Canadian framework for collaboration on groundwater

Rivera, Alfonso; Crowe, Allan S.; Kohut, A P; Rudolph, David L.; Baker, Claud H.; Pupek, Darryl; Shaheen, Nuzba; Lewis, M; Parks, Kevin P.

doi:10.4095/214620

Cited by 7 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, the United Kingdom, Canada, and Australia have national water‐quality monitoring programs. The Canadian and Australian programs rely on regional water authorities to design their region's programs; the national program then compiles and interprets the regional data on a national scale (e.g., Rivera et al, 2003). The British Geological Survey operates a program called “Baseline,” which is designed to establish the current natural condition of British aquifers so that future changes can be compared to these assessments.…”

Section: Comparison Of Ground‐water Trend Designsmentioning

confidence: 99%

Introduction to the U.S. Geological Survey National Water‐Quality Assessment (NAWQA) of Ground‐Water Quality Trends and Comparison to Other National Programs

Rosen

Lapham²

2008

J of Env Quality

View full text Add to dashboard Cite

Assessment of temporal trends in national ground-water quality networks are rarely published in scientific journals. This is partly due to the fact that long-term data from these types of networks are uncommon and because many national monitoring networks are not driven by hypotheses that can be easily incorporated into scientific research. The U.S. Geological Survey (USGS) National Water-Quality Assessment Program (NAWQA) since 1991 has to date (2006) concentrated on occurrence of contaminants because sufficient data for trend analysis is only just becoming available. This paper introduces the first set of trend assessments from NAWQA and provides an assessment of the success of the program. On a national scale, nitrate concentrations in ground water have generally increased from 1988 to 2004, but trends in pesticide concentrations are less apparent. Regionally, the studies showed high nitrate concentrations and frequent pesticide detections are linked to agricultural use of fertilizers and pesticides. Most of these areas showed increases in nitrate concentration within the last decade, and these increases are associated with oxic-geochemical conditions and well-drained soils. The current NAWQA plan for collecting data to define trends needs to be constantly reevaluated to determine if the approach fulfills the expected outcome. To assist this evaluation, a comparison of NAWQA to other national ground-water quality programs was undertaken. The design and spatial extent of each national program depend on many factors, including current and long-term budgets, purpose of the program, size of the country, and diversity of aquifer types. Comparison of NAWQA to nine other national programs shows a great diversity in program designs, but indicates that different approaches can achieve similar and equally important goals.

show abstract

Section: Comparison Of Ground‐water Trend Designsmentioning

confidence: 99%

Introduction to the U.S. Geological Survey National Water‐Quality Assessment (NAWQA) of Ground‐Water Quality Trends and Comparison to Other National Programs

Rosen

Lapham²

2008

J of Env Quality

View full text Add to dashboard Cite

show abstract

“…The assessment of the groundwater resources, at regional and national scales, is crucial for their effective management. Indeed, increasing demands and costs to secure clean water and its decreasing availability in some areas have important social and economic consequences (Rivera et al 2003). This work is part of several studies carried out to characterize main aquifer systems and to address regional groundwater issues in Canada (Rivard et al 2007(Rivard et al , 2008Grasby et al 2005;Côté et al 2006;Sharpe et al 2002;Kennedy and Woodbury 2003;Nastev et al 2006;Fagnan et al 1999).…”

Section: Introductionmentioning

confidence: 99%

Characterization of a Regional Aquifer System in the Maritimes Basin, Eastern Canada

Rivard

Michaud

Lefebvre

et al. 2008

Water Resour Manage

View full text Add to dashboard Cite

A regional hydrogeological study was carried out in the Maritimes provinces, in one of the main aquifer systems in Canada. The study area covers a land surface of 10,500 km 2 , of which 9,400 km 2 is over Carboniferous and younger rocks. The sedimentary fractured bedrock is composed of a sequence of discontinuous strata of highly variable hydraulic properties, and is overlain by a thin layer of glacial till (mostly 4 to 8 m). Depending on areas, 46 to 100% of the population relies on groundwater for water supply. Almost all residential wells are shallow (28 m on average) open holes that are cased only through the surficial sediments. This paper describes a regional hydrogeological investigation based on targeted fieldwork, the integration of a wide variety of existing multisource datasets and groundwater flow numerical modelling. The aim of this paper is to present the current state of understanding of the aquifer system in a representative area of the Maritimes Basin, along with the methodology used to characterize and analyze its distinct behaviour at the regional, local and point scales. This regional hydrogeological system contains confined and unconfined zones, and its aquifer lenticular strata extend only a few kilometers. Preferential groundwater recharge occurs where sandy tills are present. The estimated mean annual recharge rate to the bedrock aquifers ranges between 130 and 165 mm/year. Several geological formations of this Basin provide good aquifers, with hydraulic conductivity in the range of 5×10 −6 to 10 −4 m/s. Based on numerical flow modelling, faults were interpreted to play a key role in the regional flow. Pumping test results revealed that the aquifers can locally be very heterogeneous and anisotropic, but behave similarly to porous media. Work performed at the local scale indicated that most water-producing fractures generally have a sub-horizontal dip along a north-east (45°) strike.

show abstract

“…It is abundantly clear that single agencies cannot address all the related challenges, and that intergovernmental cooperation is imperative (Rivera et al 2003;CCA 2009). As part of this realization, recent expert reviews have identified the need for a more consolidated approach to groundwater data access and management (Rivera et al 2003;CCA 2009). Such an approach is needed because Canadian groundwater data is difficult to find and obtain, and then hard to use.…”

Section: Introductionmentioning

confidence: 99%

GroundWater Markup Language (GWML) – enabling groundwater data interoperability in spatial data infrastructures

Boisvert

Brodaric

2011

Journal of Hydroinformatics

View full text Add to dashboard Cite

Increasing stress on global groundwater resources is leading to new approaches to the management and delivery of groundwater data. These approaches include the deployment of a Spatial Data Infrastructure (SDI) to enable online data interoperability amongst numerous and heterogeneous data sources. Often an important component of an SDI is a global domain schema, which serves as a central structure for the query and transport of data, but at present there does not exist a schema for groundwater data that is strongly compliant with SDI concepts, standards, and technologies. In this paper we present GroundWater Markup Language (GWML), a groundwater application of the Geography Markup Language (GML). GWML can be used in conjunction with a variety of web services to facilitate data interoperability in a SDI. We describe three common usage scenarios that motivate the design of GWML and a three-stage design methodology involving conceptual, logical and physical schemas. The resultant GWML has broad scope as demonstrated by its implementation in the Canadian Groundwater Information Network. Example uses include decision support in resource management, a scientific application for aquifer mapping, and a commercial application for drill site selection. These demonstrated uses suggest GWML can play a key role in emerging groundwater SDI.

show abstract

Canadian framework for collaboration on groundwater

Cited by 7 publications

References 0 publications

Introduction to the U.S. Geological Survey National Water‐Quality Assessment (NAWQA) of Ground‐Water Quality Trends and Comparison to Other National Programs

Introduction to the U.S. Geological Survey National Water‐Quality Assessment (NAWQA) of Ground‐Water Quality Trends and Comparison to Other National Programs

Characterization of a Regional Aquifer System in the Maritimes Basin, Eastern Canada

GroundWater Markup Language (GWML) – enabling groundwater data interoperability in spatial data infrastructures

Contact Info

Product

Resources

About