maps and tools for level 1 wetland analysis · 2019-02-12 · 1980 2017 problems with older nwi •...
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Map Sites/Regions Groups
PolygonsPresence/absenceClass types/attributes
300,000+
Management areasRiver systemMountain range
Hundreds – Thousands
Agency programsScientific campaigns
Several dozen
1980 2017
Problems with older NWI• Inconsistent levels of
detail• Redundant and displaced
features• Mislabeling
Extracted manually drawn polygons labeled as palustrine or lacustrine andscreened by perimeter/area
NWI
MRVN
Map of Riparian Vegetation for Nevada
Landsat‐based
Anomalous vegetativevigor in late summer
Supplemented with NHD perennial streams
Ag/Urban cropping
Higher Quality IndicatorsNewer NWIMRVNDetected SSI pointsWaterbody Edges
Lower Quality IndicatorsOlder severely edited NWIGSSURGO
High 2+ indicators, at least 1 high qualityMedium 1 high quality indicatorLow 1 low quality indicator
Confidence
Level 1 Analysis
Map and image products provide:
‐ current understanding of what’s there now
‐ Context on the site relative to its surroundings
‐ Information on changes over time
‐ Information to aid planning of Level 2 activities
Data vs. InformationArcMap Wetlands Toolbar (WetBar)
• Dynamic datasets (Google Earth Engine)• Data management• One‐time calculation• Interpretive Tools
Level 1 Land cover
• SWReGap
• LandFire
Sufficient accuracy for this scale?Other sources?What neighborhood?