This book provides a critical evaluation of the theory and assumptions that underlie methods for estimating rates of groundwater recharge. Healy healy 2010, with contributions from bridget r. This page intentionally left blank estimating groundwater recharge understanding groundwater recharge is essential fo. Cook csiro land and water, private bag 2, glen osmond sa 5064, australia using groundwater levels to estimate recharge richard w. Minimum recharge refers to groundwater discharge to rivers or springs, when the two quantities are considered to be in balance.
It sets out to meet the needs of practising hydrogeologists by cataloging and explaining the various methods for estimating groundwater. Report of ministry of water resources, new delhi, india healy rw 2010 estimating groundwater recharge. Detailed explanations of the methods are provided allowing readers to apply many of the. In general, it is recommended to apply multiple methods and compare the results to each other healy and cook 2002. Understanding groundwater recharge is a prerequisite for the meaningful simulation of groundwater flow and transport, and, hence, successful management of renewable water resources. Estimation of groundwater recharge to the gulf coast.
You may need a pdf reader to view some of the files on this page. Scanlon is an excellent addition to the growing knowledge base of groundwater science and technology. Finch institute of hydrology, wallingford, oxon, ox10 8bb, uk. California groundwater sustainability plans will require maps of groundwater recharge areas and. Estimating groundwater recharge, by richard w healy cambridge university press, 2010 yongxin xu keywords book.
Sanders, book editor estimating groundwater recharge, by richard w. Understanding groundwater recharge is essential for successful management of water resources and modeling fluid and contaminant transport within the subsurface. Although several methods have been used to estimate the. Although relevant analytical solutions to various boussinesq equations bear, 1972 have been derived for this purpose su, 1994.
Healy, 9780521863964, available at book depository with free delivery worldwide. Using groundwater levels to estimate recharge request pdf. Rainfall is the principal means for replenishment of moisture in the soil water system and recharge to ground water. Estimates were obtained over two years november 2011october 20 using the water table fluctuation method and the white method, respectively.
Using groundwater levels to estimate recharge springerlink. Estimating groundwater recharge on the southern slope of. Estimates of groundwater recharge allow quantification of renewable groundwater resources and can be used to indicate aquifer vulnerability to contamination or drought, assess groundwater contribution to streams baseflow and wetlands, and identify the implications of changes to land use, land cover or climate misstear 2000. For example, if the ground water system is in a steady state condition the average discharge should equal the average recharge. Groundwater recharge estimation studies in a khondalitic. Results of the wtf method showed that recharge in the catchment was.
A comparison of four methods to estimate groundwater. Cambridge core geochemistry and environmental chemistry estimating groundwater recharge by richard w. Neel3 1department of plant and soil sciences, oklahoma state university 2oklahoma climatological survey, university of oklahoma 3oklahoma water resources board effective water resource management and planning. Recharge is a fundamental component of groundwater systems, and in groundwatermodeling exercises recharge is either measured and specified or estimated during model calibration. Groundwater recharge estimation methods might be categorized by hydrogeology provinces. Chemistry estimating groundwater recharge by richard w. You will be redirected to the full text document in the repository in a few seconds, if not click here.
Besides this conceptualization the objectives of the study, available data and. Introduction 2 techniques for estimating recharge based on groundwater level h l fluctuations are amongst the most commonly applied methods healy and cook, 2002. Estimating groundwater recharge understanding groundwater recharge is essential for the successful management of water resources and modeling. Estimating direct groundwater recharge using a simple. Scanlon et al summarized 70 studies of groundwater recharge which have applied of cmb methods in watersheds located across the globe.
It is important for evaluating the sustainability of groundwater supplies, though it does not equate with a sustainable rate of extraction. Healy us geological survey, ms 4, box 25046, denver federal center, lakewood, colorado 80225, usa email. Estimating groundwater recharge using the oklahoma mesonet. The mean annual recharge of alkhazir gomal basin was estimated as a basis for decision makers regarding the renewability and sustainability of groundwater. Where contamination of an aquifer is a concern, estimating the recharge rate is a first step toward predicting solute transport to the aquifer. The groundwater level fluctuating method gwlfm is commonly used to estimate the groundwater recharge in the aquifers healy, 2010. Healy us al gogcolsurei y ev l a k e wo o d c, ol o ra d o with contributions by bridget r. Many different approaches exist for estimating recharge.
Introduction groundwater gw recharge is defined as the fraction of total precipitation falling into a drainage basin, which eventually reaches the water table in the saturation zone of an aquifer juki c and juki c, 2004. It is termed minimum recharge because other losses e. As a result, it is useful to apply multiple methods to estimate groundwater recharge healy and cook 2002. The longterm mean daily streamflow records of alkhazir river 19691981 were used to estimate groundwater discharge by baseflow. Accurate estimation of groundwater recharge is extremely important for proper management of groundwater systems.
