Urbanization by Watersheds 1984 – 2009 Twin Cities Metropolitan Area Urbanization by Watersheds Tobias Fimpel & Alex Steele
Objective Identify land cover changes within the 8 primary watersheds in the Twin Cities metro area from 1984 – 2009
Study Area
Data Landsat images Watersheds in the Twin Cities Metropolitan Area 8-15-1984 7-25-2009 Watersheds in the Twin Cities Metropolitan Area Shapefile,DNR Level 08 Catchments from the Metropolitan Council.
Data
Procedures – Training Areas Classification Scheme: Water Urban Undeveloped Agriculture
Procedures – Supervised Classification
Procedures – Clipping
Procedures – Accuracy Assessments Stratified Random Samples Reference Data: Landsat Overall accuracies of 72% and 84%
Procedures – Change Detection
Procedures – Clip Watersheds
Results
Results
Mississippi River – Rush – Vermillion Results Mississippi River – Rush – Vermillion North Fork – Crow River From-To Change Area (Hectacres) Percent Change Ag to Ag 19453.1 22.9529145 Ag to Undev 1014.03 1.196464517 Ag to Urban 14063.6 16.59378754 Ag to Water 108.63 0.128173664 Undev to Ag 24758.8 29.21316497 Undev to Undev 3143.61 3.709178051 Undev to Urban 16420.82 19.37509587 Undev to Water 206.82 0.244029064 Urban to Ag 1442.7 1.702256697 Urban to Undev 76.23 0.089944568 Urban to Urban 3553.92 4.193307076 Urban to Water 36.99 0.043644885 Water to Ag 86.94 0.102581408 Water to Undev 112.41 0.132633725 Water to Urban 169.11 0.199534643 Water to Water 104.49 0.123288835 Total 84752.2 100 From-To Change Area (Hectacres) Percent Change Ag to Ag 1963.35 16.46104509 Ag to Undev 669.87 5.616298812 Ag to Urban 1908.09 15.99773628 Ag to Water 94.59 0.793057914 Undev to Ag 2861.28 23.98943596 Undev to Undev 1179 9.884927372 Undev to Urban 2431.8 20.38860592 Undev to Water 108.18 0.906998679 Urban to Ag 126.36 1.05942275 Urban to Undev 49.14 0.411997736 Urban to Urban 231.57 1.941520468 Urban to Water 8.55 0.071684588 Water to Ag 40.59 0.340313148 Water to Undev 80.37 0.673835125 Water to Urban 64.98 0.544802867 Water to Water 109.53 0.918317299 Total 11927.25 100
Results
Results
Urbanization