David L Blodgett

Science and Products

• Publications
  Filter Total Items: 16

  Publication Type (field_pub_type)

  TypeArticleBookBook ChapterConference PaperNewsletterOtherReportThesis

  Release Date (field_release_date)

  Year20232022202120202019201820172016201520142013201220112010200920082007200620052004200320022001200019991998199719961995

  Label

  May 22, 2023

  Generating a reference flow network with improved connectivity to support durable data integration and reproducibility in the coterminous US

  This report presents a reference flow network for the conterminous United States that is built from the best available information from the U.S. Geological Survey, the National Oceanic and Atmospheric Administration National Weather Service, and the U.S. Environmental Protection Agency. The work is intended to support durable data integration and reproducibility. Originating from the National Hydr

  Authors

  David L. Blodgett, J. Michael Johnson, Andrew R. Bock

  By

  Water Resources Mission Area

  March 6, 2023

  Hydrologic modeling and river corridor applications of HY_Features concepts

  The WaterML2: Part 3 - Surface Hydrology Features (HY_Features) Conceptual Model was published by OGC in 2018. This report documents the use of HY_Features concepts in support of two key tasks: (1) local to continental hydrologic modeling; and (2) referencing river corridor data to hydrographic networks. The presented use cases are applicable in hydroscience research and assessments, water resourc

  Authors

  David L. Blodgett, J. Michael Johnson, Andrew R. Bock, Jessica Z. LeRoy, Martin R Wernimont

  By

  Water Resources Mission Area

  November 13, 2020

  Mainstems: A logical data model implementing mainstem and drainage basin feature types based on WaterML2 Part 3: HY Features concepts

  The Mainstems data model implements the catchment and flowpath concepts from WaterML2 Part 3: Surface Hydrology Features (HY_Features) for persistent, cross-scale, identification of hydrologic features. The data model itself provides a focused and lightweight method to describe hydrologic networks with minimum but sufficient information. The design is intended to provide a model for data integrati

  Authors

  David L. Blodgett, J. Micheal Johnson, Mark Sondheim, Michael Wieczorek, Nels Frazier

  By

  Water Resources Mission Area

  March 2, 2020

  USGS-Water Resources Mission Area progress toward an internet of water

  No abstract available.

  Authors

  David L. Blodgett, Emily K. Read

  By

  Water Resources Mission Area

  September 12, 2018

  Continuing progress toward a national assessment of water availability and use

  Executive SummaryThe Omnibus Public Land Management Act of 2009 (Public Law 111—11) was passed into law on March 30, 2009. Subtitle F, also known as the SECURE Water Act, calls for the establishment of a “national water availability and use assessment program” within the U.S. Geological Survey (USGS). The USGS issued the first report on the program in 2013. Program progress over the period 2013–17

  Authors

  Eric J. Evenson, Sonya A. Jones, Nancy L. Barber, Paul M. Barlow, David L. Blodgett, Breton W. Bruce, Kyle R. Douglas-Mankin, William H. Farmer, Jeffrey M. Fischer, William B. Hughes, Jonathan Kennen, Julie E. Kiang, Molly A. Maupin, Howard W. Reeves, Gabriel B. Senay, Jennifer S. Stanton, Chad R. Wagner, Jennifer T. Wilson

  By

  Water Resources Mission Area, Water Availability and Use Science Program, Earth Resources Observation and Science (EROS) Center

  July 18, 2018

  The Future

  No abstract available.

  Authors

  David L. Blodgett, Alan H. Rea, Josh Lieberman

  April 26, 2018

  Open hydrology courseware using the United States Geological Survey’s National Water Census Data Portal

  The U.S. Geological Survey (USGS) is the primary U.S. Government agency for water data collection and dissemination. In this role, the USGS has recently created and deployed a National Water Census Data Portal (NWC-DP) which provides access to streamflow, evapotransporation, precipitation, aquatic biology and other data at the national level. Recognizing the value of these data sets for hydrologic

  Authors

  Jake Nelson, Daniel P. Ames, David L. Blodgett

  April 8, 2016

  An analysis of water data systems to inform the Open Water Data Initiative

  Improving access to data and fostering open exchange of water information is foundational to solving water resources issues. In this vein, the Department of the Interior's Assistant Secretary for Water and Science put forward the charge to undertake an Open Water Data Initiative (OWDI) that would prioritize and accelerate work toward better water data infrastructure. The goal of the OWDI is to bui

  Authors

  David L. Blodgett, Emily K. Read, Jessica M. Lucido, Tad Slawecki, Dwane Young

  By

  Groundwater and Streamflow Information Program

  January 5, 2016

  Progress on water data integration and distribution: a summary of select U.S. Geological Survey data systems

