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Overview
Basics
Basics
Develop, verify and document site specific fine sediment monitoring protocols to quantify and predict the sediment load reductions as a result of stream restoration projects and improve the Basin-wide empirical relationships between fine particles (<63 um and <20 um) and total suspended sediment loads.
Completed
2007
2007
2011
$112,805
Maggie Mathias (maggie@2ndnaturellc.com)
09/21/2017
09/21/2017
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| Location Information | Location Notes |
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Organizations
Organizations
EIP Details
EIP Basics
EIP Basics
04.01.01.0057 - P004: Methodology to Predict Fine Sediment Load Reductions as a Result of Floodplain Inundation in Lake Tahoe Streams
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
$112,805
$112,805
$0
| Total | |||
|---|---|---|---|
| Unknown or Unassigned | $112,805 | $112,805 | $0 |
| Grand Total | $112,805 | $112,805 | $0 |
Reported Expenditures
Reported Expenditures
| Total | 2011 | 2010 | 2009 | 2008 | 2007 | |
|---|---|---|---|---|---|---|
| Southern Nevada Public Land Management Act (Pacifi... | $112,805 | $22,561 | $22,561 | $22,561 | $22,561 | $22,561 |
| Grand Total | $112,805 | $22,561 | $22,561 | $22,561 | $22,561 | $22,561 |
Photos
Other Details
Watersheds
No watersheds set for this project.
Threshold Categories
-
Resource managers need tools to quantify the water quality benefits of stream environment zone (SEZ) restoration efforts in a manner comparable to and consistent with the stormwater quality load reduction tools that have been developed to support the Lake Tahoe Total Maximum Daily Load.
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
| 09/06/2017 5:19 PM | System | Objectives: It is assumed that stream environment zone (SEZ) restoration actions that increase the frequency and duration of overbank flow events may result in substantial removal of the pollutants of concern, particularly fine sediment particles (FSP <16 µm), yet to date an accepted method for estimation and supporting data do not exist. The research herein provides a cost-effective data collection and analysis technique that quantifies the fine sediment particle load reductions as a result of floodplain inundation, and this analysis shows that stream restoration is a potentially significant FSP load reduction opportunity. |
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| 09/06/2017 5:18 PM | System | Findings: • The estimated FSP load reduction as a result of restoration (?FSP) is estimated to be 0.8 MT and 36.5 MT for spring snowmelts 2009 and 2010, respectively. • A precipitation frequency analysis suggests WY09 and WY10 were average total precipitation years, yielding an estimated average annual FSP load reduction due to increased floodplain retention of 18 MT/yr, or 2.1 x 1018 particles/yr, if the 4/5L restoration plans are implemented. • This research provides evidence that FSP (fine sediment particles) retention by floodplains does occur and may provide a significant FSP load reduction during overbank flow events. |
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| 09/06/2017 5:15 PM | System | Management Implications: • Resource managers need tools to quantify the water quality benefits of SEZ restoration efforts in a manner comparable to and consistent with the stormwater quality load reduction tools that have been developed to support the Lake Tahoe Total Maximum Daily Load (Lahontan Regional Water Quality Control Board [LRWQCB] and Nevada Division of Environmental Protection [NDEP] 2010) and Lake Clarity Crediting Program (LRWQCB and NDEP 2009). • This research provides evidence that FSP retention by floodplains does occur and may provide a significant FSP load reduction during overbank flow events. However, the load reduction estimates provided are not yet directly comparable to an estimate of load reductions achievable by stream restoration for Tahoe streams. The data from one floodplain over three water years is limited in both its spatial and temporal resolution; however it is a site-specific and representative dataset, which is very challenging to obtain given the infrequency of overbank flow events. • Upcoming research will explore methods to integrate both site-specific and readily available regional data with critical geomorphic and FSP fate and transport principles and to provide resource managers with a reasonable approach to consistently predict the FSP load reduction expected from stream restoration actions in the Tahoe Basin. |
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| 09/06/2017 5:14 PM | System | Publications: www.fs.fed.us/PSW/partnerships/tahoescience |