Norman E. Spahr

1.4k total citations
22 papers, 1.1k citations indexed

About

Norman E. Spahr is a scholar working on Water Science and Technology, Environmental Chemistry and Geochemistry and Petrology. According to data from OpenAlex, Norman E. Spahr has authored 22 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Water Science and Technology, 17 papers in Environmental Chemistry and 7 papers in Geochemistry and Petrology. Recurrent topics in Norman E. Spahr's work include Soil and Water Nutrient Dynamics (17 papers), Water Quality and Resources Studies (14 papers) and Groundwater and Isotope Geochemistry (6 papers). Norman E. Spahr is often cited by papers focused on Soil and Water Nutrient Dynamics (17 papers), Water Quality and Resources Studies (14 papers) and Groundwater and Isotope Geochemistry (6 papers). Norman E. Spahr collaborates with scholars based in United States. Norman E. Spahr's co-authors include David K. Mueller, David M. Wolock, Anthony J. Tesoriero, John H. Duff, Neil M. Dubrovsky, Donald H. Campbell, John T. Turk, Mark D. Munn, Jo Ann M. Gronberg and JoAnn M. Gronberg and has published in prestigious journals such as Environmental Science & Technology, Water Resources Research and Journal of Environmental Quality.

In The Last Decade

Norman E. Spahr

21 papers receiving 886 citations

Peers

Norman E. Spahr

WST

ECOLO

M. Harrow United Kingdom

Henry M. Johnson United States

Philippe Vervier France

Robert M. Newton United States

David K. Mueller United States

David A. Saad United States

Steven A. Gherini United States

J.M. Eilers United States

Vance C. Kennedy United States

Minpeng Hu China

M. Harrow United Kingdom

Norman E. Spahr

587 ×0.9

513 ×0.9

WST

231 ×0.7

124 ×0.6

204 ×1.1

ECOLO

Citations per year, relative to Norman E. Spahr Norman E. Spahr (= 1×) peers M. Harrow

Countries citing papers authored by Norman E. Spahr

Since Specialization

Citations

This map shows the geographic impact of Norman E. Spahr's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Norman E. Spahr with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Norman E. Spahr more than expected).

Fields of papers citing papers by Norman E. Spahr

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Norman E. Spahr. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Norman E. Spahr. The network helps show where Norman E. Spahr may publish in the future.

Co-authorship network of co-authors of Norman E. Spahr

This figure shows the co-authorship network connecting the top 25 collaborators of Norman E. Spahr. A scholar is included among the top collaborators of Norman E. Spahr based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Norman E. Spahr. Norman E. Spahr is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Tesoriero, Anthony J., John H. Duff, David A. Saad, Norman E. Spahr, & David M. Wolock. (2013). Vulnerability of Streams to Legacy Nitrate Sources. Environmental Science & Technology. 47(8). 3623–3629. 136 indexed citations

Gronberg, Jo Ann M. & Norman E. Spahr. (2012). County-level estimates of nitrogen and phosphorus from commercial fertilizer for the Conterminous United States, 1987-2006. Scientific investigations report. 64 indexed citations

Spahr, Norman E., Neil M. Dubrovsky, JoAnn M. Gronberg, O. Lehn Franke, & David M. Wolock. (2010). Nitrate Loads and Concentrations in Surface-Water Base Flow and Shallow Groundwater for Selected Basins in the United States, Water Years 1990-2006. Scientific investigations report. 21 indexed citations

Spahr, Norman E., David K. Mueller, David M. Wolock, Kerie J. Hitt, & JoAnn M. Gronberg. (2010). Development and Application of Regression Models for Estimating Nutrient Concentrations in Streams of the Conterminous United States, 1992-2001. Scientific investigations report. 9 indexed citations

Dubrovsky, Neil M., Karen R. Burow, Gregory M. Clark, et al.. (2010). The quality of our nation's waters: Nutrients in the nation's streams and groundwater, 1992-2004. U.S. Geological Survey circular. 329 indexed citations

Porter, Stephen D., David K. Mueller, Norman E. Spahr, Mark D. Munn, & Neil M. Dubrovsky. (2008). Efficacy of algal metrics for assessing nutrient and organic enrichment in flowing waters. Freshwater Biology. 53(5). 1036–1054. 85 indexed citations

Mueller, David K. & Norman E. Spahr. (2006). Nutrients in streams and rivers across the nation — 1992–2001. Scientific investigations report. 48 indexed citations

Mueller, David K. & Norman E. Spahr. (2005). Water-quality, streamflow, and ancillary data for nutrients in streams and rivers across the nation, 1992-2001. Data series. 17 indexed citations

Spahr, Norman E., et al.. (2001). Using water, bryophytes, and macroinvertebrates to assess trace element concentrations in the Upper Colorado River Basin. Hydrobiologia. 455(1-3). 29–39. 10 indexed citations

10.

Spahr, Norman E., et al.. (2000). Water quality in the upper Colorado River basin, Colorado, 1996-98. U.S. Geological Survey circular. 11 indexed citations

11.

Spahr, Norman E., et al.. (1998). Salinity Trends in Surface Waters of the Upper Colorado River Basin, Colorado. Journal of Environmental Quality. 27(3). 640–655. 13 indexed citations

12.

Spahr, Norman E., et al.. (1998). Low-flow water-quality characterization of the Gore Creek watershed, upper Colorado River basin, Colorado, August 1996. Fact sheet. 2 indexed citations

13.

Spahr, Norman E., et al.. (1997). NITROGEN AND PHOSPHORUS IN SURFACE WATERS OF THE UPPER COLORADO RWER BASIN¹. JAWRA Journal of the American Water Resources Association. 33(3). 547–560. 12 indexed citations

14.

Spahr, Norman E., Nancy E. Driver, & Verlin C. Stephens. (1996). The Upper Colorado River; National Water-Quality Assessment Program; surface-water-monitoring network. Fact sheet. 3 indexed citations

15.

Campbell, Donald H., David W. Clow, George P. Ingersoll, et al.. (1995). Processes Controlling the Chemistry of Two Snowmelt‐Dominated Streams in the Rocky Mountains. Water Resources Research. 31(11). 2811–2821. 157 indexed citations

16.

Turk, John T., Donald H. Campbell, & Norman E. Spahr. (1993). Use of chemistry and stable sulfur isotopes to determine sources of trends in sulfate of Colorado lakes. Water Air & Soil Pollution. 67(3-4). 415–431. 23 indexed citations

17.

Williams, R. Stanley, G. Michael Clark, & Norman E. Spahr. (1993). Climatologic, soil-water, ground-water, geologic, surface-water, and water-quality data for a surface coal mine in northwestern Colorado. Antarctica A Keystone in a Changing World.

18.

Campbell, Donald H., John T. Turk, & Norman E. Spahr. (1991). Response of Ned Wilson Lake Watershed, Colorado, to Changes in Atmospheric Deposition of Sulfate. Water Resources Research. 27(8). 2047–2060. 17 indexed citations

19.

Spahr, Norman E., et al.. (1985). Selected hydrologic data for the south Platte River through Denver, Colorado. Antarctica A Keystone in a Changing World. 1 indexed citations

20.

Spahr, Norman E., et al.. (1980). Flood potential of Topopah Wash and tributaries, eastern part of Jackass Flats, Nevada Test Site, southern Nevada. Antarctica A Keystone in a Changing World. 4 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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