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. 4. Error Matrix of Irrigated Lands Classification After Initial Thresholdingla, is
Reference Parcels
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Irrigated Lands 445 277 722 38.4% 61.6%
Non-irrigated Lands 11 179 190 5.8% 94.2%
Total 456 456
Error of Omission 2.4% 60.7% 912
Producer's Accuracy 97.6% 39.3%
Overall Accuracy =
90% Confidence Interval=
95% Confidence Interval=
99% Confidence Interval=
Overall KIA =
KIA per Category
Category
Irrigated Land
Non-irrigated Lands
68.42% +/- 2.52% _
68.42% +/- 3.02% _
68.42% +/- 3.97% _
KAPPA INDEX OF AGREEMENT (KIA)
KIA
0.23
0.88
14 Accuracy assessment estimate using FSA data
i5 Accuracy assessment corresponds to Landsat frame 33/32, representing 89% of irrigated lands in SPDSS
65.90% to 70.95%
65.40% to 71.44%
64.45% to 72.39%
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