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USGS Staff Profile:
'@context': https://schema.org '@type': Person affiliation: [] description: - '@type': TextObject abstract: Research Hydrologist Emeritus with the Water Resources Mission Area additionalType: short description - '@type': TextObject abstract: Robert M Hirsch is a Research Hydrologist Emeritus for the USGS Water Resources Mission Area. additionalType: staff profile page introductory statement - '@type': TextObject abstract: "My main interest is improving the analysis of hydrologic data, with\ \ a focus on the topic of trends in streamflow and trends in surface water quality.\ \ My research on this has resulted in the development of the EGRET software\ \ (Exploration and Graphics for RivEr Trends) written in R and available freely\ \ online.The focus of my research is the description and understanding of long-term\ \ variability and change in surface-water quality and streamflow. I develop\ \ and apply new statistical tools to help characterize these changes to gain\ \ the best possible understanding of the nature of the change and its implications\ \ from a policy perspective (related to water quality improvement, flood hazard\ \ mitigation, water supply planning). This work has resulted in the development\ \ of the statistical method Weighted Regressions on Time, Discharge, and Season\ \ (WRTDS), which I have applied to the study of water quality trends in a variety\ \ of watersheds including Chesapeake Bay, the Mississippi River, Lake Erie,\ \ and Lake Champlain. This technique is a central feature of the EGRET R package.\ \ That package is designed to be a \u201Ctoolbox\u201D for analysis of daily\ \ streamflow data and surface water quality data.My other major recent contribution\ \ is the publication of \"Statistical Methods in Water Resources\" the 2020\ \ edition published as USGS Techniques and Methods (tm4A3). In addition to the\ \ pdf and the printed book, the text has on-line resources which include all\ \ of the data sets used as examples in the book, all of the R code used in the\ \ analysis of those data, and all of the R code used to produce the graphics\ \ in the book.I hold a B.A. in Geology from Earlham College, an M.S. in Geology\ \ from the University of Washington, and a Ph.D. in Geography and Environmental\ \ Engineering at the Johns Hopkins University. I began my USGS career in 1976\ \ and conducted research on water supply, water quality, pollutant transport,\ \ and flood frequency analysis. In 1993-1994 I was Acting Director of the USGS,\ \ and from 1994-2008 I was the Chief Hydrologist of the USGS. In 2008 I returned\ \ to research and since that time I have focused efforts on describing long-term\ \ changes in streamflow and water quality. I retired from the USGS in 2018 but\ \ continue to collaborate with colleagues inside and outside the USGS. I am\ \ a member of the Water Science and Technology Board of the NASEM and have served\ \ on four expert committees of that Board." additionalType: personal statement email: rhirsch@usgs.gov hasCredential: [] hasOccupation: - '@type': OrganizationalRole affiliatedOrganization: '@type': Organization name: Water Resources Mission Area url: https://www.usgs.gov/mission-areas/water-resources roleName: Research Hydrologist Emeritus startDate: '2024-05-12T15:39:05.687580' identifier: - '@type': PropertyValue propertyID: GeoKB value: https://geokb.wikibase.cloud/entity/Q46737 - '@type': PropertyValue propertyID: ORCID value: 0000-0002-4534-075X jobTitle: Research Hydrologist Emeritus knowsAbout: - '@type': Thing additionalType: self-claimed expertise name: droughts - '@type': Thing additionalType: self-claimed expertise name: floods - '@type': Thing additionalType: self-claimed expertise name: streamflow - '@type': Thing additionalType: self-claimed expertise name: surface water (non-marine) - '@type': Thing additionalType: self-claimed expertise name: surface water quality - '@type': Thing additionalType: self-claimed expertise name: statistics memberOf: '@type': OrganizationalRole member: '@type': Organization name: U.S. Geological Survey name: staff member startDate: '2024-05-12T15:39:05.684900' name: Robert M Hirsch url: https://www.usgs.gov/staff-profiles/robert-m-hirsch
