Robert Holmes, Jr., Ph.D., P.E., F.ASCE, F.EWRI, D.WRE (Former Employee)
Science and Products
Filter Total Items: 104
Measurement of bedload transport in sand-bed rivers: A look at two indirect sampling methods Measurement of bedload transport in sand-bed rivers: A look at two indirect sampling methods
Sand-bed rivers present unique challenges to accurate measurement of the bedload transport rate using the traditional direct sampling methods of direct traps (for example the Helley-Smith bedload sampler). The two major issues are: 1) over sampling of sand transport caused by “mining” of sand due to the flow disturbance induced by the presence of the sampler and 2) clogging of the mesh...
Authors
Robert R. Holmes
Multiple well-shutdown tests and site-scale flow simulation in fractured rocks Multiple well-shutdown tests and site-scale flow simulation in fractured rocks
A new method was developed for conducting aquifer tests in fractured-rock flow systems that have a pump-and-treat (P&T) operation for containing and removing groundwater contaminants. The method involves temporary shutdown of individual pumps in wells of the P&T system. Conducting aquifer tests in this manner has several advantages, including (1) no additional contaminated water is...
Authors
Claire R. Tiedeman, Pierre J. Lacombe, Daniel J. Goode
Factoring uncertainty into restoration modeling of in-situ leach uranium mines Factoring uncertainty into restoration modeling of in-situ leach uranium mines
Postmining restoration is one of the greatest concerns for uranium in-situ leach (ISL) mining operations. The ISL-affected aquifer needs to be returned to conditions specified in the mining permit (either premining or other specified conditions). When uranium ISL operations are completed, postmining restoration is usually achieved by injecting reducing agents into the mined zone. The...
Authors
Raymond H. Johnson, Michael J. Friedel
Initial sediment transport model of the mining-affected Aries River Basin, Romania Initial sediment transport model of the mining-affected Aries River Basin, Romania
The Romanian government is interested in understanding the effects of existing and future mining activities on long-term dispersal, storage, and remobilization of sediment-associated metals. An initial Soil and Water Assessment Tool (SWAT) model was prepared using available data to evaluate hypothetical failure of the Valea Sesei tailings dam at the Rosia Poieni mine in the Aries River...
Authors
Michael J. Friedel, Joshua I. Linard
Reconnaissance study of water quality in the mining-affected Aries River Basin, Romania Reconnaissance study of water quality in the mining-affected Aries River Basin, Romania
The Aries River basin of western Romania has been subject to mining activities as far back as Roman times. Present mining activities are associated with the extraction and processing of various metals including Au, Cu, Pb, and Zn. To understand the effects of these mining activities on the environment, this study focused on three objectives: (1) establish a baseline set of physical...
Authors
Michael J. Friedel, James A. Tindall, Daniel Sardan, David L. Fey, G.L. Poputa
Hydrologic modeling strategy for the Islamic Republic of Mauritania, Africa Hydrologic modeling strategy for the Islamic Republic of Mauritania, Africa
The government of Mauritania is interested in how to maintain hydrologic balance to ensure a long-term stable water supply for minerals-related, domestic, and other purposes. Because of the many complicating and competing natural and anthropogenic factors, hydrologists will perform quantitative analysis with specific objectives and relevant computer models in mind. Whereas various...
Authors
Michael J. Friedel
Non-USGS Publications**
Watson, Chester C., Holmes, Jr., R.R., and Biedenharn, D.S..,2013, Mississippi River Streamflow Measurement Techniques at St. Louis, Missouri, Journal of Hydraulic Engineering, 139 (10), pp 1062-1070
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 104
Measurement of bedload transport in sand-bed rivers: A look at two indirect sampling methods Measurement of bedload transport in sand-bed rivers: A look at two indirect sampling methods
Sand-bed rivers present unique challenges to accurate measurement of the bedload transport rate using the traditional direct sampling methods of direct traps (for example the Helley-Smith bedload sampler). The two major issues are: 1) over sampling of sand transport caused by “mining” of sand due to the flow disturbance induced by the presence of the sampler and 2) clogging of the mesh...
Authors
Robert R. Holmes
Multiple well-shutdown tests and site-scale flow simulation in fractured rocks Multiple well-shutdown tests and site-scale flow simulation in fractured rocks
A new method was developed for conducting aquifer tests in fractured-rock flow systems that have a pump-and-treat (P&T) operation for containing and removing groundwater contaminants. The method involves temporary shutdown of individual pumps in wells of the P&T system. Conducting aquifer tests in this manner has several advantages, including (1) no additional contaminated water is...
Authors
Claire R. Tiedeman, Pierre J. Lacombe, Daniel J. Goode
Factoring uncertainty into restoration modeling of in-situ leach uranium mines Factoring uncertainty into restoration modeling of in-situ leach uranium mines
Postmining restoration is one of the greatest concerns for uranium in-situ leach (ISL) mining operations. The ISL-affected aquifer needs to be returned to conditions specified in the mining permit (either premining or other specified conditions). When uranium ISL operations are completed, postmining restoration is usually achieved by injecting reducing agents into the mined zone. The...
Authors
Raymond H. Johnson, Michael J. Friedel
Initial sediment transport model of the mining-affected Aries River Basin, Romania Initial sediment transport model of the mining-affected Aries River Basin, Romania
The Romanian government is interested in understanding the effects of existing and future mining activities on long-term dispersal, storage, and remobilization of sediment-associated metals. An initial Soil and Water Assessment Tool (SWAT) model was prepared using available data to evaluate hypothetical failure of the Valea Sesei tailings dam at the Rosia Poieni mine in the Aries River...
Authors
Michael J. Friedel, Joshua I. Linard
Reconnaissance study of water quality in the mining-affected Aries River Basin, Romania Reconnaissance study of water quality in the mining-affected Aries River Basin, Romania
The Aries River basin of western Romania has been subject to mining activities as far back as Roman times. Present mining activities are associated with the extraction and processing of various metals including Au, Cu, Pb, and Zn. To understand the effects of these mining activities on the environment, this study focused on three objectives: (1) establish a baseline set of physical...
Authors
Michael J. Friedel, James A. Tindall, Daniel Sardan, David L. Fey, G.L. Poputa
Hydrologic modeling strategy for the Islamic Republic of Mauritania, Africa Hydrologic modeling strategy for the Islamic Republic of Mauritania, Africa
The government of Mauritania is interested in how to maintain hydrologic balance to ensure a long-term stable water supply for minerals-related, domestic, and other purposes. Because of the many complicating and competing natural and anthropogenic factors, hydrologists will perform quantitative analysis with specific objectives and relevant computer models in mind. Whereas various...
Authors
Michael J. Friedel
Non-USGS Publications**
Watson, Chester C., Holmes, Jr., R.R., and Biedenharn, D.S..,2013, Mississippi River Streamflow Measurement Techniques at St. Louis, Missouri, Journal of Hydraulic Engineering, 139 (10), pp 1062-1070
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.