Luis Alcántara García

Learn More
For several years, Colorado State University has been documenting flow and water quality conditions in Colorado's Lower Arkansas River Valley with the goal of providing data and models that water users and managers can use to enhance both agriculture and the environment in the Valley. Extensive measurements are being made in the field, and some previously(More)
The objectives of this study are: to compare regression kriging and Co-kriging techniques when applied to LANDSAT images to generate accurate soil salinity maps; to compare the performance of different crop types: alfalfa, cantaloupe, corn, and wheat as indicators of soil salinity; and to evaluate the best band combinations to estimate soil salinity with(More)
Two different techniques are evaluated in this study to estimate soil salinity in the lower Arkansas River Valley area in Colorado for both the sub-basin and field scales. Inverse Distance Weight (IDW) and Ordinary Kriging (OK) are evaluated as deterministic and geostatistical techniques respectively. Deterministic techniques depend on the assumption that(More)
A comprehensive salinity monitoring program has been conducted in a portion of the Arkansas Valley in southeastern Colorado from 1999 to the present. This area was selected for study because it provides a good illustration of a salinity-affected area. The main objective of this presentation is to utilize spatial statistical modeling using information from(More)
Colorado state University irrigation and drainage model 9IDSCU) is a three dimensional variable saturated-unsaturated numerical model that simulates the subsurface flow and transport processes. A Wide range of developments have been done to CSUID to fully simulate the response of agricultural fields to external stresses such as subsurface drainage systems,(More)
Keywords: Hydroclimatic variability Water supply forecasting Nonstationarity Colorado River Basin Climate change Land use/land cover/water use change s u m m a r y Mountain snowpack is the main source of water in the semi-arid Colorado River Basin (CRB), and while the demands for water are increasing, competing and often conflicting, the supply is limited(More)
During the 2004 growing season (May 20-August 20), irrigation activities were monitored along the 160-mile stretch between Fowler and Holly in Colorado's Lower Arkansas Valley. Fifteen fields were monitored to evaluate ongoing water use practices with an eye toward potential improvement. Ten of the monitored fields were surface irrigated, two by center(More)
This paper describes an approach to develop soil salinity maps using remotely sensed data. This approach is applied to an ongoing salinity monitoring program in a portion of the Arkansas Valley in southeastern Colorado. The approach involves integrating remote sensing data from Ikonos, GIS, and spatial analysis. The collected soil salinity data is tied to(More)
  • Ahmed Eldeiry, Luis Garcia, Ahmed Samy A. El-Zaher, Mohammed El-Sherbini
  • 2004
This paper presents a simplified method for furrow irrigation system design for clay soils in arid regions. Field experiments were conducted for a furrow irrigation system at an experimental site in Egypt with clay soils, cultivated with cotton and irrigated by a three-turn crop rotation. Several parameters were measured including the furrow geometry,(More)