Personal information

Emails & domains

Verified email domains

Other IDs

US EPA VIVO: hill.ryan

Keywords

Watershed Science, Rivers/Streams, Lakes, Modeling, Geospatial Analysis

Countries

United States

Activities

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Employment (4)

US Environmental Protection Agency: Corvallis, OR, US

2019-07-07 to present | Geospatial Aquatic Ecologist (Freshwater Ecology Branch)
Employment
Source: Self-asserted source
Ryan A. Hill

Oregon State University: Corvallis, OR, US

2018-12-01 to 2019-07-02 | Faculty Research Associate (College of Forestry)
Employment
Source: Self-asserted source
Ryan A. Hill

Oak Ridge Institute for Science and Education c/o US EPA: Corvallis, OR, US

2014-01-06 to 2018-11-30 | Postdoctoral Fellow (Western Ecology Division/Freshwater Ecology Branch)
Employment
Source: Self-asserted source
Ryan A. Hill

Utah State University: Logan, UT, US

2006-08-01 to 2014-01-04 | Senior Research Associate
Employment
Source: Self-asserted source
Ryan A. Hill

Education and qualifications (1)

Utah State University: Logan, UT, US

2007-07-02 to 2013-05-04 | PhD/Watershed Ecology (Watershed Sciences)
Education
Source: Self-asserted source
Ryan A. Hill

Works (38)

Stories of data sharing

Nature Water
2025-01-16 | Journal article
DOI: 10.1038/s44221-024-00375-7
Part of ISSN: 2731-6084
Contributors: Ryan A. Hill; Shihong Lin; Erik Svensson Grape; Yongqiang Zhang; Oliver S. Schilling; Damien Voiry
Source: Self-asserted source
Ryan A. Hill

Modeling lake conductivity in the contiguous United States using spatial indexing for big spatial data

Spatial Statistics
2024-03 | Journal article
DOI: 10.1016/j.spasta.2023.100808
Part of ISSN: 2211-6753
Contributors: Michael Dumelle; Jay M. Ver Hoef; Amalia Handler; Ryan A. Hill; Matt Higham; Anthony R. Olsen
Source: Self-asserted source
Ryan A. Hill

The changing nitrogen landscape of United States streams: Declining deposition and increasing organic nitrogen

PNAS Nexus
2023-12-21 | Journal article
DOI: 10.1093/pnasnexus/pgad362
Contributors: Jiajia Lin; Jana E Compton; Robert D Sabo; Alan T Herlihy; Ryan A Hill; Marc H Weber; J Renée Brooks; Steve G Paulsen; John L Stoddard; Joann Whalen
Source: check_circle
Crossref

Disentangling natural and anthropogenic effects on benthic macroinvertebrate assemblages in western US streams

Ecosphere
2023-11 | Journal article
DOI: 10.1002/ecs2.4688
Contributors: C. Emi Fergus; J. Renée Brooks; Philip R. Kaufmann; Alan T. Herlihy; Ryan A. Hill; Richard M. Mitchell; Paul Ringold
Source: check_circle
Crossref

Joint species distribution models reveal taxon-specific sensitivities to potential anthropogenic alteration

Freshwater Science
2023-09-01 | Journal article
DOI: 10.1086/726283
Part of ISSN: 2161-9549
Part of ISSN: 2161-9565
Contributors: Darin A. Kopp; John L. Stoddard; Ryan A. Hill; Jessie M. Doyle; Philip R. Kaufmann; Alan T. Herlihy; Steven G. Paulsen
Source: Self-asserted source
Ryan A. Hill

Comparing Drivers of Spatial Variability in U.S. Lake and Stream Phosphorus Concentrations

Journal of Geophysical Research: Biogeosciences
2023-08 | Journal article | Author
DOI: 10.1029/2022jg007227
Part of ISSN: 2169-8953
Part of ISSN: 2169-8961
Contributors: Robert D. Sabo; Brian Pickard; Jiajia Lin; Benjamin Washington; Christopher Clark; Jana Compton; Michael Pennino; Britta Bierwagen; Stephen LeDuc; James Carleton et al.
Source: Self-asserted source
Ryan A. Hill

Density declines, richness increases, and composition shifts in stream macroinvertebrates

Science Advances
2023-05-05 | Journal article
DOI: 10.1126/sciadv.adf4896
Contributors: Samantha L. Rumschlag; Michael B. Mahon; Devin K. Jones; William Battaglin; Jonny Behrens; Emily S. Bernhardt; Paul Bradley; Ethan Brown; Frederik De Laender; Ryan Hill et al.
Source: check_circle
Crossref

Estimating biotic integrity to capture existence value of freshwater ecosystems

Proceedings of the National Academy of Sciences
2023-05-02 | Journal article
DOI: 10.1073/pnas.2120259119
Contributors: Ryan A. Hill; Chris C. Moore; Jessie M. Doyle; Scott G. Leibowitz; Paul L. Ringold; Brenda Rashleigh
Source: check_circle
Crossref