  Critical water-resources issues ranging from flood response to water scarcity make access to integrated water information, services, tools, and models essential. Since 1995 when the first water data web pages went online, the U.S. Geological Survey has been at the forefront of water data distribution and integration. Today, real-time and historical streamflow observations are available via web pag

  Authors

  David L. Blodgett, Jessica M. Lucido, James M. Kreft

  December 3, 2015

  geoknife: Reproducible web-processing of large gridded datasets

  Geoprocessing of large gridded data according to overlap with irregular landscape features is common to many large-scale ecological analyses. The geoknife R package was created to facilitate reproducible analyses of gridded datasets found on the U.S. Geological Survey Geo Data Portal web application or elsewhere, using a web-enabled workflow that eliminates the need to download and store large dat

  Authors

  Jordan S. Read, Jordan I. Walker, Alison P. Appling, David L. Blodgett, Emily K. Read, Luke A. Winslow

  March 20, 2015

  Community for Data Integration 2013 Annual Report

  The U.S. Geological Survey (USGS) conducts earth science to help address complex issues affecting society and the environment. In 2006, the USGS held the first Scientific Information Management Workshop to bring together staff from across the organization to discuss the data and information management issues affecting the integration and delivery of earth science research and investigate the use o

  Authors

  Michelle Y. Chang, Jennifer Carlino, Christopher Barnes, David L. Blodgett, Andrew R. Bock, Anthony L. Everette, Gregory L. Fernette, Lorraine E. Flint, Janice M. Gordon, David L. Govoni, Lauren E. Hay, Heather S. Henkel, Megan Hines, Sally L. Holl, Collin G. Homer, Vivian B. Hutchison, Drew A. Ignizio, Tim J. Kern, Frances L. Lightsom, Steven L. Markstrom, Michael S. O'Donnell, Jacquelyn L. Schei, Lorna A. Schmid, Kathryn M. Schoephoester, Peter N. Schweitzer, Susan K. Skagen, Daniel J. Sullivan, Colin Talbert, Meredith Pavlick Warren

  By

  Science Synthesis, Analysis and Research Program, Science Analytics and Synthesis (SAS) Program, Community for Data Integration (CDI), Science Data Management

  September 30, 2014

  Downscaled climate projections for the Southeast United States: evaluation and use for ecological applications

  Climate change is likely to have many effects on natural ecosystems in the Southeast U.S. The National Climate Assessment Southeast Technical Report (SETR) indicates that natural ecosystems in the Southeast are likely to be affected by warming temperatures, ocean acidification, sea-level rise, and changes in rainfall and evapotranspiration. To better assess these how climate changes could affect m

  Authors

  Adrienne Wootten, Kara Smith, Ryan Boyles, Adam Terando, Lydia Stefanova, Vasru Misra, Tom Smith, David L. Blodgett, Fredrick Semazzi

  By

  Ecosystems Mission Area, Climate Adaptation Science Centers
• Science
  Label

  link

  

  April 5, 2023

  Evaluation and recommendation of practices for publication of reproducible data and software releases in the USGS

  In practice, e.g., in model applications, data are rarely complete without workflow code and workflows are often treated as software that include data. This project aims to understand current practice and recommend future practices that better fit the needs of reproducible workflows and models.

  By

  Community for Data Integration (CDI)

  link

  April 5, 2023

  Evaluation and recommendation of practices for publication of reproducible data and software releases in the USGS

  In practice, e.g., in model applications, data are rarely complete without workflow code and workflows are often treated as software that include data. This project aims to understand current practice and recommend future practices that better fit the needs of reproducible workflows and models.

  Learn More

  link

  

  March 19, 2014

  Geo Data Portal

  CDI helped fund development of the USGS Geo Data Portal in 2010. In 2012, CDI funded two projects to increase the functionality of the Geo Data Portal. The Resources section below contains links to the Geo Data Portal website and deliverables from the 2012 projects. Principal Investigator : David L Blodgett Description of the Geo Data Portal from the Geo Data Portal documentation home : The USG

  By

  Community for Data Integration (CDI)

  link

  March 19, 2014

  Geo Data Portal

  CDI helped fund development of the USGS Geo Data Portal in 2010. In 2012, CDI funded two projects to increase the functionality of the Geo Data Portal. The Resources section below contains links to the Geo Data Portal website and deliverables from the 2012 projects. Principal Investigator : David L Blodgett Description of the Geo Data Portal from the Geo Data Portal documentation home : The USG

  Learn More

  link

  

