Eric Grossman
Research Geologist with the USGS Pacific Coastal and Marine Science Center
Science and Products
Aerial imagery and structure-from-motion data products from UAS survey of the intertidal zone at Puget Creek and Dickman Mill Park, Ruston Way, Tacoma, WA, June 2019
Aerial imagery and structure-from-motion data products from UAS survey of the intertidal zone at Post Point, Bellingham Bay, WA, June 2019
Eelgrass distributions and bathymetry of the Nisqually River delta, Washington
Oceanographic measurements collected in the Stillaguamish River Delta, Port Susan, Washington, USA from March 2014 to July 2015
Topobathymetric Model of Puget Sound, Washington, 1887 to 2017
Wave observations from nearshore bottom-mounted pressure sensors in Skagit and Bellingham Bays, Washington, USA from Dec 2017 to Feb 2018
Nearshore water properties and estuary conditions along the coral reef coastline of west Hawaii Island (2010-2014)
Coral cover and health determined from seafloor photographs and diver observations, West Hawai'i, 2010-2011
Data collected in 2008-2010 to evaluate juvenile salmon and forage fish use of eelgrass on the Skagit River Delta, Washington State, USA
High-resolution bathymetry and acoustic-backscatter data collected in 2004, 2005, 2007, and 2010 in Skagit Bay, Washington
Stage, water velocity and water quality data collected in the Lower Nisqually River, McAllister Creek and tidal channels of the Nisqually River Delta, Thurston County, Washington, February 11, 2016 to September 18, 2017 (ver. 1.1, December, 2019)
Distribution and transport of Olympia oyster, Ostrea lurida, larvae in northern Puget Sound, Washington, USA
Sediment transport in a restored, river-influenced Pacific Northwest estuary
Predicting the success of future investments in coastal and estuarine ecosystem restorations is limited by scarce data quantifying sediment budgets and transport processes of prior restorations. This study provides detailed analyses of the hydrodynamics and sediment fluxes of a recently restored U.S. Pacific Northwest estuary, a 61 ha former agricultural area near the mouth of the Stillaguamish Ri
Extreme coastal water level in Washington state: Guidance to support sea level rise planning
Sediment storage and transport in the Nooksack River basin, northwestern Washington, 2006–15
Juvenile Chinook salmon and forage fish use of eelgrass habitats in a diked and channelized Puget Sound River Delta
Comparing automated classification and digitization approaches to detect change in eelgrass bed extent during restoration of a large river delta
Suspended-sediment loads in the lower Stillaguamish River, Snohomish County, Washington, 2014–15
2010-2015 Juvenile fish ecology in the Nisqually River Delta and Nisqually Reach Aquatic Reserve
Sediment load and distribution in the lower Skagit River, Skagit County, Washington
Assessing tidal marsh vulnerability to sea-level rise in the Skagit Delta
Suspended sediment delivery to Puget Sound from the lower Nisqually River, western Washington, July 2010–November 2011
Changes in habitat availability for outmigrating juvenile salmon (Oncorhychus spp.) following estuary restoration
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Filter Total Items: 23
Aerial imagery and structure-from-motion data products from UAS survey of the intertidal zone at Puget Creek and Dickman Mill Park, Ruston Way, Tacoma, WA, June 2019
An unmanned aerial system (UAS) was used to acquire high-resolution imagery of the intertidal zone at Puget Creek and Dickman Mill Park in Tacoma, Washington on June 3, 2019. This imagery was processed using structure-from-motion (SfM) photogrammetric techniques to derive high-resolution digital surface models (DSM), orthomosaic imagery, and topographic point clouds. In order to maximize the exteAerial imagery and structure-from-motion data products from UAS survey of the intertidal zone at Post Point, Bellingham Bay, WA, June 2019
An unmanned aerial system (UAS) was used to acquire high-resolution imagery of the intertidal zone at Post Point in Bellingham Bay, Washington on June 6, 2019. This imagery was processed using structure-from-motion (SfM) photogrammetric techniques to derive high-resolution digital surface models (DSM), orthomosaic imagery, and topographic point clouds. In order to maximize the extent of the subaEelgrass distributions and bathymetry of the Nisqually River delta, Washington
This data release presents eelgrass distributions and bathymetric data from repeated surveys performed on the Nisqually River delta to document interannual changes in eelgrass abundance and coastal morphology following the removal of dikes in 2009 that restored tidal processes to over 300 ha of former freshwater wetlands. Survey operations were conducted by a team of scientists from the U.S. GeoloOceanographic measurements collected in the Stillaguamish River Delta, Port Susan, Washington, USA from March 2014 to July 2015
This data release includes time-series and discrete measurements made within two breaches constructed in a former flood-control levee of a restored agricultural area in Port Susan, Washington. An area of approximately 61 ha near the mouth of the Stillaguamish River was reconnected to tidal flow via levee breaches as part of a larger restoration effort that took place in 2012. These observations weTopobathymetric Model of Puget Sound, Washington, 1887 to 2017