Identifying lakes at risk of toxic cyanobacterial blooms using satellite imagery and field surveys across the United States

Science of The Total Environment
2023-04 | Journal article
DOI: 10.1016/j.scitotenv.2023.161784
Part of ISSN: 0048-9697
Contributors: Amalia M. Handler; Jana E. Compton; Ryan A. Hill; Scott G. Leibowitz; Blake A. Schaeffer
Source: Self-asserted source
Ryan A. Hill

National hydrologic connectivity classification links wetlands with stream water quality

Nature Water
2023-04-06 | Journal article
DOI: 10.1038/s44221-023-00057-w
Contributors: Scott G. Leibowitz; Ryan A. Hill; Irena F. Creed; Jana E. Compton; Heather E. Golden; Marc H. Weber; Mark C. Rains; Chas E. Jones, Jr; E. Henry Lee; Jay R. Christensen et al.
Source: check_circle
Crossref

Random forest models to estimate bankfull and low flow channel widths and depths across the conterminous United States

JAWRA Journal of the American Water Resources Association
2023-03-21 | Journal article
DOI: 10.1111/1752-1688.13116
Part of ISSN: 1093-474X
Part of ISSN: 1752-1688
Contributors: Jessie Doyle; Ryan A. Hill; Scott G. Leibowitz; Joseph Ebersole
Source: Self-asserted source
Ryan A. Hill

A multiscale landscape approach for prioritizing river and stream protection and restoration actions

Ecosphere
2023-01 | Journal article
DOI: 10.1002/ecs2.4350
Contributors: Luisa Riato; Scott G. Leibowitz; Marc H. Weber; Ryan A. Hill
Source: check_circle
Crossref

Geospatial Patterns of Antimicrobial Resistance Genes in the US EPA National Rivers and Streams Assessment Survey

Environmental Science & Technology
2022-11-01 | Journal article
DOI: 10.1021/acs.est.2c00813
Part of ISSN: 0013-936X
Part of ISSN: 1520-5851
Contributors: Scott Keely; Nichole E. Brinkman; Emily A. Wheaton; Michael Jahne; Shawn D. Siefring; Manju Varma; Ryan A. Hill; Scott G. Leibowitz; Roy Martin; Jay L. Garland et al.
Source: Self-asserted source
Ryan A. Hill

Genus-level, trait-based multimetric diatom indices for assessing the ecological condition of rivers and streams across the conterminous United States

Ecological Indicators
2022-08 | Journal article
DOI: 10.1016/j.ecolind.2022.109131
Part of ISSN: 1470-160X
Contributors: Luisa Riato; Ryan A. Hill; Alan T. Herlihy; David V. Peck; Philip R. Kaufmann; John L. Stoddard; Steven G. Paulsen
Source: Self-asserted source
Ryan A. Hill

Natural and anthropogenic controls on lake water‐level decline and evaporation‐to‐inflow ratio in the conterminous United States

Limnology and Oceanography
2022-07 | Journal article
DOI: 10.1002/lno.12097
Contributors: C. Emi Fergus; J. Renée Brooks; Philip R. Kaufmann; Amina I. Pollard; Richard Mitchell; G. John Geldhof; Ryan A. Hill; Steven G. Paulsen; Paul Ringold; Marc Weber
Source: check_circle
Crossref

Vulnerable Waters are Essential to Watershed Resilience

Ecosystems
2022-02-07 | Journal article
DOI: 10.1007/s10021-021-00737-2
Part of ISSN: 1432-9840
Part of ISSN: 1435-0629
Source: Self-asserted source
Ryan A. Hill

Context is Everything: Interacting Inputs and Landscape Characteristics Control Stream Nitrogen

Environmental Science & Technology
2021-06-15 | Journal article
DOI: 10.1021/acs.est.0c07102
Part of ISSN: 0013-936X
Part of ISSN: 1520-5851
Source: Self-asserted source
Ryan A. Hill

Valuing Aquatic Ecosystem Health at a National Scale: Modeling Biological Indicators Across Space and Time

Unknown
2020 | Journal article
DOI: 10.22004/AG.ECON.307891
Source: Self-asserted source
Ryan A. Hill

Wetland Flowpaths Mediate Nitrogen and Phosphorus Concentrations across the Upper Mississippi River Basin

JAWRA Journal of the American Water Resources Association
2020-10-15 | Journal article
DOI: 10.1111/1752-1688.12885
Part of ISSN: 1093-474X
Part of ISSN: 1752-1688
Source: Self-asserted source
Ryan A. Hill

Patterns and predictions of drinking water nitrate violations across the conterminous United States

Science of The Total Environment
2020-06 | Journal article
DOI: 10.1016/j.scitotenv.2020.137661
Part of ISSN: 0048-9697
Source: Self-asserted source
Ryan A. Hill

Adapting the Index of Watershed Integrity for Watershed Managers in the Western Balkans Region

Environmental Management
2020-05 | Journal article
DOI: 10.1007/s00267-020-01280-x
Contributors: Kelsey B. Aho; Joseph E. Flotemersch; Scott G. Leibowitz; Zachary C. Johnson; Marc H. Weber; Ryan A. Hill
Source: check_circle
Crossref

