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An at-grade stabilization structure impact on runoff and suspended sediment.

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Title: An at-grade stabilization structure impact on runoff and suspended sediment.
Authors: Minks, K. R.1, Lowery, B.2, Madison, F. W.2, Ruark, M. D.3, Frame, D.4, Stuntebeck, T.5, Komiskey, M.5
Source: Journal of Soil & Water Conservation. Jul/Aug2012, Vol. 67 Issue 4, p237-248. 12p.
Subject Terms: *Agricultural pollution, *Sediment transport, *Soil erosion, *Watersheds, *Water quality, *Landscapes, *Runoff
Abstract: In recent years, agricultural runoff has received more attention as a major contributor to surface water pollution. This is especially true for the unglaciated area of Wisconsin, given this area's steep topography, which makes it highly susceptible to runoff and soilloss. We evaluated the ability of an at-grade stabilization structure (AGSS), designed as a conservation practice to reduce the amount of overland runoff and suspended sediment transported to the surface waters of an agricultural watershed. Eight years of storm and baseflow data collected by the US Geological Survey-Wisconsin Water Science Center on a farm in west central Wisconsin were analyzed for changes in precipitation, storm runoff volume, and suspended sediment concentration before and after installation of an AGSS. The agricultural research site was designed as a paired \¥atershed study in which monitoring stations were installed on the perennial streams draining both control and treatment watersheds. Linear mixed effects model analyses were conducted to determine if any statistically significant changes occurred in the water quality parameters before and after the AGSS was installed. Results indicated no significant changes (p = 0.51) in average event precipitation and runoff volumes before and after installation of the AGSS in either the treatment (NW) or control (SW) watersheds. However, the AGSS did significantly reduce the average suspended sediment concentration in the event runoff water (p = 0.02) in the NW fi·om 972 to 263 mg L-1 · In addition, particle size analyses, using light diffraction techniques, were conducted on soil samples taken from witlun the AGSS and adjacent valley and ridge top to deternline if suspended sediments were being retained within the structure. Statistical analysis revealed a significantly (p < 0.001) larger proportion of clay inside the AGSS (37%) than outside (30%). These results indicate that the AGSS was successful in reducing the amount of suspended sediment transported to nearby surface waters. The cost of an AGSS can range from US$3,500 to US$8,000, depending on size. Thus, these structures provide a cheap and effective means of improving water quality in lughly erosive landscapes. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Soil & Water Conservation is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: An at-grade stabilization structure impact on runoff and suspended sediment.
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  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Minks%2C+K%2E+R%2E%22&quot;&gt;Minks, K. R.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Lowery%2C+B%2E%22&quot;&gt;Lowery, B.&lt;/searchLink&gt;&lt;relatesTo&gt;2&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Madison%2C+F%2E+W%2E%22&quot;&gt;Madison, F. W.&lt;/searchLink&gt;&lt;relatesTo&gt;2&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Ruark%2C+M%2E+D%2E%22&quot;&gt;Ruark, M. D.&lt;/searchLink&gt;&lt;relatesTo&gt;3&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Frame%2C+D%2E%22&quot;&gt;Frame, D.&lt;/searchLink&gt;&lt;relatesTo&gt;4&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Stuntebeck%2C+T%2E%22&quot;&gt;Stuntebeck, T.&lt;/searchLink&gt;&lt;relatesTo&gt;5&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Komiskey%2C+M%2E%22&quot;&gt;Komiskey, M.&lt;/searchLink&gt;&lt;relatesTo&gt;5&lt;/relatesTo&gt;
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  Data: *&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Agricultural+pollution%22&quot;&gt;Agricultural pollution&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Sediment+transport%22&quot;&gt;Sediment transport&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Soil+erosion%22&quot;&gt;Soil erosion&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Watersheds%22&quot;&gt;Watersheds&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Water+quality%22&quot;&gt;Water quality&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Landscapes%22&quot;&gt;Landscapes&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Runoff%22&quot;&gt;Runoff&lt;/searchLink&gt;
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  Label: Abstract
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  Data: In recent years, agricultural runoff has received more attention as a major contributor to surface water pollution. This is especially true for the unglaciated area of Wisconsin, given this area&#39;s steep topography, which makes it highly susceptible to runoff and soilloss. We evaluated the ability of an at-grade stabilization structure (AGSS), designed as a conservation practice to reduce the amount of overland runoff and suspended sediment transported to the surface waters of an agricultural watershed. Eight years of storm and baseflow data collected by the US Geological Survey-Wisconsin Water Science Center on a farm in west central Wisconsin were analyzed for changes in precipitation, storm runoff volume, and suspended sediment concentration before and after installation of an AGSS. The agricultural research site was designed as a paired \&#165;atershed study in which monitoring stations were installed on the perennial streams draining both control and treatment watersheds. Linear mixed effects model analyses were conducted to determine if any statistically significant changes occurred in the water quality parameters before and after the AGSS was installed. Results indicated no significant changes (p = 0.51) in average event precipitation and runoff volumes before and after installation of the AGSS in either the treatment (NW) or control (SW) watersheds. However, the AGSS did significantly reduce the average suspended sediment concentration in the event runoff water (p = 0.02) in the NW fi&#183;om 972 to 263 mg L-1 &#183; In addition, particle size analyses, using light diffraction techniques, were conducted on soil samples taken from witlun the AGSS and adjacent valley and ridge top to deternline if suspended sediments were being retained within the structure. Statistical analysis revealed a significantly (p &lt; 0.001) larger proportion of clay inside the AGSS (37%) than outside (30%). These results indicate that the AGSS was successful in reducing the amount of suspended sediment transported to nearby surface waters. The cost of an AGSS can range from US$3,500 to US$8,000, depending on size. Thus, these structures provide a cheap and effective means of improving water quality in lughly erosive landscapes. [ABSTRACT FROM AUTHOR]
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  Data: &lt;i&gt;Copyright of Journal of Soil &amp; Water Conservation is the property of Taylor &amp; Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.2489/jswc.67.4.237
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 12
        StartPage: 237
    Subjects:
      – SubjectFull: Agricultural pollution
        Type: general
      – SubjectFull: Sediment transport
        Type: general
      – SubjectFull: Soil erosion
        Type: general
      – SubjectFull: Watersheds
        Type: general
      – SubjectFull: Water quality
        Type: general
      – SubjectFull: Landscapes
        Type: general
      – SubjectFull: Runoff
        Type: general
    Titles:
      – TitleFull: An at-grade stabilization structure impact on runoff and suspended sediment.
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            NameFull: Minks, K. R.
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            NameFull: Lowery, B.
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            NameFull: Madison, F. W.
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            NameFull: Ruark, M. D.
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            NameFull: Frame, D.
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              M: 07
              Text: Jul/Aug2012
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              Y: 2012
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              Value: 67
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            – TitleFull: Journal of Soil & Water Conservation
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