Estimating groundwater recharge pdf free download epdf. Aquifer recharge, deep percolation, and watertable. Estimating groundwater recharge and evapotranspiration. Three methods yielded different groundwater recharge rates. Estimating groundwater recharge using the oklahoma mesonet briana m. Summary of groundwaterrecharge estimates for pennsylvania. Pdf download estimating groundwater recharge ebook my. Recharge is typically estimated through indirect methods. Book climate drainage recharge base flow estimating groundwater recharge by richard w. Estimating groundwater recharge, by richard w healy cambridge.
This site describes the application, data needs, strengths, and weaknesses of widelyused methods for estimating groundwater recharge that have general applicability in humid regions of the u. Recharge was estimated on a monthly and annual basis using four methods1 unsaturatedzone drainage collected in gravity lysimeters, 2 daily water balance, 3 watertable fluc tuations. Estimating monetized benefits of groundwater recharge from stormwater retention practices pdf 74 pp, 3 mb, april 2016. Groundwater recharge, kushtia, precipitation, unconfined aquifer, water table fluctuation 1. Rick healy is a member of the unsaturated zone field studies project of the usgs national research program. Risser abstract groundwater recharge is water that infiltrates through the subsurface to the zone of saturation beneath the water table. Choosing appropriate techniques for quantifying groundwater. Estimating groundwater recharge estimating groundwater recharge west, anthony c. Estimating groundwater recharge in the semiarid alkhazir. The site is designed to be a quickreference or resource guide for selecting appropriate methods for estimating recharge in humid areas. Misstear, estimating groundwater recharge through tills. Knowledge of groundwater recharge is critical for assessment of water resources and determination of aquifer vulnerability to contamination. To evaluate potential hydrological impacts of changes in vegetation over a shallow sandy aquifer in subtropical australia, we estimated groundwater recharge and discharge by evapotranspiration et g under three vegetation covers.
Case histories of artificial recharge in india 36 75 annexure 1 format for preparation of artificial recharge project. Understanding groundwater recharge is a prerequisite for the. Summary of groundwaterrecharge estimates for pennsylvania by stuart o. His research addresses water, solute, and heat transport within the unsaturated zone. Estimating groundwater recharge and evapotranspiration from water.
It is difficult to directly measure the groundwater recharge lerner et al. Estimation of groundwater recharge using weiping chen. Estimating monetized benefits of groundwater recharge from stormwater retention practices prepared for united states environmental protection agency. Because recharge is a difficult parameter to quantify, it is. Groundwater resources program comparison of methods. This is a pdf file of an unedited manuscript that has been accepted for. Estimating direct groundwater recharge using a simple water balance model sensitivity to land surface parameters j. Methodology for estimating recharge from time series of groundwater levels 15 the following methodology is proposed for estimating groundwater recharge using data for a given observation well. Mau and winter 1997 have provided the instantaneous recharge method and the constant recharge method of hydrograph analysis to estimate recharge. Most of the discussion is devoted to the use of fluctuations in groundwater levels over time to estimate recharge. If retrofitting or increased retention were to occur, the groundwater benefits would be even more significant. Recharge is one of the most important components in groundwater studies, yet is also one of the least understood. Aquifer recharge john r nimmo 1, richard w healy2 and david a stonestrom 1united states geological survey, menlo park, ca, us 2united states geological survey, denver, co, us aquifer recharge is important both for hydrologic understanding and for effective water resource management. The watertable fluctuation method may be the most widely used technique for estimating recharge.
If the geology were such that all recharge to an area must discharge to a stream then a baseflow analysis of the streamflow hydrograph could determine total. Estimating groundwater recharge for hanoi, vietnam. Spatiotemporal variation of groundwater recharge in response to variability in precipitation, land use and soil in yanqing basin, beijing, china. When estimating groundwater recharge it is essential to proceed from a good conceptualization of different recharge mechanisms and their importance in the study area. Guide on artificial recharge central ground water board. This data set provides an estimate of annual groundwater recharge for each public land survey section in michigan. Estimating monetized benefits of groundwater recharge from. Problems associated with estimating ground water discharge. Cambridge university press, cambridge healy rw, cook pg 2002 using groundwater levels to estimate recharge. Estimating groundwater recharge usgs publications warehouse. Techniques for estimating recharge can be categorized as physical, chemical, and modeling techniques, and according to the source of data, including surface water, unsaturated zone, and groundwater scanlon et al. Estimation of recharge, by whatever method, are normally subject to large uncertainties and errors. He specializes in groundwater recharge and simulation of flow and transport in the unsaturated zone. Nonpoint source control branch 4503t 1200 pennsylvania avenue, nw.
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