ASCE 70-19 PDF Download

The ASCE 70-19 standard provides guidelines for estimating the hydraulic properties of groundwater systems using inverse numerical modeling of aquifer pumping tests.

The standard is prepared by the Standards Committee on Fitting of Hydraulic Conductivity Using Statistical Spatial Estimation (KSTAT) of the Standards Development Council of the Environmental and Water Resources Institute of ASCE. It is the fifth in a series of standards aiming to enhance the understanding and characterization of the saturated hydraulic conductivity (Kstat), an important parameter in groundwater systems.

The standard offers guidance on utilizing a numerical groundwater flow model to simulate an aquifer pumping test and estimate the hydraulic properties of the aquifer. It is applicable in situations where inverse methods based on analytical solutions for aquifer response to pumping are not suitable. The methodology involves adjusting the values of relevant aquifer hydraulic properties, such as transmissivity, storativity, and leakance, to minimize the residual error between observed and simulated heads.

This standard will be valuable to environmental engineers, water resources engineers, and professionals who work with hydraulics in engineering.