Parent Layer: Greater Blue Earth River Basin

Name: GBER_bluffs

Display Field: aspect

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Bluffs were initally identified on a 3m resolution digital elevation model as areas that had more than 3m of relief within a 9x9m square. Features or portions of features were removed from the dataset until only bluffs adjacent to the modern channel remained. The following is a description of the fields in this shapefile's attribute table:Migration NDSU-summarized channel migration at the bluff toe (m/a). For this column, zeroes are null.Retreat NDSU-measured bluff crest retreat (m/a) 9999=null, zeroes are real valuesErate bluff erosion rate “E,” calculated from measured migration and retreat (m/a) = ((2*retreat)+migration)/4Height relief on Patrick’s GBER 3m DEM within the bluff polygon. (m)arcMapA map area, as calculated by arc (m^2)SA_AtanTht surface area (vertical), (m^2) = Area*tan(meanSlope)mean Slope (degrees)Aspect aspect binned into 8 groupsVegComb10 0 = bare in 2010 NAIP aerial photos1 = vegetated in 2010 aerial photosprobVeg the proportion of bluff surface area that is vegetated with in a circle of 3km radius of each bluffPrk 0 = no Steenberg et al., 2012 mapped bedrock outcrop on bluff (Prk = Paleozoic Rock)1 = MGS mapped bedrock outcrop on bluffHal 0 = no Belmont et al., 2011 mapped Holocene alluvium on bluff1 = Belmont et al., 2011 mapped Holocene alluvium on bluffPal 0 = no Jennings et al., 2012 mapped Pleistocene alluvium on bluff1 = Jennings mapped Pleistocene alluvium on bluffFPtrap 0 = no bluff sediment trapped on floodplain. Based on subwatershed and Belmont 2011.1= bluff sediment trapped on floodplainautoTEmeas “trapping efficiency” (%) the percentage of bluff sediment trapped in downstream lakes, based on NHDlakes, DNR bathymetry, and the middle curve (0.1) from Brown, 1943.Watershed Blue Earth, Watonwan or Le SueurSubwatershed a subwatershed delineationBudget_rate a broader subwatershed delineationEcode 1 = measured E2 = E interpolated from the average of the rates measured within a 3km radius3 = E extrapolated from GBER, subwatershed, or with consideration of vegetation Einterp E, for bluffs with interpolated EEextrapAll E, the average subwatershed bluff erosion rateVeMeas Volume eroded, (m^3/a) on bluffs with measured EVe all Volume eroded. (m^3/a) extents not trimmed, Prk included, veg extrapolation, interpolationVe all_Veg Volume eroded with vegetation-specific extrapolation. (m^3/a) extents trimmed, Prk included, veg extrapolation, interpolationLoad_pTex Load, (Mg/a) nostorage, bedrock included. Calculated with variable mud mass/volume of sediment eroded based on mapped Quaternary alluvium.loadTrap Load, (Mg/a) storage of bluff sediments on floodplains and in lakes, bedrock included. Calculated with variable mud mass/volume of sediment eroded based on mapped Quaternary alluvium.

Copyright Text: Martin Bevis (bevisma@gmail.com) Karen Gran (kgran@d.umn.edu) Andrea Johnson Stephanie Day

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YMin: 4817938.0
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Spatial Reference: 26915  (26915)  LatestVCSWkid(0)

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Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• Migration ( type: esriFieldTypeDouble, alias: Migration )
• Retreat ( type: esriFieldTypeDouble, alias: Retreat )
• Erate ( type: esriFieldTypeDouble, alias: Erate )
• height_m ( type: esriFieldTypeDouble, alias: height_m )
• arcMapA ( type: esriFieldTypeInteger, alias: arcMapA )
• SA_AtanTht ( type: esriFieldTypeInteger, alias: SA_AtanTht )
• L_AtanThta ( type: esriFieldTypeInteger, alias: L_AtanThta )
• mean_Slope ( type: esriFieldTypeInteger, alias: mean_Slope )
• aspect ( type: esriFieldTypeString, alias: aspect, length: 254 )
• VegComb10 ( type: esriFieldTypeInteger, alias: VegComb10 )
• probVeg ( type: esriFieldTypeDouble, alias: probVeg )
• Prk ( type: esriFieldTypeInteger, alias: Prk )
• Hal ( type: esriFieldTypeInteger, alias: Hal )
• Pal ( type: esriFieldTypeInteger, alias: Pal )
• FPtrap ( type: esriFieldTypeInteger, alias: FPtrap )
• autoTEmeas ( type: esriFieldTypeInteger, alias: autoTEmeas )
• Watershed ( type: esriFieldTypeString, alias: Watershed, length: 254 )
• subwatersh ( type: esriFieldTypeString, alias: subwatersh, length: 254 )
• budget_rat ( type: esriFieldTypeString, alias: budget_rat, length: 254 )
• Ecode ( type: esriFieldTypeInteger, alias: Ecode )
• Einterp ( type: esriFieldTypeDouble, alias: Einterp )
• EextrapAll ( type: esriFieldTypeDouble, alias: EextrapAll )
• VeMeas ( type: esriFieldTypeInteger, alias: VeMeas )
• VeAll ( type: esriFieldTypeInteger, alias: VeAll )
• VeAll_Veg ( type: esriFieldTypeInteger, alias: VeAll_Veg )
• Load_pTex ( type: esriFieldTypeInteger, alias: Load_pTex )
• loadTrap ( type: esriFieldTypeInteger, alias: loadTrap )
• Shape_Length ( type: esriFieldTypeDouble, alias: Shape_Length )
• Shape_Area ( type: esriFieldTypeDouble, alias: Shape_Area )

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