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Urbanization by Watersheds
1984 – 2009 Twin Cities Metropolitan Area Urbanization by Watersheds Tobias Fimpel & Alex Steele
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Objective Identify land cover changes within the 8 primary watersheds in the Twin Cities metro area from 1984 – 2009
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Study Area
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Data Landsat images Watersheds in the Twin Cities Metropolitan Area
Watersheds in the Twin Cities Metropolitan Area Shapefile,DNR Level 08 Catchments from the Metropolitan Council.
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Data
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Procedures – Training Areas
Classification Scheme: Water Urban Undeveloped Agriculture
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Procedures – Supervised Classification
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Procedures – Clipping
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Procedures – Accuracy Assessments
Stratified Random Samples Reference Data: Landsat Overall accuracies of 72% and 84%
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Procedures – Change Detection
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Procedures – Clip Watersheds
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Results
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Results
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Mississippi River – Rush – Vermillion
Results Mississippi River – Rush – Vermillion North Fork – Crow River From-To Change Area (Hectacres) Percent Change Ag to Ag Ag to Undev Ag to Urban Ag to Water 108.63 Undev to Ag Undev to Undev Undev to Urban Undev to Water 206.82 Urban to Ag 1442.7 Urban to Undev 76.23 Urban to Urban Urban to Water 36.99 Water to Ag 86.94 Water to Undev 112.41 Water to Urban 169.11 Water to Water 104.49 Total 100 From-To Change Area (Hectacres) Percent Change Ag to Ag Ag to Undev 669.87 Ag to Urban Ag to Water 94.59 Undev to Ag Undev to Undev 1179 Undev to Urban 2431.8 Undev to Water 108.18 Urban to Ag 126.36 Urban to Undev 49.14 Urban to Urban 231.57 Urban to Water 8.55 Water to Ag 40.59 Water to Undev 80.37 Water to Urban 64.98 Water to Water 109.53 Total 100
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Results
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Results
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Urbanization
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