ASTM D5881 - 13

    Standard Test Method for (Analytical Procedure) Determining Transmissivity of Confined Nonleaky Aquifers by Critically Damped Well Response to Instantaneous Change in Head (Slug)

    Active Standard ASTM D5881 | Developed by Subcommittee: D18.21

    Book of Standards Volume: 04.09


      Format Pages Price  
    PDF 10 $43.00   ADD TO CART
    Hardcopy (shipping and handling) 10 $43.00   ADD TO CART
    Standard + Redline PDF Bundle 20 $51.60   ADD TO CART


    Significance and Use

    6.1 The assumptions of the physical system are given as follows:

    6.1.1 The aquifer is of uniform thickness, with impermeable upper and lower confining boundaries.

    6.1.2 The aquifer is of constant homogeneous porosity and matrix compressibility and constant homogeneous and isotropic hydraulic conductivity.

    6.1.3 The origin of the cylindrical coordinate system is taken to be on the well-bore axis at the top of the aquifer.

    6.1.4 The aquifer is fully screened.

    6.1.5 The well is 100 % efficient, that is, the skin factor, f, and dimensionless skin factor, σ, are zero.

    6.2 The assumptions made in defining the momentum balance are as follows:

    6.2.1 The average water velocity in the well is approximately constant over the well-bore section.

    6.2.2 Frictional head losses from flow in the well are negligible.

    6.2.3 Flow through the well screen is uniformly distributed over the entire aquifer thickness.

    6.2.4 Change in momentum from the water velocity changing from radial flow through the screen to vertical flow in the well are negligible.

    Note 1The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some of those factors.

    1. Scope

    1.1 This test method covers determination of transmissivity from the measurement of water-level response to a sudden change of water level in a well-aquifer system characterized as being critically damped or in the transition range from underdamped to overdamped. Underdamped response is characterized by oscillatory changes in water level; overdamped response is characterized by return of the water level to the initial static level in an approximately exponential manner. Overdamped response is covered in Guide D4043; underdamped response is covered in D5785, D4043.

    1.2 The analytical procedure in this test method is used in conjunction with Guide D4043 and the field procedure in Test Method D4044 for collection of test data.

    1.3 Limitations—Slug tests are considered to provide an estimate of the transmissivity of an aquifer near the well screen. The method is applicable for systems in which the damping parameter, ζ, is within the range from 0.2 through 5.0. The assumptions of the method prescribe a fully penetrating well (a well open through the full thickness of the aquifer) in a confined, nonleaky aquifer.

    1.4 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026.

    1.5 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.5.1 The procedures used to specify how data are collected/recorded or calculated, in this standard are regarded as the industry standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives and it is common practice to increase to reduce significant digits of reported data to be commensurate with these considerations. It is beyond the scope of this standard to consider significant digits used in analytical methods for design.

    1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D653 Terminology Relating to Soil, Rock, and Contained Fluids

    D3740 Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction

    D4043 Guide for Selection of Aquifer Test Method in Determining Hydraulic Properties by Well Techniques

    D4044 Test Method for (Field Procedure) for Instantaneous Change in Head (Slug) Tests for Determining Hydraulic Properties of Aquifers

    D5785 Test Method for (Analytical Procedure) for Determining Transmissivity of Confined Nonleaky Aquifers by Underdamped Well Response to Instantaneous Change in Head (Slug Test)

    D6026 Practice for Using Significant Digits in Geotechnical Data


    ICS Code

    ICS Number Code 07.060 (Geology. Meteorology. Hydrology)

    UNSPSC Code

    UNSPSC Code


    Referencing This Standard

    DOI: 10.1520/D5881

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM D5881-13, Standard Test Method for (Analytical Procedure) Determining Transmissivity of Confined Nonleaky Aquifers by Critically Damped Well Response to Instantaneous Change in Head (Slug), ASTM International, West Conshohocken, PA, 2013, www.astm.org

    Back to Top