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Overview
Basics
Basics
This project developed an upland decision support tool to assist managers in the selection and assessment of site-specific management options to reduce forest fuel loads and to evaluate effectiveness of sediment mitigation practices. TBSM is a flexible web-interface tool which will assess the effects of site-specific management practices on sediment transport and delivery from a treated hillslope to a channel.
Completed
2009
2010
2014
$200,949
Kat McIntyre (KMcIntyre@trpa.gov)
10/30/2017
10/30/2017
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| Location Information | Location Notes |
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Organizations
EIP Details
EIP Basics
EIP Basics
04.01.01.0107 - P052: Development and Validation of the Tahoe Project Sediment Model
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
$200,949
$200,949
$0
| Total | |||
|---|---|---|---|
| Southern Nevada Public Land Management Act (Pacific Southwest Research Station) (USFS - PSW) | $200,949 | $200,949 | $0 |
| Grand Total | $200,949 | $200,949 | $0 |
Reported Expenditures
Reported Expenditures
| Total | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | |
|---|---|---|---|---|---|---|---|
| Southern Nevada Public Land Management Act (Pacifi... | $200,949 | $33,492 | $33,491 | $33,492 | $33,491 | $33,492 | $33,491 |
| Grand Total | $200,949 | $33,492 | $33,491 | $33,492 | $33,491 | $33,492 | $33,491 |
Photos
Other Details
Watersheds
No watersheds set for this project.
Threshold Categories
-
Now more than ever there is a great need for scientifically defensible upland decision support tools in the Lake Tahoe basin. The recognition of the excess build-up of forest fuels and the continued struggle with maintaining or improving clarity in the lake has put enormous pressure on decision-makers in the basin.
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
| 10/30/2017 1:20 PM | Matt Driscoll | Match Funding: $28,335 | ||
| 08/24/2017 6:57 AM | Kiara Cuerpo-Hadsall | Objectives: The goal of this project was to develop the Tahoe Basin Sediment Model (TBSM) online decision support tool to be used by forest managers and planners in the Tahoe Basin to assess hillslope-scale fine sediment (<20 µm) loads for the most common forest upland management practices in the basin under current and future climate scenarios. The primary objectives of the project were to: • Compile a database of existing upland rainfall, runoff, and erosion experiments in the Tahoe Basin. • Develop WEPP input files from existing datasets in the basin for the most common forest upland management practices. • Develop a climate generation tool that creates current and future climate files for any project location in the Tahoe basin. • Develop the TBSM with user friendly protocols for evaluating the effects of alternative management practices on fine sediment loads. • Validate TBSM loading estimates for fine sediment (<20 µm) from current and proposed monitoring projects within the basin). |
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| 08/24/2017 6:57 AM | Kiara Cuerpo-Hadsall | Findings: • SRP in surface runoff is likely less than 0.01 mg/L, whereas SRP concentrations in lateral flow and base flow are likely to be around 0.02 mg/l. • Concentrations are the lowest during March and April when surface runoff is contributing to runoff and diluting lateral and base flow, but higher from June onwards when lateral flow and base flow are the main sources of water in the stream system. • Total phosphorus delivered, however, is likely to be the highest during the peak flow times associated with snow melt in April and May |
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| 08/24/2017 6:56 AM | Kiara Cuerpo-Hadsall | Management Implications: • The TBSM User Guide was drafted, with worksheet exercises from the training workshops included as appendices to assist users. • The interface clearly shows the link between sediment delivery and TP delivery. Past watershed research has shown that sediment budgets from forest watersheds are dominated by wildfire, with sediment delivery following wildfire as much as 100 times greater than associated with undisturbed forests. Such sediment pulses will likely dominate delivery of phosphorus in the same way as they dominate the sediment budget. Managers will need to consider the effects of management practices not only on immediate sediment delivery, but also on the effects that management may have on reducing the probability or severity of wildfires because of those activities (Elliot, 2013). • Another interesting hydrologic feature of coarse forest soils is that unless the soils are highly disturbed, there is little surface runoff. Results indicate that when surface runoff does occur, SRP concentrations are low, but when lateral flow or subsurface flow dominate the runoff, SRP concentrations increase. The net effect of integrating the runoff and concentrations values suggests that total SRP delivery is the greatest when runoff is the greatest. |
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| 08/23/2017 7:04 AM | Kiara Cuerpo-Hadsall | Publications: www.fs.fed.us/PSW/partnerships/tahoescience Dr. William Elliot, Dr. Erin Brooks, and Drea Traeumer, Development and Validation of the Tahoe Project Sediment Model. Final Report, December 2014. |