I have worked as a hydrologist with USGS Washington Water Science Center in Tacoma since 1983, serving as a staff scientist, groundwater technical specialist, and most recently as the Associate Director. I earned a BS in Watershed Science from Colorado State University and a MS in Forest Hydrology from Pennsylvania State University. Over the past 30+ years, I have conducted a wide range of hydrologic investigations in the Pacific Northwest addressing urbanization and rainfall-runoff processes, groundwater resources and contaminants, water availability, and interdisciplinary Puget Sound ecosystem science. I have authored and coauthored 30+ technical reports and journal articles. As Associate Director for Hydrologic Studies, I currently manage a team of about 35 scientists and technicians who conduct basic and problem-oriented research concerning the hydrology, geomorphology, and aquatic ecology of Washington State and the beyond. Beyond USGS, I serve on the Washington State Water Supply Availability Committee, the Steering Committee of the Puget Sound Ecosystem Monitoring Program, and co-chair of the PSEMP Freshwater Workgroup. I am a Licensed Geologist and Hydrogeologist in the State of Washington, and am a long-time member of the American Geophysical Union.
Science and Products
Analysis of groundwater response to tidal fluctuations, Site 10 Naval Magazine Indian Island, Port Hadlock, Washington
Site 10 at Naval Magazine Indian Island is an approximately 3.7-acre inactive landfill. The site was used as the primary landfill for the island from about 1945 until the mid-1970s, receiving paints, batteries, trash, and materials. In a memorandum to Washington State Department of Ecology, Naval Facilities Engineering Command Northwest (NAVFAC NW...Opatz, Chad C.; Dinicola, Richard S.
Tidal flushing of mercury from the Bremerton Naval Complex through the PSNS015 stormwater drain system to Sinclair Inlet, Kitsap County, Washington, 2011 -12
The sediments of Sinclair Inlet, in Puget Sound, Washington, have elevated levels of contaminants including mercury. The Bremerton Naval Complex is adjacent to Sinclair Inlet, and has known areas of historical soil mercury contamination. The U.S. Geological Survey, in cooperation with the U.S. Navy, has been investigating the potential for mercury...Conn, Kathleen E.; Paulson, Anthony J.; Dinicola, Richard S.; DeWild, John F.
Analysis of groundwater response to tidal fluctuations, Operable Unit 2, Area 8, Naval Base Kitsap, Keyport, Washington
Operable Unit 2, Area 8, at Naval Base Kitsap, Keyport is the site of a former chrome-plating facility that released metals (primarily chromium and cadmium), chlorinated volatile organic compounds, and petroleum compounds into the local environment. To ensure long-term protectiveness, as stipulated in the Fourth Five-Year Review for the site,...Opatz, Chad C.; Dinicola, Richard S.
Tracking riverborne sediment and contaminants in Commencement Bay, Washington, using geochemical signatures
Large rivers carry terrestrial sediment, contaminants, and other materials to the coastal zone where they can affect marine biogeochemical cycles and ecosystems. This U.S. Geological Survey study combined river and marine sediment geochemistry and organic contaminant analyses to identify riverborne sediment and associated contaminants at shoreline...Takesue, Renee K.; Conn, Kathleen E.; Dinicola, Richard S.
Continuous-flow centrifugation to collect suspended sediment for chemical analysis
Recent advances in suspended-sediment monitoring tools and surrogate technologies have greatly improved the ability to quantify suspended-sediment concentrations and to estimate daily, seasonal, and annual suspended-sediment fluxes from rivers to coastal waters. However, little is known about the chemical composition of suspended sediment, and how...Conn, Kathleen E.; Dinicola, Richard S.; Black, Robert W.; Cox, Stephen E.; Sheibley, Richard W.; Foreman, James R.; Senter, Craig A.; Peterson, Norman T.
