2003 Irrigated Lands Update - Lower Arkansas - Memo

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i Memorandum To: Ray Alvarado, CWCB Bill Tyner, DWR i From: Riverside Technology, inc., Timothy Martin and Claudio Schneider Subject: Recommendations for Satellite Imagery and Other Data for 2003 Irrigated Lands Update in the Lower Arkansas River Basin Date: 03 March 2003 1. Introduction and Background This memo provides recommendations for Landsat image acquisition and other data development for a 2003 irrigated lands update in the Lower Arkansas River Basin. The recommendations are based on consultations with Division 2 and our experience with irrigated lands assessment and multi - temporal crop signature analysis in the South Platte Basin and other watersheds in the western U.S. We met with Division 2 and CWCB personnel at RTi offices in January 2004 and again at Division 2 offices in late February 2004. Division 2 provided information on cropping patterns and consumptive use, irrigated lands data, and discussed their methods and activities conducted over the past several years. Also, we conducted Internet -based searches for imagery and data products, contacted data providers and discussed the status of digital orthophotograph data production with the USGS. Our area of interest is primarily focused on irrigated lands along the mainstem of the Arkansas River from Pueblo Reservoir east to the state line. If intensive study is needed for other areas within Division 2, additional data may be required. 2. Summary of Costs for Recommended Satellite Images and Related Data Table 1 provides a summary of the cost of data that is described in more detail in subsequent sections of this memo. The costs are for data only and do not include costs for data processing, interpretation, or analysis. Table 1: Summary of Estimated Costs Description Cost Multidate Landsat imagery for Irrigated Lands Assessment $ 7,920 Additional Landsat imagery to cover entire Division 2 $ 1,994 Digitial Orthophotographs $ 8,500 Total $18,414