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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>Post-Wildfire Debris Flow</title>
      <link>https://rip.trb.org/View/2427687</link>
      <description><![CDATA[Wildfires have been posing significant problems for many states in the United States in recent years. In addition to the immediate damage and destruction to the natural environment, insurable properties, and public infrastructure, other longer-term risks persist in the post-wildfire condition.  The natural diversity of the watersheds and channels can be compromised due to loss of woody material and vegetation, and soil nutrients and cohesion are diminished in areas of particularly high burn intensity, sometimes resulting in hydrophobic soils.  The post-wildfire condition susceptibility to debris flows and increased erosional patterns can pose significant risks to transportation infrastructure and lead to increased disruption and cost due to road closures and repair/replacement of pavement, subgrade, culverts, and embankment fill.

Although much research has been conducted, and continues to be conducted, on estimating the risks and degree of damage posed by post-wildfire debris flows, the applicability of results is often limited geographically. Results must often be extrapolated to other areas which may not have sufficiently similar characteristics.  For example, data collected and calibrated to the foothills of a temperate grasslands environment may be extrapolated to a canyon environment with a flashy, desert hydrologic pattern, resulting in a poor prediction.  With the increased frequency of these fires, as well as increased risk to life and property in the paths of these types of events, additional effort is warranted to remediate areas prone to post-wildfire debris flows and to reduce damage from future wildfires.

OBJECTIVES: The primary objective of this proposed pooled-fund project is to address post-wildfire debris-flow issues.]]></description>
      <pubDate>Thu, 12 Sep 2024 17:01:35 GMT</pubDate>
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      <title>The Effectiveness of Amendments in Promoting Hydric Soil Conditions in Mitigation Wetlands – Phase II</title>
      <link>https://rip.trb.org/View/1641756</link>
      <description><![CDATA[Wetland mitigation is required by Maryland Department of the Environment (MDE) to offset wetland losses due to development. Wetland creation or restoration can also be initiated to promote beneficial hydrological, biogeochemical, and biological functions or ecosystem services. In order to determine if wetland has been successfully established, hydrologic, vegetation and hydric soil indicators must be met. The three methods to demonstrate hydric soils (α,α’-dipyridyl, IRIS tubes, and redox potential) are all measures of microbially mediated iron-reducing conditions. Iron may be a key process in wetland carbon sequestration (Shimizu et al. 2013) and controlling unwanted nitrous oxide and methane emissions (Huang, Yu, and Gambrell 2009).

In fiscal year 2019, the research team plans to carry out the field experiment that was originally scheduled for 2018. The general approach in field and laboratory experimentation will be to test the effectiveness of four organic matter amendments: #1 wood mulch that meets the MDOT SHA criteria for Type C compost, # 2 cow manure that meets the MDOT SHA criteria for Type A compost, #3 BLOOM a class A biosolid sourced from DC water, and # 4 switchgrass hay. The research team has obtained samples of #1 and #2 from a local contractor. The switchgrass was harvested in October 2018 from the Central Maryland Research and Education Center in Clarksville, Maryland.  After addition of the amendments in field plots, the research team will be monitoring hydric soil indictors (iron-reducing conditions) using the three standard methods listed previously. Additionally, groundwater levels will be monitored in all plots. The research team will also measure microbial growth and respiration to determine the fate of carbon and nitrogen.]]></description>
      <pubDate>Thu, 01 Aug 2019 09:21:46 GMT</pubDate>
      <guid>https://rip.trb.org/View/1641756</guid>
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    <item>
      <title>RES2019-04: Advancing Urban Stream Restoration/Enhancement Practices for Compensatory Mitigation Credits</title>
      <link>https://rip.trb.org/View/1632576</link>
      <description><![CDATA[The purpose of the project are to: 1) improve ecohydraulic design methodologies for urban stream restoration/enhancement that are more cost effective, 2) construct a stream restoration project in Knox County in order to assess improved design protocols to maximize functional lift calculations in the Tennessee Stream Quantitative Tool (TN-SQT) and assess the economics of project implementation in urban streams for compensatory mitigation, and 3) provide a training course for TDOT staff on the new design methods for urban stream restoration and the input requirements for the TN-SQT.The following are expected outcomes of this research project:
•	Improving urban stream restoration design approaches that are also cost-effective.
•	Demonstrating the expected gain in functional lift from urban stream restoration/enhancement projects, creating new mitigation credit markets.

]]></description>
      <pubDate>Tue, 02 Jul 2019 10:33:43 GMT</pubDate>
      <guid>https://rip.trb.org/View/1632576</guid>
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      <title>Stream Restoration Video</title>
      <link>https://rip.trb.org/View/1227421</link>
      <description><![CDATA[No summary provided.]]></description>
      <pubDate>Thu, 03 Jan 2013 12:59:01 GMT</pubDate>
      <guid>https://rip.trb.org/View/1227421</guid>
    </item>
    <item>
      <title>Study of Alternative Strategies in Stream Restoration</title>
      <link>https://rip.trb.org/View/1227420</link>
      <description><![CDATA[No summary provided.]]></description>
      <pubDate>Thu, 03 Jan 2013 12:58:59 GMT</pubDate>
      <guid>https://rip.trb.org/View/1227420</guid>
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