Eelgrass habitat near Liberty Bay: Chapter 5
Seagrasses are a widespread type of marine flowering plants that grow in nearshore intertidal and subtidal zones. Seagrass beds are ecologically important because they affect physical, biological, and chemical characteristics of nearshore habitat, and they are sensitive to changes in coastal water quality (Stevenson and others, 1993; Koch, 2001;...Takesue, Renee K.; Dinicola, Richard S.
Sources and sinks of filtered total mercury and concentrations of total mercury of solids and of filtered methylmercury, Sinclair Inlet, Kitsap County, Washington, 2007-10
The majority of filtered total mercury in the marine water of Sinclair Inlet originates from salt water flowing from Puget Sound. About 420 grams of filtered total mercury are added to Sinclair Inlet each year from atmospheric, terrestrial, and sedimentary sources, which has increased filtered total mercury concentrations in Sinclair Inlet (0.33...Paulson, Anthony J.; Dinicola, Richard S.; Noble, Marlene A.; Wagner, Richard J.; Huffman, Raegan L.; Moran, Patrick W.; DeWild, John F.
Biodegradation of chloroethene compounds in groundwater at Operable Unit 1, Naval Undersea Warfare Center, Division Keyport, Washington, 1999-2010
The U.S. Geological Survey evaluated the biodegradation of chloroethene compounds in groundwater beneath the former landfill at Operable Unit 1 (OU 1) of the U.S. Naval Undersea Warfare Center (NUWC), Division Keyport. The predominant contaminants in groundwater are the chloroethene compounds trichloroethene, cis-1,2-dichloroethene, and vinyl...Dinicola, R.S.; Huffman, R.L.
Mercury species and other selected constituent concentrations in water, sediment, and biota of Sinclair Inlet, Kitsap County, Washington, 2007-10
This report presents data collected for two U.S. Geological Survey field sampling projects related to mercury (Hg) in Sinclair Inlet: (1) the Watersheds Sources Project that evaluated the sources of mercury to Sinclair Inlet during December 2007 to March 2010, and (2) the Methylation and Bioaccumulation Project, a comprehensive examination of...Huffman, R.L.; Wagner, R.J.; Toft, J.; Cordell, J.; DeWild, J.F.; Dinicola, R.S.; Aiken, G.R.; Krabbenhoft, D.P.; Marvin-DiPasquale, M.; Stewart, A.R.; Moran, P.W.; Paulson, A.J.
Groundwater geochemical and selected volatile organic compound data, Operable Unit 1, Naval Undersea Warfare Center, Division Keyport, Washington, June 2009
Previous investigations indicate that natural attenuation and biodegradation of chlorinated volatile organic compounds (VOCs) are substantial in groundwater beneath the 9-acre former landfill at Operable Unit 1 (OU 1), Naval Undersea Warfare Center, Division Keyport, Washington. Phytoremediation combined with ongoing natural attenuation processes...Huffman, R.L.; Dinicola, R.S.
Sediment load from major rivers into Puget Sound and its adjacent waters
Each year, an estimated load of 6.5 million tons of sediment is transported by rivers to Puget Sound and its adjacent waters—enough to cover a football field to the height of six Space Needles. This estimated load is highly uncertain because sediment studies and available sediment-load data are sparse and historically limited to specific...Czuba, Jonathan A.; Magirl, Christopher S.; Czuba, Christiana R.; Grossman, Eric E.; Curran, Christopher A.; Gendaszek, Andrew S.; Dinicola, Richard S.
Puget Sound Shorelines and the Impacts of Armoring-Proceedings of a State of the Science Workshop, May 2009
The widespread extent and continued construction of seawalls and bulkheads on Puget Sound's beaches has emerged as a significant issue in shoreline management and coastal restoration in the region. Concerns about the impacts of shoreline armoring and managing the potential risks to coastal property are in many ways similar to those in other places...Shipman, Hugh; Dethier, Megan N.; Gelfenbaum, Guy R.; Fresh, Kurt L.; Dinicola, Richard S.