OGIC Soils FIT

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OGIC Soils FIT
Statewide Soils Dataset Status

• 11/5/2014

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OGIC Soils FIT Progress 2014

• April
• Convened OR Soils FIT.
• NRCS provides status of SSURGO.
• NRCS proposes SSURGO/STATSGO merge to provide
  interim statewide layer.
• September
• SSURGO and STATSGO similarities and differences.
• Presented data viewing and report generation
  options.
• NRCS to prepare SSURGO/STATSGO data set for FIT
  review.
• 9/22 - GEO hosts merged draft dataset.
• October
• Presentation of statewide merged dataset to FIT.
• Statewide map examples.
• Metadata, data element review.
• 10/27 second draft uploaded.

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Soils FIT Next Steps

• Soils FIT reviews current STATSGO/SSURGO product.
• Determines if additional data elements need to
  be added to the current attribute table.
• Based on feedback from the workgroup and from the
  forum, the framework soils dataset may be
  modified.
• The plan is to certify the data standard at the
  spring OGIC forum.

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National Cooperative Soil Survey Data Products

• SSURGO - information collected at scales of
  112,000 to 163,360. Mostly 124,000 in Oregon.
• STATSGO2 commonly called the General Soil Map
  of the United States. Broad-based inventory of
  soils at a scale of 1250,000.

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Sources for Oregon Statewide Soil Survey Dataset
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Oregon Statewide Soil Survey Dataset Products

• Spatial Data File geodatabase with soil map
  unit polygons from SSURGO, with STATSGO polygons
  where SSURGO is not available
• Tabular Data Microsoft Access database with
  attributes for all SSURGO and STATSGO map units
  in the spatial data. SSURGO and STATSGO use
  identical tabular data structure.

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Soil Data HierarchyNumerous One to Many
RelationshipsLegend gt Map Unit gt Components gt
Horizons
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Soil map unit on a mound intermound landform
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Dominant Component vs. Dominant Condition
Aggregation Method
Example Soil Map Unit Alpha-Beta-Gamma
complex, 5 to 20 percent slopes
Component Percent of Map Unit Land Capability Class - NIRR
Alpha 40 2
Beta 35 3
Gamma 25 3
Dominant Component Land Capability Class 2
(40)
Dominant Condition Land Capability Class 3
(35 25 60)
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The mapunit and muaggatt tables can be joined
directly to the spatial data using the mukey
field in both.
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Create Farmland Class map with mapunit table
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The mapunit and muaggatt tables can be joined
directly to the spatial data using the mukey
field in both.
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Create Nonirrigated land capability class
(dominant condition) map with muaggatt table
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