Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 3281-3300 of 3826
-
Estimating Peak Flows from Small Agricultural Watersheds
(American Society of Civil Engineers, 1992)A method is developed for estimating peak runoff rates and return periods from agricultural watersheds by analyzing precipitation and runoff data, and by using the CREAMS model. Dimensionless Huff curves are used with the ... -
ALIVE (Advance Linear Velocity): Surface Irrigation Rate Balance Theory
(American Society of Civil Engineers, 1992)Previously, surface irrigation hydraulic models used the principle of mass conservation to simulate the advance of water along the field and to solve the inverse problem of finding the infiltration function from measurements ... -
Darcy‐Weisbach Roughness Coefficients for Gravel and Cobble Surfaces
(American Society of Civil Engineers, 1992)A laboratory study is conducted to measure Darcy‐Weisbach roughness coefficients for selected gravel and cobble materials. Varying rates of flow are introduced into a flume in which a given size class of gravel or cobble ... -
Erratum: “Practical Land Grading Based on Least Squares” by Edmar J. Scaloppi and Lyman S. Willardson (May, 1986, Vol. 112, No. 2)
(American Society of Civil Engineers, 1991) -
Closure to “<i>Design of Hydraulic Jump Chambers</i>” by Scott F. Korom, Simsek Sarikelle, and Andrew L. Simon (March/April 1990, Vol. 116, No. 2)
(American Society of Civil Engineers, 1991) -
Relating Crop‐Yield Response to Water‐Table Fluctuations
(American Society of Civil Engineers, 1992)Field data of water‐table depth fluctuations under cotton grown in Egypt arc used to relate water‐table depth frequency of occurrence to yield. Daily water‐table levels are measured. A multiple linear regression analysis ... -
Discussion of “<i>Nonlinear Steady State Seepage into Drains</i>” by Salihu Mustafa and N. A. Rafindadi, (June, 1989, Vol. 115, No. 3)
(American Society of Civil Engineers, 1991) -
Discussion of “<i>Nonlinear Steady State Seepage into Drains</i>” by Salihu Mustafa and N. A. Rafindadi, (June, 1989, Vol. 115, No. 3)
(American Society of Civil Engineers, 1991) -
Precipitation Distributions and Green‐Ampt Runoff
(American Society of Civil Engineers, 1991)One‐hundred‐year and 10‐year storm runoff volumes and peak discharges were computed with a Green‐Ampt infiltration model and the Soil Conservation Service's (SCS) TR‐20 hydrograph model. The results for six different ... -
Application of Least‐Squares Land Leveling
(American Society of Civil Engineers, 1991)A least-squares land-leveling program written for use on microcomputers allows flexibility in design that was not previously available. The user can specify six different types of land-leveling conditions common under ... -
Discussion of “<i>Infiltration Function from Furrow Stream Advance</i>” by William R. DeTar (August, 1989, Vol. 115, No. 4)
(American Society of Civil Engineers, 1991) -
Investigation of Precipitation Droughts by Use of Kriging Method
(American Society of Civil Engineers, 1991)Precipitation droughts were defined using monthly precipitation time series and different truncation levels—namely, 70%, 80%, 90%, and 95%—in which a 70% truncation level means that 70% of the recorded monthly precipitations ... -
Multicriterion Strategic Planning for Improved Irrigation Delivery. II: Application
(American Society of Civil Engineers, 1991)A companion paper (Gates et al. 1991) developed an approach for assessing alternative strategies for improving an irrigation water delivery system in the context of multiple planning criteria. The present paper applies ... -
Discussion of “<i>Accuracy of Estimated Reference Crop Evapotranspiration</i>” by George H. Hargreaves (December, 1989, Vol. 115, No. 6)
(American Society of Civil Engineers, 1991) -
Closure to “<i>Calculation of Distribution and Efficiency for Nonuniform Irrigation</i>” by A. W. Warrick, W. E. Hart, and M. Yitayew (August, 1989, Vol. 115, No. 4)
(American Society of Civil Engineers, 1991) -
Design of Rectangular Open‐Channel Expansion Transitions
(American Society of Civil Engineers, 1991)Transitions form a vital link in the canals constructed for irrigation and power‐generation purposes. As expansive transitions involve considerable head loss, any reduction of head loss will mean more power generation at ... -
Discussion of “<i>Calculation of Distribution and Efficiency for Nonuniform Irrigation</i>” by A. W. Warrick, W. E. Hart, and M. Yitayew (August, 1989, Vol. 115, No. 4)
(American Society of Civil Engineers, 1991) -
Design of Irrigation Canals: Integrated Approach
(American Society of Civil Engineers, 1991)A design methodology is developed to obtain the least‐cost design of irrigation canals. The proposed methodology incorporates elements of the water section and the above‐water section, and is applicable to both lined and ... -
Numerical Modeling of Two‐Dimensional Transient Flow to Ditches
(American Society of Civil Engineers, 1991)A numerical model of two‐dimensional transient saturated flow to ditches is presented. The model is based on a finite differences solution of the differential equation governing two‐dimensional transient flow in a heterogeneous ... -
Multicriterion Strategic Planning for Improved Irrigation Delivery. I: Approach
(American Society of Civil Engineers, 1991)This paper develops an approach for assessing alternative strategies for improving an irrigation water delivery system in the context of multiple planning criteria. The methodology focuses on the exploration of distinct ...