Download or read book Hydrogeologic Geophysical Water quality Transient tracer and Flow model Analysis of the Ground water Flow System Near Dillon Montana written by and published by . This book was released on 1999 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water resources Investigations Report written by and published by . This book was released on 1999 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Publications of the U S Geological Survey written by and published by . This book was released on 2000 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Publications of the Geological Survey written by Geological Survey (U.S.) and published by . This book was released on 2001 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1999 with total page 1152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1999 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Publications of the Geological Survey written by Geological Survey (U.S.). and published by . This book was released on 1991 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guidelines for Evaluating Ground water Flow Models written by Thomas E. Reilly and published by DIANE Publishing. This book was released on 2004 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Groundwater Recharge and Flow written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2020-01-17 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water of appropriate quantity and quality is essential for drinking, sanitation, and food, energy, and industrial production for any society and is derived for most needs from surface- or groundwater sources. Studies suggest that groundwater use in irrigation globally is increasing in total volume as well as a percentage of all water used for irrigation, with the demand for groundwater resources increasing as available primary surface water supplies are depleted. Particularly in arid regions, groundwater may be the most accessible water supply for any purpose, leaving groundwater withdrawals concentrated in areas that are already experiencing water stress. Even in the presence of direct ground observations and measurements of the water table, quantitative evaluation of groundwater storage, flow, or recharge at different scales requires remotely sensed data and observations applied to groundwater models. Resolving the interaction of groundwater storage, flow, and recharge at a scale at which basins are managed requires remotely sensed data and proxy data. In June 2019, the Water Science and Technology Board of the National Academies of Sciences, Engineering, and Medicine convened a workshop to identify scientific and technological research frontiers in monitoring and modeling groundwater recharge and flow in various regions of the world. The goals of the workshop were to assess regional freshwater budgets under major use scenarios, including agriculture, industry, and municipal; examine state of the art research frontiers in characterizing groundwater aquifers, including residence time, quantity, flow, depletion, and recharge, using remotely sensed observations and proxy data; discuss groundwater model uncertainties and methods for mitigating them using sparse ground observations or data and other approaches; and consider our ability to detect which water management strategies that affect groundwater flow and recharge are being used and any changes in their use over time. This publication summarizes workshop presentations and plenary discussions.

Download or read book Groundwater Flow Understanding written by J. Joel Carrillo Rivera and published by CRC Press. This book was released on 2007-10-30 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Any sustainable groundwater development programme requires knowledge of the prevailing flow system, extending from local to regional scale. This book of selected papers discusses integral groundwater management with scale flow issues and presents methods of defining, preventing, controlling and mitigating negative environmental impacts related to groundwater. It highlights specific issues such as trans-boundary groundwater flow, groundwater recharge, groundwater mining, and groundwater flow in thick aquifers, and stresses the importance of the sustainable development of groundwater and its social and economic implications. The book will interest groundwater researchers and professionals, students, government administrators and educators, providing new insights into the procedures and processes that are influenced by the scale of the groundwater flow system.

Download or read book Use of a Ground water Flow Model with Particle Tracking to Evaluate Ground water Vulnerability Clark County Washington written by Daniel T. Snyder and published by . This book was released on 1996 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book System and Boundary Conceptualization in Ground water Flow Simulation written by Thomas E. Reilly and published by . This book was released on 2001 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Simulation of Ground water Flow Surface water Flow and a Deep Sewer Tunnel System in the Menomonee Valley Milwaukee Wisconsin written by and published by DIANE Publishing. This book was released on 2004 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Simulated Hydrologic Responses of the Quashnet River Stream aquifer System to Proposed Ground water Withdrawals Cape Cod Massachusetts written by Paul M. Barlow and published by . This book was released on 1993 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: ... The purposes of this report are to describe (1) the hydrologic characteristics of the Quashnet River stream aquifer system and (2) the responses of the system to proposed ground water withdrawals simulated by use of a numerical model of ground water flow; these reponses to pumping are assessed in terms of drawdowns in the altitude of the water table, streamflow depletions, and sources of water to the river and the simulated supply well; in this report, the Quashnet river stream aquifer system is defined as that area extending approximately from the Mashpee River on the east to the Coonamessett River on the west and from Nantucket Sound to approximately 1 mile north of Johns Pond; this report is based on ground and surface water data collected during the study and compiled from engineers' reports and USGS ground and surface water data bases; physical characteristics of the Quashnet and Childs Rivers (streamflow, stream velocity, width and depth), surface altitude of Johns Pond, and hydraulic heads within the basin were measured from January 1990 through September 1991 ...

Download or read book Water resources Investigations Report written by and published by . This book was released on 1987 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Water Quality Model for a Conjunctive Surface groundwater System written by Armando I. Perez and published by . This book was released on 1974 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Characterizing Groundwater Recharge written by J. Moran and published by IWA Publishing. This book was released on 2004-01-01 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the project was to demonstrate the value of age-dating and isotopic tracers in characterizing the flow dynamics and water quality changes in a complex groundwater domain that includes high capacity municipal pumping wells, a geologic fault, and artificial recharge facilities with deep lake-like recharge ponds. Characterizing water quality changes during recharge and transport in groundwater was also an objective of this investigation. Below (west of) the Hayward Fault (BHF), water ages correlated well with aquifer layer sequence. BHF tracers did not reach the BHF wellfield within the time frame of the experiment. Above (east of) the fault, (AHF) tracers reached the targeted wellfield in only 60 days, indicating substantial heterogeneity and a fast travel time along preferential pathways compared to the average travel time of 2+ years indicated by age-dating and more classical estimating methods. A reconnaissance of water quality, conducted concurrently with the tracer studies, suggested certain water quality improvements occurring in either the pond sediment or the near-pond aquifer media. Variations in groundwater age depended on location and depth. A survey of natural isotopes indicated mixing of young and older water in wells, increasing age with depth of aquifer layer, and possible dissolution of carbonate minerals. AHF tracer experiments, along with other analysis, suggested that tracers probably percolated preferentially at shallow depths in the pond near the shoreline. Much of the tracer remained in deep pond water over time, increasing residence time in down-gradient wells. The tracer studies provided evidence of preferential pathways and heterogeneity in the AHF aquifer and a fast minimum travel time to the AHF wellfield. The tracer added to BHF ponds was detected in just two monitoring wells, but not at the BHF wellfield over the 10-month period. An AHF tracer from a small pond spanning the fault did, however, appear at the BHF wellfield. BHF pond water flows mainly to distal portions of the groundwater basin, or reaches the wellfield over a slow, circuitous route. Originally published by AwwaRF for its subscribers in 2003 This publication can also be purchased and downloaded via Pay Per View on Water Intelligence Online - click on the Pay Per View icon below