engott, J.A., Johnson, A.G., Bassiouni, Maoya, Izuka, S.K., and Rotzoll, Kolja, 2017, Spatially distributed groundwater recharge for 2010 land cover estimated using a water-budget model for the Island of O‘ahu, Hawai‘i (ver. 2.0, December 2017): U.S. Geological Survey Scientific Investigations Report 2015-5010, 49 p., https://doi.org/10.3133/sir20155010.

Izuka, S.K., Engott, J.A., Rotzoll, Kolja, Bassiouni, Maoya, Johnson, A.G., Miller, L.D., and Mair, Alan, 2018, Volcanic aquifers of Hawai‘i—Hydrogeology, water budgets, and conceptual models (ver. 2.0, March 2018): U.S. Geological Survey Scientific Investigations Report 2015-5164, 158 p., https://doi.org/10.3133/sir20155164.