Podcast
Questions and Answers
One of the primary functions of a watershed is to capture rainwater for storage above ground.
One of the primary functions of a watershed is to capture rainwater for storage above ground.
False
97% of global water is freshwater.
97% of global water is freshwater.
False
The manager's primary tasks include ensuring that changes in the watershed have serious impacts on soil, water, and biodiversity.
The manager's primary tasks include ensuring that changes in the watershed have serious impacts on soil, water, and biodiversity.
False
Watershed ecosystems are not interconnected and changes in one ecosystem do not affect others.
Watershed ecosystems are not interconnected and changes in one ecosystem do not affect others.
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Human activities have no impact on natural processes within watersheds.
Human activities have no impact on natural processes within watersheds.
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Goods such as food, fiber, and fuel are considered cultural services provided by watershed ecosystems.
Goods such as food, fiber, and fuel are considered cultural services provided by watershed ecosystems.
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Watershed management involves regulating and controlling the use of land, water, and other watershed resources without applying science and technology.
Watershed management involves regulating and controlling the use of land, water, and other watershed resources without applying science and technology.
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One of the goals of watershed management is to maximize adverse impacts on soil, water, and biodiversity.
One of the goals of watershed management is to maximize adverse impacts on soil, water, and biodiversity.
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Watershed management aims to meet the development goals of only one concerned sector.
Watershed management aims to meet the development goals of only one concerned sector.
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One of the applications of watershed management is to regulate and control the use of land, but not water.
One of the applications of watershed management is to regulate and control the use of land, but not water.
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Study Notes
Watershed Management Objectives and Practices
- Eradicate pervasive poverty
- Improve conservation of soil, water, and other natural resources including biodiversity
- Promote more equitable sharing of benefits and costs
- Promote active involvement of local communities and other key stakeholders
- Facilitate development of mutually beneficial arrangements among stakeholders
- Promote an orderly and less damaging use of land and other natural resources
- Set in place institutional mechanisms that will guarantee sustainability of watershed management projects
Dealing with Realities of Watershed Management
- Multiple demands on watersheds
- Multiple land uses and users
- Multiple LGUs having jurisdiction over parts of a watershed
- Multiple ecosystems that are sensitive to human activities
Watershed Functions and Uses
- Watersheds have multiple functions and uses
- Rare to find a watershed that is withdrawn from other uses due to limited land resources and growing population
- Managers task is to regulate use of watershed, not prohibit it, to ensure sustainability of soil, water, biodiversity, and ecosystem services
Watershed Management Practices
Watershed Characterization
- Process of describing watershed features using qualitative and quantitative methods
- Main goal is to understand why the watershed is behaving in a certain way
- Outputs are bases for designing solutions to address problems, designing development interventions, and monitoring and evaluation systems
Definition of Terms and Basic Concepts
Watershed
- Topographically delineated area drained by a river system with a single outlet
- Natural landscape with natural boundaries
- Main function is to capture rainwater ideally for storage underground
- Rainwater that is not stored is drained by streams through one outlet draining to a larger watershed or to a lake, wetland, or sea
Watershed Boundary
- Topographic boundary or barrier such as a ridge, hill or mountain, known as a divide
- Determines the portion of rainwater going to adjacent watersheds
Streams in Watersheds
- A watershed is made up of a stream network with one mainstream
- All streams from all subwatersheds flow into the mainstream that carries all water to the outlet
- Ephemeral streams have water only when it rains
- Intermittent streams have water only during rainy or wet season
- Perennial streams have water all year round
Subwatersheds
- A watershed is made up of many smaller watersheds called subwatersheds
- A subwatershed drains its water to the larger watershed
- The smallest subwatershed is one that has only one unbranched stream, called a First Order Stream
Micro Catchments to River Basins
- Micro catchment: <1,000 ha
- Small watershed: 1,000 ha to 10,000 ha
- Medium watershed: 10,000 ha to 50,000 ha
- Large watershed: 50,000 ha to 100,000 ha
- River basin: >100,000 ha
Importance of Watersheds
- Capture rainwater for storage underground
- Provide ecosystem services
- Interconnectivities of ecosystems in a watershed
- Change in one ecosystem triggers changes in other ecosystems
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Description
This quiz covers the various objectives and practices related to watershed management, including eradicating poverty, conserving natural resources, promoting equitable sharing of benefits, involving local communities and stakeholders, and developing mutually beneficial arrangements.
