Green‐ampt Infiltration Parameters from Soils Data

@article{Rawls1983GreenamptIP,
  title={Green‐ampt Infiltration Parameters from Soils Data},
  author={Walter J. Rawls and Donald L. Brakensiek and Norman L. Miller},
  journal={Journal of Hydraulic Engineering},
  year={1983},
  volume={109},
  pages={62-70}
}
The analysis of approx 5,000 soil horizons indicated that Green and Ampt parameters (effective porosity, wetting front capillary pressure, and hydraulic conductivity) could not be developed based on phases of soil order or suborder. However, sets of average parameters are developed based on soil horizon or soil texture class, or both. A procedure for determining the Green and Ampt parameters based on soil properties utilizing the full spectrum of soil survey information is outlined. 

Figures and Tables from this paper

Green and Ampt Infiltration with Redistribution

Distributed, physically based watershed and irrigation advance models require robust infiltration estimation capabilities. The empirical Green and Ampt (GA) equation of infiltration is a popular

Effect of Aggregate Size and Porosity of Clay Soils on the Hydraulic Parameters of the Green-Ampt Infiltration Model

AbstractTo study the effect of aggregate size and total porosity of soil on the hydraulic parameters of the Green-Ampt (GA) infiltration model, eight laboratory constant-head infiltration tests wer...

EVALUATION OF GREEN-AMPT INFILTRATION EQUATION IN SOME AGRICULTURAL SOILS IN MEXICO, USING USDA INFORMATION AND A MODIFIED METHOD FROM BROOKS AND COREY

The values of the parameters suggested in Mexico drastically underestimated the results with relative errors (RE) in the range of -49.0 to -94.0%, and the most representative ones were those obtained with the methodology proposed in this research, with RE of 6.0%.

Estimating Soil Hydraulic Parameters By Using Green and Ampt Infiltration Equation

Infiltration is the process of water movement from the ground surface into the soil and is an important process in the hydrological cycle. In this study, a mathematical equation of the

Determination and Evaluation of the Parameters for the Green & AMPT Infiltration Equation in Some Agricultural Soils in Mexico

An adequate representation of the water infiltration process in the soil allows improving the efficiency in application and the uniformity in surface irrigation. The Green and Ampt model has shown a

On Soil Retention Curves and Hydrological Forecasting in Ungauged Catchments

In many physically based hydrological models, there is the requirement to specify the suction-moisture curve of the soil system. This paper shows that where the suction moisture curve is known, then

Case studies on water and nutrient management

For the development ofthe Limburg Soil Erosion Model (LISEM), a validated hillslope hydrology module was needed. Therefore, hydraulic heads were monitored on four hillslopes in the southern part of

A proposal of an infiltration function with ecological meaning

In this work an infiltration function is proposed. This function gives a conceptual framework that may be useful to advance in soil/water/vegetation relationships. This function has fourteen

Continuous Modeling of Bioinfiltration Storm-Water Control Measures Using Green and Ampt

AbstractContinuous simulation of storm-water control measures (SCM) requires consideration of the variable environmental and site factors that affect infiltration. This article reviews the theory of

Estimation of infiltration rate from readily available soil properties (RASPs) in fallow cultivated land

The information about water transmission rate into the ground is vital concerning the productivity of water system and seepage, advancing the accessibility of water for the plants, enhancing the
...

References

SHOWING 1-10 OF 14 REFERENCES

Variation within Texture Classes of Soil Water Parameters

ABSTRACT THE Brooks and Corey effective saturation-capillary pressure equation was fitted to 1,085 soil moisture characteristics for 10 soil texture classes ranging from sand to clay. The fitted

Estimating the effective capillary pressure in the Green and Ampt Infiltration Equation

A considerable amount of research indicates that the Green and Ampt infiltration equation can be used in hydrologic modeling with confidence. The parameters, however, still require considerable field

Statistical analysis of the Brooks-Corey and the Green-Ampt parameters across soil textures

Infiltration is a major component of the hydrologic cycle for most watersheds. Therefore it is important to have a method that can provide infiltration estimates for soils within ungaged watersheds.

Estimating Soil Water Retention from Soil Properties

Soil water retention characteristics are needed to describe the movement and storage of water in soils. Since conventional laboratory methods of obtaining these are expensive and time consuming, a

Empirical equations for some soil hydraulic properties

The soil moisture characteristic may be modeled as a power curve combined with a short parabolic section near saturation to represent gradual air entry. This two-part function—together with a power

Rapid field measurement of air entry value and hydraulic conductivity of soil as significant parameters in flow system analysis

Field measurements of air entry value and hydraulic conductivity of soil are obtained with a covered cylinder infiltrometer equipped with standpipe and vacuum gage. Tests are normally completed in

SOIL WATER CHARACTERISTICS OF KANTO LOAM

The objective of the present paper is to make clear soil water characteristics of Kanto Loam by presenting data obtained in laboratory. The experimental apparatus originally developed by Richards was

A parameter‐efficient hydrologic infiltration model

By adopting two extreme assumptions concerning the behavior of unsaturated soil hydraulic conductivity K near saturation, we derived a two-branched model for ponding time and infiltration rate decay

Estimating soil water retention characteristics from particle size distribution, organic matter percent, and bulk density

Regression models are presented for estimating soil-water-retention curves from particle-size distribution, percentage of organic matter, and bulk density. Models were developed from the measured

A Monte Carlo Analysis of the hydrologic effects of spatial variability of infiltration

Monte Carlo simulation is employed to analyze the effects of random distribution of soil infiltration properties on the hydrologic performance of catchment areas. Soil hydraulic parameters are