| snippet:
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Stream Management Corridors (SMCs) within the Mile High Flood District (MHFD) Boundary. SMC boundaries are a rough estimate of the space needed for a highly functional stream design and reduced maintenance expense. |
| summary:
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Stream Management Corridors (SMCs) within the Mile High Flood District (MHFD) Boundary. SMC boundaries are a rough estimate of the space needed for a highly functional stream design and reduced maintenance expense. |
| extent:
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[[-105.345447007898,39.3785356472854],[-104.436904953641,40.1516086827971]] |
| accessInformation:
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MHFD, River Works
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| thumbnail:
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thumbnail/thumbnail.png |
| maxScale:
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1.7976931348623157E308 |
| typeKeywords:
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["ArcGIS","ArcGIS Server","Data","Map Service","Service"] |
| description:
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<div style='border:0px; font-variant-numeric:inherit; font-variant-east-asian:inherit; font-variant-alternates:inherit; font-variant-position:inherit; font-stretch:inherit; font-size-adjust:inherit; font-kerning:inherit; font-feature-settings:inherit; margin:0px; padding:0px;'><font color='#000000' face='Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif' size='5'>Internal Use Only</font></div><div style='border:0px; font-variant-numeric:inherit; font-variant-east-asian:inherit; font-variant-alternates:inherit; font-variant-position:inherit; font-stretch:inherit; font-family:Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size-adjust:inherit; font-kerning:inherit; font-feature-settings:inherit; margin:0px; padding:0px; color:rgb(0, 0, 0) !important;'><b><font size='5'>Layers:</font></b></div><div style='border:0px; font-variant-numeric:inherit; font-variant-east-asian:inherit; font-variant-alternates:inherit; font-variant-position:inherit; font-stretch:inherit; font-family:Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size-adjust:inherit; font-kerning:inherit; font-feature-settings:inherit; margin:0px; padding:0px; color:rgb(0, 0, 0) !important;'><font size='3'><b>SMCs (updated) - </b>A </font><span style='font-size:medium;'>floodplain-based regression analysis SMC. </span><span style='font-size:medium;'>MHFD staff have identified SMCs on the eastern and western side of the District’s service area where the shear stress-based approach has resulted in unrealistic SMC widths. To address this problem, MHFD revised the SMCs using floodplain-based regression analysis. </span></div><div style='border:0px; font-variant-numeric:inherit; font-variant-east-asian:inherit; font-variant-alternates:inherit; font-variant-position:inherit; font-stretch:inherit; font-family:Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size-adjust:inherit; font-kerning:inherit; font-feature-settings:inherit; margin:0px; padding:0px; color:rgb(0, 0, 0) !important;'><span style='font-size:medium;'><b>Percent Change</b> - </span><span style='font-size:medium;'>A comparison dataset shows the increase or decrease in SMC widths between legacy SMCs and revised</span></div><div style='border:0px; font-variant-numeric:inherit; font-variant-east-asian:inherit; font-variant-alternates:inherit; font-variant-position:inherit; font-stretch:inherit; font-family:Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size-adjust:inherit; font-kerning:inherit; font-feature-settings:inherit; margin:0px; padding:0px; color:rgb(0, 0, 0) !important;'><span style='font-size:medium;'><br /></span></div><div style='border:0px; font-variant-numeric:inherit; font-variant-east-asian:inherit; font-variant-alternates:inherit; font-variant-position:inherit; font-stretch:inherit; font-family:Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size-adjust:inherit; font-kerning:inherit; font-feature-settings:inherit; margin:0px; padding:0px; color:rgb(0, 0, 0) !important;'><font size='3'>Note this dataset revised </font><a href='https://mhfd.maps.arcgis.com/home/item.html?id=a84967309d104b579c67c12647cb1328' target='_blank' rel='nofollow ugc noopener noreferrer'>MHFD's previously released SMC layer</a><font size='3'>. </font></div> |
| licenseInfo:
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<div style='border:0px; font-variant-numeric:inherit; font-variant-east-asian:inherit; font-variant-alternates:inherit; font-variant-position:inherit; font-stretch:inherit; font-size:11pt; font-family:Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size-adjust:inherit; font-kerning:inherit; font-feature-settings:inherit; margin:0px; padding:0px; color:rgb(0, 0, 0) !important;'>The regression-based SMCs included in this dataset are used to describe approximate and continuous relationships between watershed area and floodplain width. These are intended to be a starting point for planning purposes only, with refinement occurring through project design. </div><div style='border:0px; font-variant-numeric:inherit; font-variant-east-asian:inherit; font-variant-alternates:inherit; font-variant-position:inherit; font-stretch:inherit; font-size:11pt; font-family:Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size-adjust:inherit; font-kerning:inherit; font-feature-settings:inherit; margin:0px; padding:0px; color:rgb(0, 0, 0) !important;'><br /></div><div style='border:0px; font-variant-numeric:inherit; font-variant-east-asian:inherit; font-variant-alternates:inherit; font-variant-position:inherit; font-stretch:inherit; font-size:11pt; font-family:Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size-adjust:inherit; font-kerning:inherit; font-feature-settings:inherit; margin:0px; padding:0px; color:rgb(0, 0, 0) !important;'>The regression relationships are based on watershed specific floodplain (valley bottom) data; however, given the approach, they will not account for human-made structures or local geomorphic variability. They are not to be construed or used as a regulatory tool. Further, floodplain and valley bottom widths within urban areas that reflect the broader geomorphic floodplain are inherently difficult to ascertain; therefore, the linkage between topographic data and floodplain widths in channelized streams is limited and will require refinement over time.</div> |
| catalogPath:
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| title:
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SMCs_Update2024 (Internal Use Only) |
| type:
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Map Service |
| url:
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|
| tags:
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["stream management corridors","smcs"] |
| culture:
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en-US |
| portalUrl:
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| name:
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SMCs_Update2024 |
| guid:
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45F63C37-A198-455C-9386-B77F7135A595 |
| minScale:
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0 |
| spatialReference:
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NAD83(2011) / Colorado Central (ftUS) |