ASTM D5850
Standard Practice for (Analytical Procedure) Determining Transmissivity, Storage Coefficient, and Anisotropy Ratio from a Network of Partially Penetrating Wells
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About This Item
ASTM D5850 is the ASTM standard for an analytical procedure used to determine transmissivity, storage coefficient, and anisotropy ratio from a network of partially penetrating wells. It provides a structured approach for interpreting groundwater test data when wells do not fully penetrate the aquifer, helping users derive key hydraulic properties with greater consistency. This makes ASTM D5850 useful for technical evaluations where reliable aquifer characterization supports design, modeling, and decision-making.
Overview of ASTM D5850
The purpose of this standard is to guide an analytical procedure for estimating aquifer parameters from observations gathered through a well network. Its title indicates a focus on transmissivity, storage coefficient, and anisotropy ratio, which are central measures in groundwater analysis. ASTM D5850 is especially relevant when dealing with partially penetrating wells, since incomplete penetration can affect interpretation and require a more specialized method. The standard helps keep the analysis approach consistent and defensible.
Common use cases of ASTM D5850
This standard is commonly used in hydrogeologic investigations where pumping or response data from partially penetrating wells must be interpreted. It may support aquifer testing, groundwater modeling, and site characterization work that depends on estimating hydraulic behavior from a network of wells. ASTM D5850 is also relevant in engineering workflows that require comparison of field data against a recognized analytical procedure, particularly when evaluating layered or directionally variable subsurface conditions.
Benefits of using ASTM D5850
Using ASTM D5850 can improve consistency in the evaluation of groundwater test results and help reduce uncertainty in parameter estimation. Because it addresses a defined analytical procedure, it supports more repeatable interpretation across projects and teams. That can be valuable for compliance-oriented documentation, technical review, and procurement of standards-based methods. For organizations working with aquifer data, the standard offers a clearer basis for quality control and risk-informed engineering decisions.
- Analytical procedure for partially penetrating wells
- Transmissivity and storage coefficient estimation
- Anisotropy ratio interpretation
- Groundwater test data evaluation
- Standards-based aquifer characterization
- Publication Date: 2020-07-31
- Publisher: ASTM
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