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soil_loss_and_sediment_discharge [2022/05/02 17:06] adminsoil_loss_and_sediment_discharge [2026/02/11 15:03] (current) admin
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 Permittees can demonstrate compliance with the sediment discharge standard of 5.0 tons/ac/year in Chapter 14.11(3)(b) by using the Permittees can demonstrate compliance with the sediment discharge standard of 5.0 tons/ac/year in Chapter 14.11(3)(b) by using the
  
-[[https://dnr.wi.gov/topic/stormWater/documents/USLEmodel.zip|Soil Loss & Sediment Discharge Calculation Tool]].+[[https://dnr.wisconsin.gov/sites/default/files/topic/Stormwater/USLEmodel.zip|Soil Loss & Sediment Discharge Calculation Tool]].
  
 This Excel spreadsheet projects soil loss and sediment discharge from a site using the Universal Soil Loss Equation (USLE), based on the timing of land disturbance, restoration, and the implementation of erosion control BMPs.  This Excel spreadsheet projects soil loss and sediment discharge from a site using the Universal Soil Loss Equation (USLE), based on the timing of land disturbance, restoration, and the implementation of erosion control BMPs. 
  
-Note that the spreadsheet estimates soil loss from sheet and rill erosion only. It does not predict soil loss resulting from concentrated flow, slopes steeper than 33%, gully erosion or streambank erosion. If those areas exist on a site, they should be addressed through the use of prescriptive erosion control measures.+Note that the spreadsheet estimates soil loss from sheet and rill erosion only. It does not predict soil loss resulting from concentrated flow, slopes steeper than 33%, gully erosion or streambank erosion. If those areas exist on a site, they should be addressed through the use of [[Prescriptive Compliance]] should be used.
  
-The WDNR has developed a [[https://dnr.wi.gov/water/wsSWIMSDocument.ashx?documentSeqNo=148368553|guidance document]] that describes how to use the USLE spreadsheet and the [[erosion control]] page provides some additional information specific to County erosion control permitting.+The Wisconsin DNR has developed {{ ::dnr_usle_guidance.pdf |Construction Site Soil Loss and Sediment 
 +Discharge Calculation Guidance}} that describes how to use the USLE spreadsheet and the [[erosion control]] page provides some additional information specific to County erosion control permitting.
  
 =====Additional Guidance===== =====Additional Guidance=====
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 ====Soil Disturbing Activities==== ====Soil Disturbing Activities====
-  *To meet the standard, a representative “worst case” slope/slope length should be chosen.  +  *To meet the standard, a representative “worst case” slope/slope length should be chosen and it's characteristics entered as a new "Bare Ground" activity
-  *When a slope and/or slope length is changed by grading during the bare soil period, select another bare soil row under "Activity" and enter its corresponding date. Then enter new slope and/or slope length in the appropriate column(s). This can be used to represent topsoil stripping, followed by mass grading.+  *When a slope and/or slope length is changed by grading during the bare soil period, enter a new bare soil activity and enter its corresponding schedule date. Then enter the new slope and/or slope length in the appropriate column(s). This can be used to represent topsoil stripping, followed by mass grading.
   *While the WDNR guidance states that the USLE spreadsheet should not be used on slopes over 20%, County submittals should include slopes up to 33%.   *While the WDNR guidance states that the USLE spreadsheet should not be used on slopes over 20%, County submittals should include slopes up to 33%.
   *In addition to the USLE calculation, erosion control plans should include a map, clearly showing the location of the flow paths modeled in the spreadsheet(s).   *In addition to the USLE calculation, erosion control plans should include a map, clearly showing the location of the flow paths modeled in the spreadsheet(s).
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 ===References=== ===References===
-  *[[https://dnr.wi.gov/topic/stormWater/documents/USLE.pdf|Wisconsin DNR Construction Site Soil Loss Guidance]] +  *{{ :usle_guidance.pdf |Wisconsin DNR Construction Site Soil Loss Guidance}} 
-  *[[https://dnr.wi.gov/topic/stormWater/documents/USLEmodel.zip|Soil Loss & Sediment Discharge Calculation Tool]]+  *[[https://dnr.wisconsin.gov/sites/default/files/topic/Stormwater/USLEmodel.zip|Soil Loss & Sediment Discharge Calculation Tool]]
  
soil_loss_and_sediment_discharge.1651525587.txt.gz · Last modified: by admin

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