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Overview
Basics
Basics
Application of the stream load reduction tool (SLRT) to quantify the project and reach scale water quality benefits of Upper Truckee River restoration efforts
Completed
2011
2012
2014
$107,393
Maggie Mathias (maggie@2ndnaturellc.com)
09/20/2017
09/20/2017
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| Location Information | Location Notes |
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Organizations
Organizations
| 2nd Nature, LLC (2N) | Maggie Mathias - 2nd Nature, LLC (2N) |
EIP Details
EIP Basics
EIP Basics
04.01.01.0056 - P089: Estimated FSP Load Reduction of Select Stream Restoration Projects in the Upper Truckee River in the LTB Watershed
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
$107,393
$107,393
$0
| Total | |||
|---|---|---|---|
| Unknown or Unassigned | $107,393 | $107,393 | $0 |
| Grand Total | $107,393 | $107,393 | $0 |
Reported Expenditures
Reported Expenditures
No expenditures have been reported for this project.
Photos
Other Details
Watersheds
No watersheds set for this project.
Threshold Categories
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As the largest watershed in the Tahoe Basin, Upper Truckee River is the greatest point discharge of fine sediment particles (FSP < 16 µm) to Lake Tahoe.
Local and Regional Plans
No Local and Regional Plans set for this project.
Related Projects
Related Projects
No Related Projects set for this project.
External Links
No external links entered.
Notes
Notes
| 09/13/2017 2:41 PM | System | Objectives: The Lake Tahoe TMDL has focused water quality improvement actions to significantly reduce fine sediment particle (FSP) loading to the lake over the next several decades. Research and monitoring that supported the development of the stream load reduction tool (SLRT) suggests effective stream environment zone (SEZ) restoration can reduce sediment generation from bank erosion and significantly increase FSP removal in flood flows as a result of floodplain deposition. While standard methods to estimate the urban derived fraction of this FSP loading do not exist, it is likely some load reduction from catchment urban lands are being treated. There is a lot of political and social interest associated with the evaluation of restoration effectiveness within the Upper Truckee River (UTR) Watershed, making the results of this research relevant and important to many stakeholders within the Lake Tahoe Basin. The three main objectives of this research were: • Obtain and analyze the average annual FSP load reductions estimated for a series of restoration projects in the Upper Truckee Watershed both independently and collectively. • Evaluate the cost effectiveness ($/MT) of FSP reductions for completed restoration projects and compare to other pollutant load reduction strategies considered to meet the Lake Tahoe TMDL. • Identify and implement any improvements to the SLRT methodology and user guidance and produce SLRTv2. |
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| 09/13/2017 2:40 PM | System | Findings: • Estimates of the average annual FSP load reduction (MT/yr) for seven stream restoration projects in the Upper Truckee River Watershed were completed using SLRT. • A simple accounting method was developed to estimate the urban fraction of the average annual FSP load reduction provided by each restoration effort. • Cumulatively, the estimated potential FSP load reduction is 105 MT/yr should all seven of these restoration efforts be implemented within the UTR watershed as planned, or nearly a 20% reduction in the annual FSP load of the UTR Watershed (assumed to be 521.8 MT/yr,). Over 69% of this cumulative FSP load reduction estimate on the UTR is achieved by floodplain retention, which likely includes a significant contribution of urban-derived FSP. |
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| 09/13/2017 2:40 PM | System | Management Implications: While the cost effectiveness of SEZ restoration actions to achieve pollutant load reductions varied across projects, this analysis does suggest that SEZ restoration is another valid and cost-effective tool in the pollutant load reduction opportunity toolbox for Tahoe Basin managers to reduce pollutant loads to Lake Tahoe. |
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| 09/13/2017 2:40 PM | System | Publications: www.fs.fed.us/PSW/partnerships/tahoescience 2NDNATURE, LLC. 2014. Estimated FSP load reduction of select stream restoration projects in the Upper Truckee River Watershed Lake Tahoe, California. Final Report. Prepared for USFS Pacific Southwest Research Station. March 2014. |