  September 12, 2013

  Networking the California Climate Commons with the USGS Geo Data Portal

  The California Climate Commons (CCC) and USGS Geo Data Portal (GDP) teams have collaborated to curate and host California and Great Basin Characterization Model (BCM) results. The CCC has successfully set up a web-server and installed needed software to serve these model results using data and web service standards that are compatible with the GDP. All raw monthly data has been transferred to th

  By

  Community for Data Integration (CDI)

  link

  September 12, 2013

  Networking the California Climate Commons with the USGS Geo Data Portal

  The California Climate Commons (CCC) and USGS Geo Data Portal (GDP) teams have collaborated to curate and host California and Great Basin Characterization Model (BCM) results. The CCC has successfully set up a web-server and installed needed software to serve these model results using data and web service standards that are compatible with the GDP. All raw monthly data has been transferred to th

  Learn More

  link

  

  September 12, 2013

  Establishing the Land Use Land Cover Geo Data Portal and Supporting Data Services

  This project sought to incorporate land-use land-cover time series data into the Geo Data Portal web service infrastructure. Till now, the Geo Data Portal has been used for relatively low spatial resolution downscaled climate data. Data from the EPA’s Integrated Climate and Land Use Scenarios was incorporated into a web service compatible with the Geo Data Portal and is now hosted in the Geo Data

  By

  Community for Data Integration (CDI)

  link

  September 12, 2013

  Establishing the Land Use Land Cover Geo Data Portal and Supporting Data Services

  This project sought to incorporate land-use land-cover time series data into the Geo Data Portal web service infrastructure. Till now, the Geo Data Portal has been used for relatively low spatial resolution downscaled climate data. Data from the EPA’s Integrated Climate and Land Use Scenarios was incorporated into a web service compatible with the Geo Data Portal and is now hosted in the Geo Data

  Learn More

  link

  

  December 31, 2011

  Evaluating Downscaled Climate Models for Projecting Future Changes in the Southeast

  Climate change is likely to have many effects on natural ecosystems in the Southeast U.S. While there is information available to conservation managers and ecologists from the global climate models (GCMs), this information is at too coarse a resolution for use in vulnerability assessments and decision making. To better assess how climate change could affect multiple sectors, including ecosystems,

  By

  Climate Adaptation Science Centers

  link

  December 31, 2011

  Evaluating Downscaled Climate Models for Projecting Future Changes in the Southeast

  Climate change is likely to have many effects on natural ecosystems in the Southeast U.S. While there is information available to conservation managers and ecologists from the global climate models (GCMs), this information is at too coarse a resolution for use in vulnerability assessments and decision making. To better assess how climate change could affect multiple sectors, including ecosystems,

  Learn More
• Data
  Label

  May 19, 2023

  National Hydrologic Model v1.0 water budget components aggregated to 10 and 12-digit Hydrologic Unit Code boundaries

  This data release contains the output of the National Hydrologic Hydrologic Model (NHM) version 1.0 aggregated to twelve-digit and ten-digit Hydrologic Unit Code (HUC) boundaries contained in the NHDPlus v2.1 dataset. The data are intended to provide "local" water budgets for each HUC boundary as total aggregated streamflow across HUC boundaries is not included. The HUC boundaries are periodically

  By

  Maryland-Delaware-D.C. Water Science Center

  February 3, 2023

  Updated CONUS river network attributes based on the E2NHDPlusV2 and NWMv2.1 networks (ver. 2.0, February 2023)

  The comid field of these data can be used to join to the NHDPlus version 2 flowline comid or catchment featureid attributes. The included attributes follow the same data model as the NHDPlusV2 but include numerous updates and improvements to network connectivity. All attributes that depend on network connectivity have been recalculated. These attributes are based on the National Hydrography Datas

  By

  Water Resources Mission Area

  February 3, 2023

  Mainstem Rivers of the Conterminous United States (ver. 2.0, February 2023)

  Mainstem rivers are the backbone of a connected network of hydrologic units that cover the landscape. A mainstem connects a headwater source area to an outlet. This data release identifies the same mainstem paths in hydrographic datasets for the conterminous US. The Mainstems dataset includes cross walks between mainstem identifiers and several hydrographic datasets. These cross walk tables do no

  By

  Water Resources Mission Area

  November 15, 2022

  Twelve-digit hydrologic unit total flow and snowmelt from the National Hydrologic Model Infrastructure with the Precipitation-Runoff Modeling System, 1980-2016

  This dataset is part of the National Water Census ongoing development of best estimates of daily historical water budgets for over 100,000 hydrologic units across the United States. In this release, estimates of total flow and snowmelt for each hydrologic unit are added to the already released estimates of actual evapotranspiration, snowpack water-equivalent storage, soil moisture, recharge, strea

