Ndvi and archydro
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NDVI and ArcHydro. ArcHydro Terrain Pre-Processing tools DEM fill Flow Direction Flow Length Stream Segmentation Conversion from raster to vector. NDVI Use NDVI to examine vegetation in OFNW Isolate north facing slopes using the Model Maker

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Presentation Transcript

Methods

ArcHydro

Terrain Pre-Processing tools

DEM fill

Flow Direction

Flow Length

Stream Segmentation

Conversion from raster to vector

NDVI

Use NDVI to examine vegetation in OFNW

Isolate north facing slopes using the Model Maker

Use Knowledge Engineer to mask out north facing slopes and NDVI vegetation value

Model Maker to perform clump-sieve to get rid of unwanted pixels

Methods



Results conclusions

ArcHydro

Effective for calculating stream and river networks

Fast

5.9 hectares of streams in the OFNWR

Extension is designed for major hydrologic resources (e.g. Nooksack River)

DEM accuracy extends only as far as its resolution

10 m DEM

Small streams

NDVI

Final image contained too many misclassified areas

Streams not properly delineated

Major vegetation coverage made stream identification difficult, even from 1 mtr image

Leaf area

Small streams

Useful for larger hydrologic applications

Tested in Bellingham

Results & Conclusions


Acknowledgements
Acknowledgements

  • Mike Leech

  • Dr. David Wallin

  • WWU SAL tech


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