Laserfiche WebLink
b. Conduct soil survey of beta drainage system. Install new observation wells as <br /> needed along the beta drainage system. <br /> c. Establish initial baseline data on well depths prior to cleaning,and then monitor <br /> water table depths as the beta system is cleaned,and for two additional irrigation <br /> seasons after cleaning. Develop or update water contour maps as data is <br /> recorded. <br /> d. Excavate wasteway for the beta drainage system as needed. <br /> e. Install water flow monitoring system at the outlet(s)of the beta system into the <br /> wasteway as needed. <br /> 4. Clean out the selected beta subsurface drainage system. This system will be used to <br /> estimate rehabilitation benefit-costs. <br /> 5. Organize and conduct a study tour for Lower Arkansas Valley drainage district board <br /> members to the South Columbia Basin Irrigation District,Pasco,Washington to view its <br /> drainage operation,maintenance and drainage record keeping program. This study tour is <br /> designed to assist a research advisory committee that will be responsible for overseeing <br /> the study,and to begin a dialogue about the future organizational structure of drainage <br /> districts in the Lower Arkansas Valley. <br /> 6. Explore with landowners the possible opportunities to combine all or most drainage <br /> district operations under a new consolidated drainage authority for the Lower Arkansas <br /> Valley. <br /> a. Evaluate and compare 0&M costs for the current unconsolidated drainage <br /> district situation(i.e.,25 or so independent drainage districts)and then for a new <br /> consolidated authority,utilizing an 0&M program similar to that of the South <br /> Columbia Basin Irrigation District. <br /> 7. Develop a multi-county(i.e.,Prowers,Bent,Crowley and Otero counties)rehabilitation <br /> and maintenance spreadsheet,based on methods derived from the South Columbia Basin <br /> Irrigation District drainage maintenance program. This database will also provide <br /> guidelines for future rehabilitation steps. <br /> 8. Determine the need for expanding the existing drainage system to benefit irrigated lands. <br /> a. An analysis of potential new subsurface and surface drainage systems that would <br /> benefit additional lands that do not appear to be served by the existing drainage <br /> systems,and the additional estimated benefited acreage. Information on <br /> potentially new benefited acreage would be obtained from the current on-going <br /> Colorado State University research. <br /> b. A preliminary estimate of the maximum economic benefit to be achieved by <br /> designing adequate drainage for the best classes of land in the tri-county area, <br /> based on their current production value. <br />