Natural Resource Management GIS Applications · Natural Resource Management GIS Applications Ben...
Transcript of Natural Resource Management GIS Applications · Natural Resource Management GIS Applications Ben...
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US Army Corps of EngineersBUILDING STRONG®
Natural Resource ManagementGIS ApplicationsBen Silvernail IWR20 April, 2017
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BUILDING STRONG®
Geographic Information Systems (GIS) Utility
Collect Data Manage Data Join Data Process &
Analyze Data
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Spatial Data Collection
Field GPS►Appropriate grade►Plan what is to be mapped►Develop and import geodatabase►Log points or stream data for lines/polygons
*Planning and preparation are key!
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Geodatabase
Spatial Data CollectionPoints
Polylines
Polygons
Tables
Raster Datasets
Toolboxes
Layer Files
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Geodatabase
Spatial Data Collection• Features in a geodatabase will share a common
coordinate system.
• Database properties can be used to standardize common attributes pertaining to different feature classes.
• A developed schema can be imported or exported.
• Relationships between feature classes, tables can be stored.
• Representations of layers can be stored for consistent display.
• Can add address locator functionality.
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Pine Flat Lake, SPK
Black Butte Lake, SPK
Success Lake, SPK
Eastman Lake, SPK
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Spatial Data Collection
Examples of attributes collected in the field►Feature names and identifiers►Feature descriptions►Road material, width, striping►Building type►Fishing feature type►Marina ownership►Plus more…
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Spatial Data Management
Organize Standardize Evaluate Edit Share Describe
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Spatial Data Management
Demonstration of recreation boundary inventory
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Spatial Data Management - Metadata
Metadata creation/editing example
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Relational Data GIS is based on relational databases – with addition of
location information
Key fields (a.k.a. primary keys) are used to link information from one table to another
OMBIL/EDW, external sources
Spatial joins
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Relational Data
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Projects
Key Field
Campsites by Project
Boat Ramps by Project
Hiking Trail Miles by Project
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Relational Data
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Key Field
Districts Boat Ramps by District
Campsites by District Hiking Miles by District
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Processing Data
Query by location Reclassification Conversion Overlays Statistical calculations
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Processing Data – Spatial Query
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Processing Data – Reclassification
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Processing Data – Conversion & Raster Calculator
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Processing Data – Overlays
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Processing Data – Overlays
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Processing Data
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Analysis
Evaluate geoprocessing output Check for bias Index development Information vs Data
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II. I.
IV. III.Threats
Significance
I. High Threat/ High Significance
Action item Scale
Boundary survey•Correct errors•Find/reset corner monuments•Establish line
Annual requirement due to high number of adjacent landowners.
Boundary inspection•Visual on-site inspection•Aerial recon if topo and vegallow
Continual, ongoing work. Inspect entire boundary each year.
Boundary maintenance•Construct/repair fence/vehicle barriers•Replace signs/markers•Clear line of sight
One third of boundary needs routine maintenance every year.
Resolve encroachments•RE and OD costs to process and negotiate settlement of major and minor encroachments
An annual, recurring requirement to resolve major and minor encroachments
IV. Low Threat/ Low Significance
Action item Scale
Boundary survey Some survey work required onceevery 5-6 years
Boundary inspection Inspect 20% of boundary each year
Boundary maintenance Maintain 10% of boundary each year
Resolve encroachments Major encroachments rarely occur. Minor encroachments occur every 2-3 years.
Boundary Index
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Questions?
Ben SilvernailSocial ScientistUSACE Institute for Water [email protected]