partnership to acquire interferometric synthetic aperture radar (ifsar) incorporating digital...
TRANSCRIPT
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Partnership to Acquire Interferometric Synthetic Aperture Radar (IFSAR)
Incorporating Digital Terrain Models Into Natural Resource Assessment
Joe BrennanSoil Scientist (GIS Specialist)USDA-NRCSNorth Dakota Soils Staff
Dr. Rebecca PhillipsPlant PhysiologistUSDA-ARSNorthern Great Plains Research Laboratory
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Elevation Technology Background
Digital Elevation Models (DEM) or Digital Terrain Models (DTM)
Series of Coordinates
Elevation Values
Surface Representation
Terrain Model
What is a DEM?
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Elevation Technology Background
Existing Technology - USGS Digital Elevation Models
6000 feet
30 meter DEMElevation Coordinates – 100 foot Spacing
Data Widely Available
Variable Elevation Accuracy – 5 -15 meter
Available FreeVery Limited Potential forResource Assessment
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Elevation Technology Background
Existing Technology - USGS Digital Elevation Models
10 meter DEMElevation Coordinates – 33 foot Spacing
20% Coverage in North Dakota
Variable Elevation Accuracy – 5-7 meter
$10 – 20/sq mi
6000 feet
Improved Potential forResource Assessment
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Elevation Technology Background
Emerging Technology - LiDAR
1 meter DEMElevation Coordinates – 2.5 foot Spacing
Walsh County, Fargo, Sheyenne R. Floodplain
High Elevation Accuracy – As low as 6 in.
Price $100-600/sq mi.
6000 feet
Limitless Potential forResource Assessment
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Elevation Technology Background
Emerging Technology - IFSAR
5 meter DEMElevation Coordinates – 16 foot Spacing
California, New Mexico, South Dakota, Texas, Wyoming
High Elevation Accuracy – 1 meter (or less)
Price $11.27/sq mi. (NRCS Price)
6000 feet
Most Cost Effective
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Remote Wetland Assessment
Source: SPOT, August 2003
0 300150
Meters
Scale= 1:75,000
Vegetation Zones
Marsh
Transition Zone
Open Water
Anthropogenic
< 30 meters Buffer
Low Prairie / Range
Vegetation Zones
Deep Marsh
Shallow Marsh
Open Water
Anthropogenic
Low Prairie / Range
Wet Meadow
For the purpose of assessing the spatial extent of wetland vegetation communities
Missouri Coteau Prairie Glacial Basins
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Remote Wetland AssessmentMissouri Coteau Prairie Glacial Basins
Cities
Rivers
Area of Interest
Missouri Coteau (Ducks Unlimited, 2003)
National Wetlands Inventory (1980’s) http://wetlands.fws.gov/mapcodes.htm
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Remote Wetland AssessmentMissouri Coteau Prairie Glacial Basins
20022003
2004
Year-to-Year Variability in Water Persistence
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Remote Wetland AssessmentMissouri Coteau Prairie Glacial Basins
0%
1%
2%
3%
4%
5%
6%
7%
8%
9%
10%
2002 2003 2004Year
Semi-Permanent
Seasonal
Temporary
Total
Landscape Water Coverage
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Remote Wetland AssessmentMissouri Coteau Prairie Glacial Basins
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Remote Wetland Assessment
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Soil-Landscape ModelingMissouri Coteau, MLRA 53B
Existing Soil Survey Information Expert Knowledge
DEM (IFSAR) Derived LayersSSURGO Experienced Soil Scientists
Terrain Analysis
GIS
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Soil-Landscape ModelingMLRA 53B Terrain Analysis Project
Repeatable ModelTerrain Criteria 1
Profile Position = Backslope
Terrain Criteria 3
Slope = 3 – 6%
Terrain Criteria 2
Slope Shape = Linear (Across or Down)
Williams Soil Series3 – 6% Slopes
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Soil-Landscape ModelingMLRA 53B Terrain Analysis Project
Output – Soil Landscape Relationship
Williams Soil Series3 – 6% Slopes
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NRCS Field Office Applications of IFSAR
Engineering Applications
Pipelines
Grassed Waterways
Dugouts/Ponds
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NRCS Field Office Applications of IFSAR
WetlandDeterminations (Landscape Position)
Violations (Constructed Drains)
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NRCS Field Office Applications of IFSAR
RUSLE2
Slope Gradient, Slope Length
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NRCS Field Office Applications of IFSAR
Watershed Management
3 Dimensional Conservation Planning
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Proposal to Acquire IFSAR
x $3.92 per square mile ARS Uplift (+35%)ARS Uplift Area = 1297 square miles
ARS Uplift: $5,123
3892 square milesx $11.27 per square mile
Price Subtotal: $43,863
Vendor Quote
NRCS Cost Share: $24,493
Total Cost: $48,986
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