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Overview
Basics
Basics
This research integrated a number of reliable and cost-effective stormwater monitoring techniques with existing stormwater management tools1 customized for the TMDL program to directly improve the quantitative estimates of the water quality benefits of key urban stormwater management practices. The research focused on two priority research and management objectives: 1. Provide the first set of comprehensive data to validate PLRM catchment-scale estimates of pollutant loading and runoff using observed water quality and hydrologic data & 2. Quantify the effectiveness and feasibility of improved road maintenance practices to reduce urban catchment pollutant loads.
Completed
2010
2011
2014
$360,342
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
04.01.01.0061 - P071: Quantifying the Benefits of Urban Stormwater Management
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
$360,342
$360,342
$0
| Total | |||
|---|---|---|---|
| Unknown or Unassigned | $360,342 | $360,342 | $0 |
| Grand Total | $360,342 | $360,342 | $0 |
Reported Expenditures
Reported Expenditures
| Total | 2014 | 2013 | 2012 | 2011 | 2010 | |
|---|---|---|---|---|---|---|
| Southern Nevada Public Land Management Act (Pacifi... | $360,342 | $72,068 | $72,069 | $72,069 | $72,068 | $72,068 |
| Grand Total | $360,342 | $72,068 | $72,069 | $72,069 | $72,068 | $72,068 |
Photos
Other Details
Watersheds
No watersheds set for this project.
Threshold Categories
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The condition of stormwater infrastructure and roads is known to vary temporally and these variations affect pollutant load generation and control. These stormwater management tools are critical components of the Lake Tahoe TMDL and are the means by which the benefits of urban stormwater management is and will continue to be quantified in the Tahoe 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
Notes
Notes
| 08/28/2017 9:31 PM | System | Objectives: • Obtain and report reliable seasonal and annual urban catchment fine sediment particle (FSP) loads that can compared across outfalls and allow detection of decreasing trends in urban pollutant loading as a result of effective management actions, should they exist. • Identify the role and potential format of meteorological datasets when interpreting measured data. • Standardize catchment outfall water quality monitoring and reporting. • Document and test the influence that road practices and associated road conditions have on urban catchment FSP loading. • Generate comparable Pollutant Load Reduction Model (PLRM) estimates for the site and time period monitored to improve PLRM model development guidance, inform potential future PLRM improvements, and refine the expectations and limitations of comparing measured and modeled stormwater pollutant loading datasets. |
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| 08/28/2017 9:31 PM | System | Findings: • A series of data and information were used to document the runoff volumes and FSP pollutant loading from 3 urban catchments, evaluate the influence of changing road conditions on these pollutant loads, and build representative PLRM models to compare to the measured water quality datasets. Three urban catchment outfalls were selected, instrumented and monitored for one complete year (March 1, 2012 to February 28, 2013). • This research developed a standardized and consistent annual summary format and template to synthesize the results of a year of catchment outfall water quality monitoring at a single site. The template provides a number of volume and pollutant load metrics normalized by catchment characteristics (catchment area, impervious area, etc.) to allow direct comparisons of measured data across sites. • Available turbidity to FSP rating curves developed using thousands of paired samples obtained in the Tahoe Basin were used to consistently convert 10 min turbidity data to FSP concentrations. • PLRM is a water quality planning tool designed to predict average annual runoff volumes and pollutant loads for use by Tahoe stormwater engineers and managers. The results of the model calibration exercise and comparison to measured pollutant loads suggest that PLRM models can perform reasonably well on the seasonal and annual time scales, as intended based on the objectives of the model design. However, the model’s predicted runoff volumes and pollutant loads can have notable discrepancies with the measured data at the event time scale. |
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| 08/28/2017 9:30 PM | System | Management Implications: • A variety of treatment Best Management Practice (BMP) types are constructed within Tahoe urban catchments to provide significant pollutant load reductions to Lake Tahoe. BMP Road Assessment Methodology (RAM) can be used to rapidly evaluate and track the relative condition of the larger scale treatment BMPs within the urban catchment over time. • The tools developed in the course of this study have direct application for evaluating catchment effectiveness for fine sediment retention, road maintenance effectiveness, and FSP related BMP effectiveness. |
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| 08/28/2017 9:30 PM | System | Publications: www.fs.fed.us/PSW/partnerships/tahoescience 2NDNATURE and Northwest Hydraulic Consultants. 2014. Catchment-Scale Evaluation of Tahoe Stormwater Tools. Final Technical Report. Prepared for USFS Pacific Southwest Research Station. June 2014. |