Pumping tests aquifer performance tests are used in groundwater hydrology to. Infinite extent allows graphing or analysis of five wells simultaneously. This is mainly true in observation wells, but not in the pumping well pw itself. Standard pumping test sections should be read to better determine your needs.
Oct 03, 2017 scheduled sampling sets the rates at which the water level data is collected for a number of separate intervals, allowing the typical logarithmicstyle sampling schedule to be set. Compare pumping test solutions in the pro and standard versions constantrate pumping tests. Pumping test procedures for water withdrawal applications. Aquifer step testing nt darrel dunn hydrogeologist. East gw3 constant rate test was halted early due to stabilisation of pumping water level. Measurements of recovery shall continue until the aquifer has recovered to within 95% of its pre pumping water level. We can run through the pros and cons of any commercially available software on the market. Jun 03, 2019 the 101d water level drawdown meter in drawdown mode is excellent for tests that require a constant level of drawdown, such as during a constanthead or stepdrawdown aquifer test. Test pumping rate nys decs expectation is that a constant pumping rate will be a fundamental part of the test design. Pumping continued for eight hours at a constant rate of 220 gallonsperminute gpm. This is the main part of the pumping test, and most commonly involves pumping the well continuously at a constant rate for the test duration. Constant rate test yield test pumpingyield test pumping. If the pumping rate was not constant throughout the pumping test, recoverytest data are more reliable than drawdown data because the water table recovers at a constant rate. The 101d sounds when the probe is in air, allowing you to adjust pumping rates as required to maintain the level of drawdown.
Estimates hydraulic properties using the theory of superposition in that the water level rise after the test is assumed to be the combined response to an imaginary well recharging the aquifer and continued pumping. During the pumping test and after the test, data were collated and analysed to determine the following hydraulic parameters. Seek advice from waikato regional council or from a consultant to check that this is the right test for your situation. Csro10, csro11 and csro12 were developed by airlift and purging in march 2012 to remove. The pumping test will often reach an equilibrium condition in which the water level decline in the aquifer becomes negligible over time. Water level in the test well must remain above the intake plus a. The test well well 3 fully penetrated an 18ft thick sand and gravel aquifer under nonleaky artesian conditions. Both pumping tests are explained in this guide and both the standard and non. The sustainable yield is defined as the rate at which the borehole can be operated for a long time e. The importance of measuring drawdown on the level blog. Pumping test procedures for water withdrawal permit. Aqtesolv is the original, allinone software package for the analysis of pumping tests, slug tests and constant head tests standard and pro versions.
Well losses often important, so drawdown in the pumping well often not useful during pumping. Leaky aquifers, steadystate flow, hantushde glees method. Comparison of constantrate pumping test and slug interference test. In this webinar, you will learn why these tests are conducted and the equipment that you will need, along with tips on how to. Measurements of recovery shall continue until the aquifer has recovered to within 95% of its prepumping water level.
It is good practice for the pumping rate used in the test to closely reflect the design pumping rate required by the project the pumping test will often reach an equilibrium condition in which the water level decline in the aquifer becomes negligible over time. Shortterm pump tests with poor control of discharge are not suitable for. Although some oiler designs havent changed much over time, others have become more advancedas have the equipment and applications they serve. While collecting data during a pumping test is relatively straightforward, the interpretation of pumping test data requires specialist skills. Mar, 2019 a pumping test is a field experiment in which a well is pumped at a controlled rate and water level response drawdown is measured in one or more surrounding observation wells and optionally in the pumped well control well itself. A pumping test involves pumping from a test well at a controlled rate and monitoring the flow rate from the well and the drawdown in an array of observation wells at varying radial distances from the test well. Blog good practice in pumping tests groundwater eng. Constanthead tests a constanthead or constantdrawdown test keeps the head water level in the control well at the same level throughout the test maintains the drawdown level. Vandalism has occurred in the past at unattended sites, some severe enough to. Aquifertest pro represents a major leap forward in pumping test analysis technology. Make aqtesolv your choice for pumping test analysis software to get a complete package for constant and variablerate pumping tests, recovery tests, sinusoidal tests, singlewell tests, stepdrawdown tests, tests with multiple pumping wells, automatic image well generation, predictive simulation and pumping test design, and more. Barlow and moench 1999 recently published the fortran program wtaq, which is based on radial axisymmetric flow to a well under confined or unconfined conditions.
The pump is generally allowed to run at maximum capacity with little or no attempt to maintain constant discharge. Expanded descriptions of these tests are provided in the suggested reference. Constanthead pumping test of a multiaquifer well to. Any deviation from this philosophy must be discussed with nys dec prior to carrying out the test. Constant level oilers have been utilized on process pumps and other rotating equipment for more than half a century. Aquifertest pumping test and slug test analysis and. Constanthead pumping test of a multiaquifer well to determine characteristics of individual aquifers by gordon d.