Prioritizing management goals for stream biological integrity within the developed landscape context

Freshwater Science
2019-12 | Journal article
DOI: 10.1086/705996
Part of ISSN: 2161-9549
Part of ISSN: 2161-9565
Source: Self-asserted source
Ryan A. Hill

Improving the performance of ecological indices by balancing reference site quality and representativeness

Hydrobiologia
2019-07 | Journal article
DOI: 10.1007/s10750-019-3970-3
Part of ISSN: 0018-8158
Part of ISSN: 1573-5117
Source: Self-asserted source
Ryan A. Hill

Revising the index of watershed integrity national maps

Science of The Total Environment
2019-02 | Journal article
DOI: 10.1016/j.scitotenv.2018.10.112
Part of ISSN: 0048-9697
Source: Self-asserted source
Ryan A. Hill

Nitrogen inputs drive nitrogen concentrations in U.S. streams and rivers during summer low flow conditions

Science of The Total Environment
2018-10 | Journal article
DOI: 10.1016/j.scitotenv.2018.05.008
Part of ISSN: 0048-9697
Source: Self-asserted source
Ryan A. Hill

A flow-chart for developing water quality criteria from two field-based methods

Science of The Total Environment
2018-08 | Journal article
DOI: 10.1016/j.scitotenv.2018.01.137
Part of ISSN: 0048-9697
Source: Self-asserted source
Ryan A. Hill

The Lake-Catchment (LakeCat) Dataset: characterizing landscape features for lake basins within the conterminous USA

Freshwater Science
2018-06 | Journal article
DOI: 10.1086/697966
Part of ISSN: 2161-9549
Part of ISSN: 2161-9565
Source: Self-asserted source
Ryan A. Hill

Mapping watershed integrity for the conterminous United States

Ecological Indicators
2018-02 | Journal article
DOI: 10.1016/j.ecolind.2017.10.070
Part of ISSN: 1470-160X
Source: Self-asserted source
Ryan A. Hill

Predictive mapping of the biotic condition of conterminous U.S. rivers and streams

Ecological Applications
2017-12 | Journal article
DOI: 10.1002/eap.1617
Part of ISSN: 1051-0761
Source: Self-asserted source
Ryan A. Hill

Assessing the accuracy and stability of variable selection methods for random forest modeling in ecology

Environmental Monitoring and Assessment
2017-07 | Journal article
DOI: 10.1007/s10661-017-6025-0
Part of ISSN: 0167-6369
Part of ISSN: 1573-2959
Source: Self-asserted source
Ryan A. Hill

A Watershed Integrity Definition and Assessment Approach to Support Strategic Management of Watersheds

River Research and Applications
2016-09 | Journal article
DOI: 10.1002/rra.2978
Part of ISSN: 1535-1459
Part of ISSN: 1535-1467
Source: Self-asserted source
Ryan A. Hill

The Stream-Catchment (StreamCat) Dataset: A Database of Watershed Metrics for the Conterminous United States

JAWRA Journal of the American Water Resources Association
2016-02 | Journal article
DOI: 10.1111/1752-1688.12372
Part of ISSN: 1093-474X
Source: Self-asserted source
Ryan A. Hill

Using modelled stream temperatures to predict macro-spatial patterns of stream invertebrate biodiversity

Freshwater Biology
2014-12 | Journal article
DOI: 10.1111/fwb.12459
Part of ISSN: 0046-5070
Source: Self-asserted source
Ryan A. Hill

Predicting thermal vulnerability of stream and river ecosystems to climate change

Climatic Change
2014-08 | Journal article
DOI: 10.1007/s10584-014-1174-4
Part of ISSN: 0165-0009
Part of ISSN: 1573-1480
Source: Self-asserted source
Ryan A. Hill

Linking land use, in-stream stressors, and biological condition to infer causes of regional ecological impairment in streams

Freshwater Science
2013-09 | Journal article
DOI: 10.1899/12-186.1
Part of ISSN: 2161-9549
Part of ISSN: 2161-9565
Source: Self-asserted source
Ryan A. Hill

Predicting thermal reference conditions for USA streams and rivers

Freshwater Science
2013-03 | Journal article
DOI: 10.1899/12-009.1
Part of ISSN: 2161-9549
Part of ISSN: 2161-9565
Source: Self-asserted source
Ryan A. Hill

Natural flow regime, temperature and the composition and richness of invertebrate assemblages in streams of the western United States

Freshwater Biology
2011-07 | Journal article
DOI: 10.1111/j.1365-2427.2010.02560.x
Part of ISSN: 0046-5070
Source: Self-asserted source
Ryan A. Hill

The reference condition: predicting benchmarks for ecological and water-quality assessments

Journal of the North American Benthological Society
2010-03 | Journal article
DOI: 10.1899/09-092.1
Part of ISSN: 0887-3593
Part of ISSN: 1937-237X
Source: Self-asserted source
Ryan A. Hill
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