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{{alert|This page is an edit and testing page use by the wiki authors. It is not a content page for the Manual. Information on this page may not be accurate and should not be used as guidance in managing stormwater.|alert-danger}} | {{alert|This page is an edit and testing page use by the wiki authors. It is not a content page for the Manual. Information on this page may not be accurate and should not be used as guidance in managing stormwater.|alert-danger}} | ||
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− | + | ==Recommendations for snow storage== | |
− | *Identify receiving waters and assess the risk to them. Potential receiving waters include the following. | + | This section provides guidance and recommendations for identifying appropriate snow storage areas, storing snow in those areas, and operations and maintenance of snow storage areas. |
+ | |||
+ | ===Siting recommendations=== | ||
+ | <div style="float:right"> | ||
+ | <table class="infobox" style="border:3px; border-style:solid; border-color:#FF0000; text-align: right; width: 300px; font-size: 100%"> | ||
+ | <tr> | ||
+ | <th><center><font size=3>'''Methods for identifying baseflow contribution'''</font size></center></th> | ||
+ | </tr> | ||
+ | <tr> | ||
+ | <td> | ||
+ | *Consult local groundwater maps and/or reports if they are available. Examples includes a County geologic atlas. This method is easy to use and reasonably accurate in most cases. | ||
+ | *Compare water table (groundwater) elevations to surface water elevations. This method is relatively easy to use if groundwater elevation data exists, but it is subject to inaccuracies as water levels fluctuate. | ||
+ | *Utilize existing reports from local studies. Examples include using information from remediation studies. These reports are reasonably accurate if the study was conducted near the receiving water. | ||
+ | *Baseflow separation methods are accurate but data intensive unless monitoring data exist for the receiving water. [https://www.youtube.com/watch?v=w7E0B7MVZXs Link here for a video on computing baseflow using baseflow separation.] | ||
+ | </td> | ||
+ | </tr> | ||
+ | </table> | ||
+ | </div> | ||
+ | |||
+ | *Identify receiving waters and assess the risk to them. Although identifying the contribution of baseflow to receiving waters can be challenging, it is important if meltwater will infiltrate and recharge groundwater. Potential receiving waters include the following. | ||
**Streams and rivers with a significant baseflow component | **Streams and rivers with a significant baseflow component | ||
**Streams and rivers with low baseflow component | **Streams and rivers with low baseflow component | ||
− | **Lakes with a baseflow component | + | **Lakes and wetlands with a baseflow component |
− | **Lakes with limited baseflow | + | **Lakes and wetlands with limited baseflow |
**Groundwater | **Groundwater | ||
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*Consult with your local community or municipality for technical guidelines on snow site management and operations. | *Consult with your local community or municipality for technical guidelines on snow site management and operations. | ||
*Estimate how much snow disposal capacity is needed for the season so that an adequate number of disposal sites can be selected and prepared. Plan on snow storage capacity equal to 20-30 percent of the snow volume from the source area. | *Estimate how much snow disposal capacity is needed for the season so that an adequate number of disposal sites can be selected and prepared. Plan on snow storage capacity equal to 20-30 percent of the snow volume from the source area. | ||
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**Preference is for storage on permeable material that meets typical stormwater design standards found in the Minnesota Stormwater Manual (e.g. 3 feet separation to seasonal high water table) | **Preference is for storage on permeable material that meets typical stormwater design standards found in the Minnesota Stormwater Manual (e.g. 3 feet separation to seasonal high water table) | ||
− | Site recommendations | + | ===Site recommendations=== |
*Storage | *Storage | ||
**Snow should not be stored in stormwater treatment BMPs. | **Snow should not be stored in stormwater treatment BMPs. | ||
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**Sites which do not drain to treatment BMP should be contained by a snow fence, filter berm, small detention basin and buffer zone ( between the filter berm and storm sewer). An example of such a site might be a gravel parking lot which has sewer drainage. | **Sites which do not drain to treatment BMP should be contained by a snow fence, filter berm, small detention basin and buffer zone ( between the filter berm and storm sewer). An example of such a site might be a gravel parking lot which has sewer drainage. | ||
− | Inspection and maintenance | + | ===Inspection and maintenance=== |
*Before and after winter, clean the designated snow storage area of accumulated sand, trash, and debris, and inspect any associated drainage outlets or conveyance facilities for damage or erosion. | *Before and after winter, clean the designated snow storage area of accumulated sand, trash, and debris, and inspect any associated drainage outlets or conveyance facilities for damage or erosion. | ||
*Before and after winter, repair any damage or erosion that may have occurred to the snow storage area from snow removal equipment or other snow storage activities. | *Before and after winter, repair any damage or erosion that may have occurred to the snow storage area from snow removal equipment or other snow storage activities. |
This section provides guidance and recommendations for identifying appropriate snow storage areas, storing snow in those areas, and operations and maintenance of snow storage areas.
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