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o C) ~ Co:) C;"t CO The irrigation management services will be administered by a technical . staff to provide information and assistance to water users on means and measures for limiting excess water applications to irrigated land. These services will be provided for 5 years after initial funding. About 6,000 acres were included in IMS activities during the past irrigation season. The irrigation system improvements in the Grand Yalley Unit will include linings of canals and laterals, and the combining of existing canals and laterals into fewer and more efficient facilities. Recent activities have established design standards for canal and lateral structures. Meetings have been held with local organizations to determine safety standards to be included in the system improvements and with the local irrigation orgsnizations (canal and lateral owners) to determine specific needs of the irrigator and establish design criteria to meet these needs. Ground water observation wells on a half-mile grid, were completed in the Peck and Bede Wash study area. Data collection for surface snd ground water quantity and quality continued at numerous points. . When advance planning funds become available, a contract will be negotiated to obtain topography by photogrammetric means at a scale of 400 feet per inch with a 2-foot contour interval. Photography must be obtained in March 1975 before water is turned into the canals. Additional ground water observation wells will be drilled above the Grand Yalley HighlineCanal and along the Grand'Yalley Canal to obtain needed ground water data for canal lining. All main canals will be observed as soon as the water is turned out to determine ground water seeping into the canals, cracks where water might be seeping from the canals and to select locations where ponding tests will be made this fall and winter. Soil samples will be gathered along the canal and laterals for data for design of the canal lining. Additional meetings will be held with canal and lateral owners to develop criteria for preparing the required operation contracts. The Definite Plan Report is scheduled for completion 2 years after initiation of advance planning studies. construction activities may extend over a 10-year period because the activity will be limited to the nonirrigation season. Crystal Geyser, an abandoned oil well, located just south of Green River, Utah, contributes 200 acre-feet of water and 3,000 tons of salt to the Green River annually. The basic plan of control is to build a wall or dike around the points of eruption to collect the discharges and then convey the water by pipeline to an evaporation pond some 3 miles away. When advance planning funds are available, geologic and materials investigations will be conducted at the geyser, pipeline route and 3 ',>.