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Overview
Basics
Basics
Quantify the potential for the Upper Truckee River and other floodplains to retain fine sediments by linking, calibrating, and validating an urban hydrology model (SWMM) and a floodplain sediment model (SIFT2D-WQ).
Completed
2007
2008
2011
$296,570
Patricia Maloney (pemaloney@ucdavis.edu)
10/27/2017
10/27/2017
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| Location Information | Location Notes |
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Organizations
EIP Details
EIP Basics
EIP Basics
04.01.01.0090 - P025: Two-dimensional Numerical Modeling of Suspended Sediment on the Trout Creek Floodplain
Performance Measures
Expected Performance Measures
Expected Performance Measures
No expected performance measures set for this project.
Reported Performance Measures
Reported Performance Measures
No annual performance measure accomplishments entered for this project.
Funding
Expected Funding
Expected Funding
$296,570
$296,570
$0
| Total | |||
|---|---|---|---|
| Southern Nevada Public Land Management Act (Pacific Southwest Research Station) (USFS - PSW) | $296,570 | $296,570 | $0 |
| Grand Total | $296,570 | $296,570 | $0 |
Reported Expenditures
Reported Expenditures
| Total | 2011 | 2010 | 2009 | 2008 | 2007 | |
|---|---|---|---|---|---|---|
| Southern Nevada Public Land Management Act (Pacifi... | $296,570 | $59,314 | $59,314 | $59,314 | $59,314 | $59,314 |
| Grand Total | $296,570 | $59,314 | $59,314 | $59,314 | $59,314 | $59,314 |
Photos
Other Details
Watersheds
No watersheds set for this project.
Threshold Categories
-
Estimating and determining methods of increasing floodplain sediment deposition in the South Lake Tahoe area is important because of the large detrimental effect fine sediment loads from this area have on Lake Tahoe clarity.
Local and Regional Plans
No Local and Regional Plans set for this project.
Related Projects
Related Projects
No Related Projects set for this project.
External Links
No external links entered.
Notes
Notes
| 10/27/2017 1:46 PM | Matt Driscoll | Match Funding: $66,295 | ||
| 08/18/2017 6:33 AM | Kiara Cuerpo-Hadsall | Objectives: The objective of this study was to create and implement a two-dimensional hydrodynamic and suspended sediment model in order to assess the sediment retention capacity of South Lake Tahoe floodplains. This model was then used to explore what simple changes to a restored floodplain could be made (for example plantings of specific vegetation types, or small berm or weir placements) in order to maximize floodplain fine sediment retention. The model was used to separate the physical processes responsible for the sediment removal and elucidate why certain modifications result in higher sediment retention. The correctly calibrated and validated model was then applied to additional field sites in the South Lake Tahoe area to estimate or predict sediment removal associated with a variety of flood events. |
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| 08/18/2017 6:33 AM | Kiara Cuerpo-Hadsall | Findings: • The calibrated model indicated that, of the physical mechanisms leading to fine sediment removal considered, flocculation was the largest, with gravitational settling and sediment stranding by infiltration also being significant. • Floodplains have great potential for removing fine sediment, as these sediments are the ones most prone to removal by flocculation. • Floodplain modification simulations indicated that changes made to the floodplain vegetation and the addition of small backwater depression areas will have minimal impacts on overall sediment retention. • Small weirs placed in the channel during flooding will have large effects on fine sediment removal, with increases in sediment retention of 20%, if weir placement results in the flooding of previously dry areas. |
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| 08/18/2017 6:33 AM | Kiara Cuerpo-Hadsall | Management Implications: • If the results of this study are to guide future restoration efforts, small weirs are the recommendation of the authors to significantly increase floodplain sediment retention. It is clear that these weirs must be carefully placed so that the resulting flooding inundates previously dry areas and creates the greatest benefits. • Weirs, through their low costs and low planning demands, may have value as an interim floodplain BMP while more extensive and more broadly beneficial stream/floodplain restoration projects are being developed. • Changes in floodplain vegetation or the addition of backwater pond areas are not likely to produce significant effects on sediment retention although they may have other benefits related to habitat, scenic value etc. |
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| 08/18/2017 6:32 AM | Kiara Cuerpo-Hadsall | Publications: www.fs.fed.us/PSW/partnerships/tahoescience Two-dimensional Numerical Modeling of Suspended Sediment on the Trout Creek Floodplain. Stephen Andrews, S. Geoffrey Schladow and Daniel Nover. |