Evaluating debris-flow hazards in Davis County, Utah: Engineering versus geological approaches

Keaton, Jeffrey R.; Lowe, Mike

doi:10.1130/reg12-p97

Cited by 7 publications

(7 citation statements)

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“…Debris flow fans -Alluvial fans that were built up through successive hyperconcentrated, transitional, and debris flow events (Keaton and Lowe, 1998;Staley and others, 2006). Slopes on debris flow fans may be as steep as 6 to 8 degrees (or greater) and may have terminal lobes, marginal levees, and trapezoidal or U-shaped channels with relatively low width-todepth ratios.…”

Section: Types Of Alluvial Fansmentioning

confidence: 99%

Digital Mapping Techniques '10-Workshop Proceedings, Sacramento, California, May 16-19, 2010

Soller¹

2012

Open-File Report

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The Digital Mapping Techniques '10 (DMT'10) workshop was attended by 110 technical experts from 40 agencies, universities, and private companies, including representatives from 19 State geological surveys (see Appendix A). This workshop, hosted by the California Geological Survey, May 16-19, 2010, in Sacramento, California, was similar in nature to the previous 13 meetings (see Appendix B). The meeting was coordinated by the U.S. Geological Survey's (USGS) National Geologic Map Database project. As in the previous meetings, the objective was to foster informal discussion and exchange of technical information. It is with great pleasure that I note that the objective was again successfully met, as attendees continued to share and exchange knowledge and information, and renew friendships and collegial work begun at past DMT workshops. At this meeting, oral and poster presentations and special discussion sessions emphasized (1) methods for creating and publishing map products ("publishing" includes Web-based release); (2) field data capture software and techniques, including the use of LiDAR; (3) digital cartographic techniques; (4) migration of digital maps into ArcGIS Geodatabase format; (5) analytical GIS techniques; and (6) continued development of the National Geologic Map Database. Acknowledgments My sincere appreciation is offered to the California Geological Survey (CGS), and especially to George Saucedo, who was the principal CGS organizer for this meeting. George was assisted by Margaret Hyland, Milind Patel, Chris Wills, and Karen Saucedo; together they provided the meeting attendees with a most enjoyable venue for learning and exchanging technical information. I also thank the California Geological Survey (CGS) and the Director and State Geologist, John Parrish, for hosting this meeting, and for encouraging his staff to participate; in the first seven papers of these Proceedings the mapping science and digital techniques of the CGS are highlighted. Last, but not least, I thank all attendees for their participation; their enthusiasm and expertise were the primary reasons for the meeting's success.

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Section: Types Of Alluvial Fansmentioning

confidence: 99%

Digital Mapping Techniques '10-Workshop Proceedings, Sacramento, California, May 16-19, 2010

Soller¹

2012

Open-File Report

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“…Several sources used to compile the database did not differentiate between flood and debris-flow events, making it necessary to develop criteria to use when searching for debris flows. These sources include the flood chronologies developed by Woolley (1946), Keetch (1971), Butler and Marsell (1972), and the National Weather Service (2003), as well as the debris-flow summary for Davis County by Keaton and Lowe (1998). Due to varying reporting styles of the sources, we used different criteria to search the flood chronologies and the Davis County debris-flow summary.…”

Section: Debris-flow Search Criteriamentioning

confidence: 99%

“…The Keaton and Lowe (1998) report on Davis County debris-flow hazards contains a summary of historical floods in which estimated annual deposit volumes are given for different canyons. Using this information, we included any year with a reported volume greater than 1,300 cubic yards for a canyon as a single debris-flow event.…”

Section: Debris-flow Search Criteriamentioning

confidence: 99%

“…Previous historical-flood chronologies such as Woolley (1946), Keetch (1971), Butler and Marsell (1972), and the National Weather Service (2003) have been completed for cloudburst-related floods, and were used to search for debris flows. Previous historical-landslide chronologies such as Keate (1991) and Keaton and Lowe (1998) were also used to search for debris flows. Several site-specific studies were also referenced, including studies of the North Fork of the Ogden River (Croft and Adams, 1950), the middle Wasatch Front (Goode, 1975), and the Logan Bluff landslide zone (Olsen, 2006).…”

Section: Other Sourcesmentioning

confidence: 99%

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The preliminary landslide history database of Utah, 1850-1978 {electronic resource]

2007

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This open-file report makes information available to the public that may not conform to UGS technical, editorial, or policy standards. Therefore it may be premature for an individual or group to take actions based on its contents. Although this product represents the work of professional scientists, the Utah Department of Natural Resources, Utah Geological Survey, makes no warranty, expressed or implied, regarding its suitability for a particular use. The Utah Department of Natural Resources, Utah Geological Survey, shall not be liable under any circumstances for any direct, indirect, special, incidental, or consequential damages with respect to claims by users of this product.

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“…Historically, communities along the Wasatch Front have experienced damaging debris flow events (Keaton and Lowe, 1998). In some locations, there are events recorded from the early settlement of the area by Mormon pioneers.…”

Section: Land-use Planning In An Expanding Urban Areamentioning

confidence: 99%

Solving the dilemma of transforming landslide hazard maps into effective policy and regulations

DeGraff

2012

Nat. Hazards Earth Syst. Sci.

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Abstract. As geoscientists, we often perceive the production of a map or model to adequately define landslide hazard for an area as the answer or end point for reducing risk to people and property. In reality, the risk to people and property remains pretty much the same as it did before the map existed. Real landslide risk reduction takes place when the activities and populations at risk are changed so the consequences of a landslide event results in lower losses. Commonly, this takes place by translating the information embodied in the landslide hazard map into some change in policy and regulation applying to the affected area. This is where the dilemma arises. Scientific information generally has qualifications, gradations, and conditions associated with it. Regulations are necessarily written in language that tries to avoid any need for interpretation. Effectively incorporating geologic information into regulations and ordinances requires continued involvement with their development and implementation. Unless geoscientists are willing to participate in that process, sustainable risk reduction is unlikely to occur.

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Evaluating debris-flow hazards in Davis County, Utah: Engineering versus geological approaches

Cited by 7 publications

References 0 publications

Digital Mapping Techniques '10-Workshop Proceedings, Sacramento, California, May 16-19, 2010

Digital Mapping Techniques '10-Workshop Proceedings, Sacramento, California, May 16-19, 2010

The preliminary landslide history database of Utah, 1850-1978 {electronic resource]

Solving the dilemma of transforming landslide hazard maps into effective policy and regulations

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