Analysis of data from a correctly executed pumping test can be one of the most reliable methods of determining the mass permeability of. In south africa, the main aim of pumping tests is to estimate what we call sustainable yield of a borehole. As you pump the water out, keep track of how much water is pumped out per minute and in total and note down how much the level of the water in the well has fallen at regular intervals. Designed by hydrogeologists for hydrogeologists, aquifertest delivers all the tools needed to accurately interpret data from all types of aquifers in all types of test conditions. Analysis of pumping test data in order to accurately analyze pumping test data it is necessary to use the methods and formulae appropriate for the hydrogeologic and test conditions encountered at, and specific to, the pumping test site. Here is a semilog plot of drawdown in three observation wells for the same pumping test. Mar 01, 2007 constant level oilers have been utilized on process pumps and other rotating equipment for more than half a century. When the pump is shut down after a pumping test, the water level inside the. The test for constanthead pumping chp is commonly performed to estimate the aquifer parameters i. A pumping test is a field experiment in which a well is pumped at a controlled rate and water level response drawdown is measured in one or more surrounding observation wells and optionally in the pumped well control well itself.
Aquifer test recovery data form susquehanna river basin. Aquifer test in which piezometric head drawdown in a well is maintained at a constant level while water discharge rate is monitored. Aquifer testing is a common tool that hydrogeologists use to characterize a system of aquifers, aquitards and flow system boundaries. This is made easy with pumping test and slug test data analysis software that offers a. The usgs has published software for analysis of aquifertest and slugtest data. A 72hour constant rate pump test was conducted october 16. A pumping test is a field experiment in which a well is pumped at a controlled rate and water level response is measured in one or more surrounding observation wells and optionally in the pumped well control well itself.
An aquifer test performed with a controlled pumping rate constantrate test stepdrawdown test well performance recovery test water level response drawdown measured in control well and one or more observation wells. The water level measured in a pumping well is not the water level in the aquifer. The chp is usually carried out by maintaining a constant water level or drawdown in the test well and the wellbore flowrate and the. The derivative of each test response was calculated using the deriv program. Appendix i stage 1 groundwater monitoring bore pumping tests shell. Constant rate gridley walton 1962 presented data from a pumping test conducted on july 2, 1953 near gridley, illinois. A constant rate pumping test is performed by pumping the well at a constant rate for the duration of the test.
Aqtesolv provides the most complete suite of methods for the interpretation of constant rate and variablerate pumping tests the figure below illustrates the application of the tartakovsky and neuman 2007 solution for a constant rate pumping test in an unconfined aquifer with threedimensional. A simple method of analyzing data from a constant rate pumping test to obtain a value for transmissivity called the jacob method is a special case of this steprate method in which there is only one step. Theis, 1946 recovery recovery test after constant discharge from a fully. You may want to check out more software, such as retail software pos professional, pointos professional or scott professional photo studio, which might be similar to aquifertest professional. May 30, 20 this webinar discusses stepdrawdown and constant rate pumping tests. This page covers how to do a constant flow rate aquifer pumping test.
Aquifertest is an easytouse software package for analyzing, interpreting and visualizing pumping and slug test data. Suggested operating procedures for aquifer pumping tests it is intended for use by those professionals involved in characterizing sites which require corrective action as well as those which are proposed for ground water development, agricultural development, industrial development, or disposal activities. Aqtesolv provides the most complete suite of methods for the interpretation of constantrate and variablerate pumping tests the figure below illustrates the application of the tartakovsky and neuman 2007 solution for a constantrate pumping test in an unconfined aquifer with threedimensional. Therefore, the primary concern in the design of a constantdrawdown test is the exact drawdown level. Constant head pumping test of a multiaquifer well to determine characteristics of individual aquifers by gordon d. Constant rate pumping test analysis software includes theis, hantush, walton, neuman, huisman, thiem, specific capacity, distancedrawdown, theis recovery, and hantush modified theis for partial penetration. A fundamental assumption when analyzing a pumping test is that the water level measured represents the water level in the aquifer. Abstract this report describes the theory and field procedures for determining the trans missibility and storage coefficients and the original hydrostatic head of each. Make aqtesolv your choice for pumping test analysis software to get a complete package for constantand variablerate pumping tests, recovery tests, sinusoidal tests, singlewell tests, stepdrawdown tests, tests with multiple pumping wells, automatic image well generation, predictive simulation and pumping test design, and more. An aquifer test or a pumping test is conducted to evaluate an aquifer by stimulating the aquifer through constant pumping, and observing the aquifers response in observation wells. Constantdrawdown test procedures when conducting a constantdrawdown test, the operator holds the pumping water level constant at a preselected depth while precisely measuring flow rate changes and plotting these versus time. Therefore, major changes in pumping rate must not occur as part of a 72hour constant rate.
