SPDSS_Task89-2_CropLandUseClassificationProcedures_20060929

• Title: SPDSS Task 89.2 - Crop and Land Use Classification Procedures for Year 2001
• Description: This memorandum describes the activities conducted under Task 89: ‘Mapping of Irrigated Land Use and Irrigated Parcel Boundaries’ for year 2001 and complements the SPDSS Memoranda for Task 89.1 and Task 90.2. This memorandum also provides details on the methods used to conduct a number of Task 89 activities, including Task 89.3: Determine Irrigated Vs. Non-irrigated Lands, Task 89.4: Identify Crop Types In Each Polygon, Task 89.5: Review, Revision and Final Classification, and Task 89.6: Conduct Accuracy Assessment, as well as the results obtained from these activities for year 2001.
• Decision Support - Doc Type: Task Memorandum
• Date: 9/29/2006
• DSS Category: GIS
• DSS: South Platte
• Basin: South Platte
• Contract/PO #: C153960
• Grant Type: Non-Reimbursable
• Bill Number: SB01-157, HB02-1152, SB03-110, HB04-1221, SB05-084, HB06-1313, SB07-122
• Prepared By: Riverside Technology inc.

MEMO 89.2 -APPENDIX D
Table D. 7. Error Matrix of the First Irrigated Crop Type Classification Refinementzo, z~
Reference Parcels
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ategor
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Small Grains 37 0 0 0 2 0 39 5.1% 94.9%
D Beans 4 21 1 3 0 0 29 27.6% 72.4%
Corn and Sor hum 0 4 101 1 1 0 107 5.6% 94.4%
Su ar Beets 0 0 1 19 0 0 20 5.0% 95.0%
Alfalfa 1 0 2 1 76 3 83 8.4% 91.6%
Grass Pasture/Ha 0 1 0 0 0 14 15 6.7% 93.3%
Total 42 26 105 24 79 17 293
Error of Omission 11.9% 19.2% 3.8% 20.8% 3.8% 17.6%
Producer's

Accuracy gg 1% 80.8% 96.2% 79.2% 96.2% 82.4%
Overall Accuracy =
90% Confidence Interval=
95% Confidence Interval=
99% Confidence Interval=
91.5% +/- 2.7% _
91.5% +/- 3.2% _
91.5% +/- 4.2% _
88.8% to 94.1%
88.3%to 94.7%
87.3%to 95.7%
Overall KIA =
KIA per Category
Category
Small Grains
Dry Beans
Corn
Sugar Beets
Alfalfa
Grass Pasture
KAPPA INDEX OF AGREEMENT (KIA)
KIA
0.86
0.79
0.94
0.78
0.95
0.81
20 Accuracy assessment estimate using FSA data
zi Accuracy assessment corresponds to Landsat frame 33/32, representing 89% of irrigated lands in SPDSS
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