Sustainable Management of Groundwater in Mexico Proceedings of a Workshop (2007) / Chapter Skim
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The Importance of Monitoring To Groundwater Management
The Importance of Monitoring To Groundwater Management
Pages 76-85
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From page 76... ...
This paper illustrates the value of long-term monitoring as described above through four case studies that highlight the broad applicability of monitoring data to water-resource issues. The discussion focuses on regional monitoring of groundwater levels and groundwater quality.
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From page 77... ...
Water levels are measured in the spring prior to the start of the irrigation season to provide consistency across the region. Information gathered in this multi-State cooperative effort reveals information that is important to decision-makers, such as how changes in water stored in the aquifer vary from place to place depending on: 1)
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From page 78... ...
Figure 1 Water-level changes in the High Plains aquifer from predevelopment to 2000 (Modified from McGuire and et al, 2003)
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From page 79... ...
The results of long-term monitoring of nitrate have spurred considerable public interest in restoration and protection of the springs (Florida Springs Task Force, 2000) and in scientific investigations using a variety of techniques including geochemical tracers, age-dating, nitrogen isotopes, and reconstructions of fertilizer application rates to understand the sources of nitrate and their transport processes and timescales (Katz et al., 2001)
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From page 80... ...
. Because of the continued potential threat of degradation of the freshwater parts of the aquifers, groundwater withdrawals are now carefully monitored and regulated by the New Jersey Department of Environmental Protection (NJDEP)
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From page 81... ...
Drought monitoring in Pennsylvania provides an example of the use of real-time monitoring that builds on a long-term data collection network to place current water levels in a long-term climatic context. This baseline understanding of climatic effects and frequent measurement can enable timely drought warnings and declarations and facilitate the adoption of mitigation techniques.
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From page 82... ...
Timeframe of Measurements -- Initial data collected for an aquifer provide critical baseline information. Monitoring data collected over one or more decades are required to compile a hydrologic record that encompasses the potential range of aquifer conditions 82
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From page 83... ...
technology to visually depict the locations of monitoring sites relative to pertinent geographic, geologic, or hydrologic features. The availability of electronic information transfer on the Internet greatly enhances the capability for rapid retrieval and transmittal of monitoring data to potential users.
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From page 84... ...
Furthermore, enhanced understanding of the groundwater-flow system and data limitations identified by calibrating groundwater models provide insights into the most critical needs for collection of future data. These aspects suggest an ongoing, iterative process of data collection, application of models or other interpretive techniques, and fine-tuning of monitoring programs over time.
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From page 85... ...
Geological Survey Circular 1243, Also available on the World Wide Web at http://pubs.water.usgs.gov/circ1243 Schaefer, F.L., and Walker, R.L.
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