  By

  South Atlantic Water Science Center (SAWSC)

  September 11, 2022

  Updated CONUS river network attributes based on the E2NHDPlusV2 and NWMv2.1 networks

  The comid field of these data can be used to join to the NHDPlus version 2 flowline comid or catchment featureid attributes. The included attributes follow the same data model as the NHDPlusV2 but include numerous updates and improvements to network connectivity. All attributes that depend on network connectivity have been recalculated. These attributes are based on the National Hydrography Datas

  By

  Colorado Water Science Center

  August 16, 2022

  Mainstem Rivers of the Conterminous United States

  Mainstem rivers are the backbone of a connected network of hydrologic units that cover the landscape. A mainstem connects a headwater source area to an outlet. This data release identifies the same mainstem paths in hydrographic datasets for the conterminous US. The Mainstems dataset includes cross walks between mainstem identifiers and several hydrographic datasets. These cross walk tables do no

  By

  Water Resources Mission Area

  July 13, 2022

  Mainstem Rivers of the World based on MERIT hydrography and Natural Earth names

  Mainstem rivers are the backbone of a connected network of hydrologic units that cover the landscape. A mainstem connects a headwater source area to an outlet. This data release identifies the same mainstem paths in hydrographic datasets for the world based on the MERIT hydrography and the Natural Earth river names. Made with Natural Earth. Free vector and raster map data @ naturalearthdata.com.

  By

  Water Resources Mission Area

  May 10, 2022

  National Water Model V2.1 retrospective for selected NWIS gage locations, (1979-2020)

  This dataset contains modeled hourly streamflow in cubic meters per second at each of about eighteen thousand selected operational and water-quality stream gage locations. It was assembled from publicly available retrospective V2.1 National Water Model outputs (See NWM Retrospective source info). The streamflow variable was extracted from model output files and the data were reshaped to optimize r

  By

  Water Resources Mission Area

  July 24, 2020

  Twelve-digit hydrologic unit actual evapotranspiration and snowpack water equivalent storage from the National Hydrologic Model Infrastructure with the Precipitation-Runoff Modeling System 1980-2016

  This dataset is part of the National Water Census Water Budget Estimation and Evaluation Project's ongoing development of best estimates of daily historical water budgets for over 100,000 hydrologic units across the United States. In this release, estimates of actual evapotranspiration and snowpack water equivalent storage are added to the already released estimates of soil moisture, recharge, str

  By

  Water Resources Mission Area

  May 18, 2020

  National Water Model V2.0 retrospective for selected NWIS gage locations (1993-2018)

  This dataset contains modeled hourly streamflow in cubic meters per second at each of about eighteen thousand selected operational and water-quality stream gage locations. It was assembled from publicly available retrospective V2.0 National Water Model outputs. The streamflow variable was extracted from model output files and the data were reshaped to optimize read performance. The stream gage loc

  By

  Water Resources Mission Area
• Software
  Label

  December 6, 2022

  mainstems workflow: HU12 NHDPlusV2 NHDPlus HiRes Matching

  HU12 NHDPlusV2 NHDPlus HiRes Matching The logic encoded in this repository is documented in: Blodgett, D., Johnson, J. M., Sondheim, M., Wieczorek, M., Frazier, N. (2021). Mainstems: A logical data model implementing mainstem and drainage basin feature types based on WaterML2 Part 3: HY Features concepts. Environmental Modelling and Software, 135. https://doi.org/10.1016/j.envsoft.2020.104927 Th

  By

  Water Resources Mission Area

  May 6, 2022

  sbtools: USGS ScienceBase Tools

  Tools for interacting with U.S. Geological Survey ScienceBase https://www.sciencebase.gov interfaces. ScienceBase is a data cataloging and collaborative data management platform. Functions included for querying ScienceBase, and creating and fetching datasets.

  By

  Water Resources Mission Area

  August 21, 2019

  nhdplusTools: Tools for Accessing and Working with the NHDPlus

  Tools for traversing and working with National Hydrography Dataset Plus (NHDPlus) data. All methods implemented in 'nhdplusTools' are available in the NHDPlus documentation available from the US Environmental Protection Agency https://www.epa.gov/waterdata/basic-information.

  By

  Water Resources Mission Area

  May 20, 2019

  NetCDF-CF Geometry and Timeseries Tools for R

  Tools to create time series and geometry 'NetCDF' files.

  By

  Water Resources Mission Area
• Multimedia
  Label

  link

  3DHP v2023 Data Model and Database Contents