To support the modeling of storm-induced flooding, the USGS Coastal National Elevation Database (CoNED) Applications Project has created an integrated 1-meter topobathymetric digital elevation model (TBDEM) for Puget Sound. Puget Sound is located along the northwestern coast of Washington and is part of the Salish Sea. Puget Sound is the third largest estuary in the United States. High-resolutionWave observations from nearshore bottom-mounted pressure sensors in Skagit and Bellingham Bays, Washington, USA from Dec 2017 to Feb 2018
RBRduo pressure and temperature sensors, mounted on aluminum frames, were moored in shallow (less than 6 m) water depths in Skagit and Bellingham Bays, Washington, USA, from December 2017 to February 2018, to capture wave heights and periods. Continuous pressure fluctuations are transformed into surface-wave observations of wave heights, periods, and frequency spectra at 30-minute intervals.Nearshore water properties and estuary conditions along the coral reef coastline of west Hawaii Island (2010-2014)
Spatial and continuous time-series measurements of water properties, including temperature, salinity, pH, and dissolved oxygen, from a range of depths and distances from shore, were collected along the west coast of the Island of Hawaii. These data and associated analyses help characterize the variability of coral reef habitats, and in particular, the influence of low temperature and low salinityCoral cover and health determined from seafloor photographs and diver observations, West Hawai'i, 2010-2011
Bottom photographs and transect survey data were collected at 31 stations spanning 75 km of west Hawaii Island over the period 2010 to 2011 to examine coral community structure, coral colony size structure, and coral health. The data also establish baseline conditions and support efforts to track change in coral communities in the future. Stations were sited along a gradient in exposure to submariData collected in 2008-2010 to evaluate juvenile salmon and forage fish use of eelgrass on the Skagit River Delta, Washington State, USA
Data are abundance and body size (length) of juvenile salmon, forage fish, and other species captured with a lampara net in eelgrass and nearby unvegetated habitat on the Skagit River Delta monthly, April-September, 2008-2010, as well as vegetation status, water depth, temperature, salinity, and clarity for each fish netting event.High-resolution bathymetry and acoustic-backscatter data collected in 2004, 2005, 2007, and 2010 in Skagit Bay, Washington
This data release provides the U.S. Geological Survey (USGS) Pacific Coastal and Marine Science Center (PCMSC) 2004, 2005, 2007, and 2010 bathymetry data that was collected in Skagit Bay, Washington as well as a merged 2005-2010 bathymetry grid. Also, this data release provides the acoustic-backscatter as a merged 2005-2010 backscatter image. All bathymetry grids are provided at 1-m spatial resoluStage, water velocity and water quality data collected in the Lower Nisqually River, McAllister Creek and tidal channels of the Nisqually River Delta, Thurston County, Washington, February 11, 2016 to September 18, 2017 (ver. 1.1, December, 2019)
This data release includes time series data of stage, water velocity and water quality parameters at multiple locations in the tidally-influenced reaches of the Nisqually River and McAllister Creek, and tidal channels of the Nisqually River Delta. In total, time series data were collected at multiple sites from February 11, 2016 to March 19, 2018 during separate but generally overlapping periods o - Multimedia
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Distribution and transport of Olympia oyster, Ostrea lurida, larvae in northern Puget Sound, Washington, USA
As efforts for restoring Olympia oyster (Ostrea lurida) populations have expanded, there is an increased need to understand local factors that could influence the long-term success of these projects. To address concerns over potential limitations to recruitment at a restoration site in northern Puget Sound, Washington, USA, a study was developed to characterize physical processes governing larvalAuthorsS.K. Grossman, Eric E. Grossman, Julie S. Barber, S.K. Gamblewood, Sean C. CrosbySediment transport in a restored, river-influenced Pacific Northwest estuary
Predicting the success of future investments in coastal and estuarine ecosystem restorations is limited by scarce data quantifying sediment budgets and transport processes of prior restorations. This study provides detailed analyses of the hydrodynamics and sediment fluxes of a recently restored U.S. Pacific Northwest estuary, a 61 ha former agricultural area near the mouth of the Stillaguamish Ri
AuthorsDaniel J. Nowacki, Eric E. GrossmanExtreme coastal water level in Washington state: Guidance to support sea level rise planning
This document provides guidelines for assessing exposure to future coastal flooding during extreme coastal water level events – whether these are due to tides, surge, wave run-up, or, more likely, a combination of the three. These guidelines provide information about the current and future magnitude of extreme coastal water levels across Washington State and the underlying processes that influenceAuthorsI.M. Miller, Nathan R. vanArendonk, Eric E. GrossmanSediment storage and transport in the Nooksack River basin, northwestern Washington, 2006–15