It is most often used to obtain aquifer properties such as transmissivity and storativity as well as specific capacity of. The distance drawdown graphs provides quantitative estimates of aquifer transmissivity, radius of influence of the pumping test, and a visual indication of horizontal anisotropy in the aquifer. Compare pumping test solutions in the pro and standard versions constant rate pumping tests. This webinar discusses stepdrawdown and constantrate pumping tests. A constantrate pumping test is performed by pumping the well at a constant rate for the duration of the test. Looking for an easytouse yet powerful pumping and slug test data analysis and reporting software. Aquifer pumping tests are a key element to site characterization, water resources assessment and remediation system design. Infinite extent aquifer pump test analysis software. If the pumping rate was not constantif the pumping rate was not constant throughout the pumping test, recoverythroughout the pumping test, recovery test data are more reliable than drawdowntest data are more reliable than drawdown data because the water table recovers at adata because the water table recovers at a constant nstant rate. Aug 26, 2016 as you pump the water out, keep track of how much water is pumped out per minute and in total and note down how much the level of the water in the well has fallen at regular intervals. Aquifer pumping test guidelines waikato regional council. You can customize a program to record water levels before, during, and after the pumping test baseline, pumping, and aquifer recovery. Even if dataloggers are utilized for water level measurement, the test site should never be left unattended for long.
Pumping test procedures for water withdrawal permit applications. Discharge variations are often as high as 50 percent. Regardless of the types of oilers in your plant, youre counting on them to maintain. Recovery data can be used if pumping rate varied considerably during the test. Scheduled sampling sets the rates at which the water level data is collected for a number of separate intervals, allowing the typical logarithmicstyle sampling schedule to be set. The most common form of pumping test is the constant rate pumping test in which a control well is pumped at a constant rate and water level response is measured in one or more surrounding observation wells and optionally in the control well itself the goal of a constant rate pumping test is to estimate. The most common form of pumping test is the constantrate pumping test in which a control well is pumped at a constant rate and waterlevel response. If the pumping rate was not constant throughout the pumping test, recovery test data are more reliable than drawdown data because the water table recovers at a constant rate. A pumping test consists of pumping groundw ater from a well, usually at a constant rate, and measuring water levels in the pumped well and any nearby wells observation wells or surface water. In previous reports, vertically distributed waterlevel and hydrochemical data obtained over.
Typical well configuration for pumping test in nonleaky confined aquifer. Knowledge of the hydrogeologic conditions of the area is necessary to ensure the use of appropriate. Part one begins the series with introducing the conceptual design elements of aquifer pumping tests. The output of the program can be transferred to a spreadsheet andor other software for graphing and any additional analysis needed. This is caused by the balancing of aquifer inflows such as recharge with aquifer outflows including the water removed during test pumping and referred to by hydrogeologists as the steadystate condition 3mx.
When pumping is stopped, the recovery of the lowered groundwater levels back toward their original levels is monitored. Software such as aqtesolv can account for variable pumping rates. The pump test usually has a duration of 2 to 12 hours with periodic water level and discharge measurements. Radius of influence calculator, steadystate drawdown calculator, and well yield calculator. Infinite extent supports distancedrawdown graphs for up to five observation wells. Also referred to as a variablerate test, the stepdrawdown test is one of the most useful assessment tools. Determination of aquifer hydraulic parameters from pumping.
Aquiferwin32 is a globally recognize software tool designed to get you answers fast. Test conducted at a constant 50 gpm constant pumping rate more data collection intervals than required water level stabilized for six hours before end of test water level returned to swl incorrect data collection intervals. Free pumping test programme university of the free state. Jun 10, 2015 if the pumping rate was not constantif the pumping rate was not constant throughout the pumping test, recoverythroughout the pumping test, recovery test data are more reliable than drawdowntest data are more reliable than drawdown data because the water table recovers at adata because the water table recovers at a constant rate. Software for pumping test analysis by hydrosolve, inc. Imaginary recharge occurs at an identical rate to the constant discharge during the pumping test. Aquifer testing is a common tool that hydrogeologists use to characterize a system of aquifers, aquitards and flow system boundaries a slug test is a variation on the typical aquifer test where an. The usgs has published software for analysis of aquifer test and slug test data. Suggested operating procedures for aquifer pumping tests. Constantrate pumping tests aquifer testing 101 aqtesolv. Aquifertest professional free version download for pc. Conducting pumping tests and improving results youtube. Aqtesolv is the original, allinone software package for the analysis of pumping tests, slug tests and constanthead tests standard and pro versions.
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