API 4643 : 1996
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
ESTIMATION OF INFILTRATION AND RECHARGE FOR ENVIRONMENTAL SITE ASSESSMENT
Hardcopy , PDF
16-02-2024
English
01-07-1996
EXECUTIVE SUMMARY
1 INTRODUCTION
2 RECHARGE CONCEPTS AND TERMINOLOGY
SUMMARY OF SOIL PHYSICS PRINCIPLES
Water Content
Hydraulic Head and Pressure Head
Soil-Water Retention Curve
Hydraulic Conductivity
Infiltration, Redistribution and Recharge
CONTAMINANT TRANSPORT
DIFFUSE RECHARGE CONCEPTS
3 METHODS TO QUANTIFY DIFFUSE NATURAL RECHARGE
PHYSICAL METHODS FOR DETERMINING DIFFUSE RECHARGE
Soil-Water Balance
Soil-Water Storage
Lysimeter Measurements
Darcy Flux Method
Plane of Zero Flux Method
Soil Temperature Methods
Electromagnetic Methods
Groundwater Basin Outflow Method
Water-Level Fluctuations
Stream Gauging
CHEMICAL METHODS FOR DETERMINING DIFFUSE RECHARGE
Chemical Methods in the Vadose Zone
Chemical Tracers in Aquifers
MATHEMATICAL MODELS FOR ESTIMATING RECHARGE
Soil-Water Balance
Stream Gauging
Darcy Flux and Plane of Zero Flux Methods
Soil-Water and Groundwater Models
Lysimetry
Other Physical Techniques
Chemical Methods
Aquifer Hydrochemistry
5 CONSIDERATIONS AND RECOMMENDATIONS FOR SELECTING
RECHARGE ESTIMATION TECHNIQUES
CONSIDERATIONS
RECOMMENDATIONS
Estimation Methods for Humid Climates
Estimation Methods for Arid Climates
6 FUTURE RESEARCH
REFERENCES
GLOSSARY
Appendix A
ESTIMATE OF DIFFUSE ANNUAL RECHARGE
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