The Nooksack River is a dynamic gravel-bedded river in northwestern Washington, draining off Mount Baker and the North Cascades into Puget Sound. Working in cooperation with the Whatcom County Flood Control Zone District, the U.S. Geological Survey studied topographic, hydrologic, and climatic data for the Nooksack River basin to document recent changes in sediment storage, long-term bed elevationAuthorsScott W. Anderson, Christopher P. Konrad, Eric E. Grossman, Christopher A. CurranJuvenile Chinook salmon and forage fish use of eelgrass habitats in a diked and channelized Puget Sound River Delta
Eelgrass Zostera marina can form extensive meadows on Puget Sound river deltas. The extent to which these meadows provide critical rearing habitat for local estuarine fishes, especially out‐migrating juvenile salmon, is not well understood. Further, delta eelgrass has been impacted by diking and river channelization with unknown consequences for fish. We sampled fish in the Skagit River delta, WasAuthorsStephen P. Rubin, Michael C. Hayes, Eric E. GrossmanComparing automated classification and digitization approaches to detect change in eelgrass bed extent during restoration of a large river delta
Native eelgrass (Zostera marina) is an important contributor to ecosystem services that supplies cover for juvenile fish, supports a variety of invertebrate prey resources for fish and waterbirds, provides substrate for herring roe consumed by numerous fish and birds, helps stabilize sediment, and sequesters organic carbon. Seagrasses are in decline globally, and monitoring changes in their growthAuthorsAnna Elizabeth Davenport, Jerry D. Davis, Isa Woo, Eric E. Grossman, Jesse B. Barham, Christopher S. Ellings, John Y. TakekawaSuspended-sediment loads in the lower Stillaguamish River, Snohomish County, Washington, 2014–15
Continuous records of discharge and turbidity at a U.S. Geological Survey (USGS) streamgage in the lower Stillaguamish River were paired with discrete measurements of suspended-sediment concentration (SSC) in order to estimate suspended-sediment loads over the water years 2014 and 2015. First, relations between turbidity and SSC were developed and used to translate the continuous turbidity recordAuthorsScott A. Anderson, Christopher A. Curran, Eric E. Grossman2010-2015 Juvenile fish ecology in the Nisqually River Delta and Nisqually Reach Aquatic Reserve
The return of tidal inundation to over 750 acres of the U. S. Fish and Wildlife Service Billy Frank Jr. Nisqually National Wildlife Refuge (NNWR) in fall of 2009 was the crowning moment in the effort to protect and restore the Nisqually Delta. The Nisqually NWR project complemented three earlier restoration projects completed by the Nisqually Indian Tribe (Tribe) on tribal property to restore overAuthorsSayre Hodgson, Christopher S. Ellings, Steve P. Rubin, Michael C. Hayes, Walker Duval, Eric E. GrossmanSediment load and distribution in the lower Skagit River, Skagit County, Washington
The Skagit River delivers about 40 percent of all fluvial sediment that enters Puget Sound, influencing flood hazards in the Skagit lowlands, critically important estuarine habitat in the delta, and some of the most diverse and productive agriculture in western Washington. A total of 175 measurements of suspended-sediment load, made routinely from 1974 to 1993, and sporadically from 2006 to 2009,AuthorsChristopher A. Curran, Eric E. Grossman, Mark C. Mastin, Raegan L. HuffmanAssessing tidal marsh vulnerability to sea-level rise in the Skagit Delta
Historical aerial photographs, from 1937 to the present, show Skagit Delta tidal marshes prograding into Skagit Bay for most of the record, but the progradation rates have been steadily declining and the marshes have begun to erode in recent decades despite the large suspended sediment load provided by the Skagit River. In an area of the delta isolated from direct riverine sediment supply by anthrAuthorsW. Gregory Hood, Eric E. Grossman, Curt VeldhuisenSuspended sediment delivery to Puget Sound from the lower Nisqually River, western Washington, July 2010–November 2011
On average, the Nisqually River delivers about 100,000 metric tons per year (t/yr) of suspended sediment to Puget Sound, western Washington, a small proportion of the estimated 1,200,000 metric tons (t) of sediment reported to flow in the upper Nisqually River that drains the glaciated, recurrently active Mount Rainier stratovolcano. Most of the upper Nisqually River sediment load is trapped in AlAuthorsChristopher A. Curran, Eric E. Grossman, Christopher S. Magirl, James R. ForemanChanges in habitat availability for outmigrating juvenile salmon (Oncorhychus spp.) following estuary restoration
The restoration of the Nisqually River Delta (Washington, U.S.A.) represents one of the largest efforts toward reestablishing the ecosystem function and resilience of modified habitat in the Puget Sound, particularly for anadromous salmonid species. The opportunity for outmigrating salmon to access and benefit from the expansion of available tidal habitat can be quantified by several physical attrAuthorsChristopher S. Ellings, Melanie J. Davis, Eric E. Grossman, Sayre Hodgson, Kelley L. Turner, Isa Woo PR, Glynnis Nakai, Jean E. Takekawa, John Y. Takekawa - News