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Newsletter and Technical Publications
<Planning and Management of Lakes and
Reservoirs: An Integrated Approach to Eutrophication>
CHAPTER 3. POLICY, INSTITUTIONAL, AND REGULATORY FRAMEWORK
3.3. Basic Principles
3.3.2. The Watershed Approach
Water resources have been traditionally managed by the users with
sectoral, compartmental and non integrated approach. Water for power
generation, irrigation, industrial water supply, and domestic use was
considered as a resource for that use in isolated and non articulated
actions, with non coordinated interactions producing conflicts at
international, national, and local levels. The consequence of this
sectoral approach was the aggravation of water scarcity, increasing
degradation of water quality and consequences in the quality of life, and
life expectancy in many countries. The changes in the approach were driven
by the need to integrate management actions and to consider the goods and
services provided by water as a multi-sector, interdisciplinary and
cross-sector process. The basic unit for management is the watershed.
The aquatic ecosystem is a complex one, and to establish environmentally
sound management of water resources directed to prevent and control
eutrophication which promotes and therefore enhances sustainable
development, it is necessary to integrate several new approaches and
principles that advance the concepts.
The first concept is to integrate biogeophysical, social and
economic issues, considering several aspects of the availability and
uses of water resources. In this concept, the economic aspects related to
water quality and the social impacts of its degradation and loss of
quality are being considered. The second important concept is the
watershed approach that has the following main advantages:
- The watershed is a physical unit with a clear boundary.
- It is a hydrologically integrated ecosystem with interactive
compounds and subsystems.
- It provides an opportunity for development of partnerships.
- It enhances local community participation in the decision process.
- It stimulates general public participation and environmental
education.
- It provides an adequate systemic overview for training in Water
Resources Management and eutrophication control (managers,
decision-makers and technicians).
- It is a better approach to organize databases.
- It provides alternatives for the use of watersheds and its resources.
- It provides conditions for integration of scientific data and
databases with management.
- Being a physical unit with a clear boundary, the watershed provides a
basis for institutional integration.
- The watershed approach promotes the integration of scientists,
managers, decision- makers, and the general public that will work
together in a physical unit with a defined boundary.
The watershed concept applied to water management extends the scope of
environmental planning and management beyond the traditional political
barriers or decisions that are still present in many countries. Planning
and management will be carried out by an institutional organization that
integrates water management, social, and economic development, within a
physical unit. A physical unit such as a watershed, will facilitate the
development of scenarios, which are a useful qualitative and quantitative
tool for management. Thus, the capacity of prediction to some
extent, based on the existing information, the integration of the social
and economic issues, is another fundamental concept to be included in the
sound management practices of Water Resources Management, and
eutrophication control.
Another fundamental issue is to develop the capacity at the watershed
level to provide a set of indicators with the following objectives:
- Characterize the conditions (qualitative and quantitative) of the
watershed.
- Decentralize management actions.
- Provide the bases for dialogue and exchange of data between water
quality managers.
- Empower citizens to learn more about their watersheds.
Another fundamental concept is the integration of planning, management,
and operation, which will promote actions more effectively and provide
feedback mechanisms to the planning sector. The watershed provides also
the physical unit for a cross-sector approach to water quality and
quantity involving land use and industrial and agricultural development.
Linkages between water quality and quantity have to be better
established and the latest new developments consider these as basic to
advance water management and eutrophication control. Therefore it is
necessary to link, institutionally, the operation and management of water
quality and water quantity. As a consequence of these new concepts and
policies, the approaches to management also changed. The traditional
management policy at a local sectoral, responsive attitude is
giving place to an ecosystem, integrated and predictive
process implying deep changes in institutional organizations, regulatory
framework, and stimulating other approaches towards training of decision
makers and managers.
An example of national policy for water resources is given in Box 3.2
below.
Box 3.2 The Brazilian National Policy for Water
Resources
The National Water Resources Management Act
defined the National Water Resources Policy for Brazil and created the
National Water Resources Management System.
The National
Policy is based on six principles:
- Water is a public good.
- Water is a finite resource and it has an economic value.
- When scarce drinking water supply is the uppermost priority.
- Management must encompass multiple uses.
- The watershed is the territorial unit for management purposes.
- Water management shall be based on a participatory approach
involving government, users, citizens.
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